KR20250001175A - Skin component measurement system capable of 2d expansion of hyperspectral image using positional displacement and method thereof - Google Patents

Abstract

The present invention relates to a skin component measurement system capable of 2D expansion of a hyperspectral image using position displacement and a method therefor, and more specifically, to a skin component measurement device that moves along a skin surface by providing an examination position acquisition unit including a light-emitting unit and a light-receiving unit, thereby acquiring an examination position displacement, and quickly and accurately generating a 2D image based on 1D hyperspectral information detected after irradiating a linear light source on the skin surface, by using the system and method therefor capable of 2D expansion of a hyperspectral image using position displacement.

Description

{SKIN COMPONENT MEASUREMENT SYSTEM CAPABLE OF 2D EXPANSION OF HYPERSPECTRAL IMAGE USING POSITIONAL DISPLACEMENT AND METHOD THEREOF}

The present invention relates to a skin component measurement system capable of 2D expansion of a hyperspectral image using position displacement and a method therefor, and more specifically, to a skin component measurement system capable of 2D expansion of a hyperspectral image using position displacement and a method therefor, which comprises an examination position acquisition unit including a light-emitting unit and a light-receiving unit in a skin component measurement device that moves along a skin surface to acquire an examination position displacement, and which can quickly and accurately generate a 2D image based on 1D hyperspectral information detected after irradiating a linear light source on the skin surface.

Raman spectroscopy is a technique that uses inelastic or Raman scattering of monochromatic light. Traditionally, the monochromatic light source is a laser in the visible or near-infrared ("NIR") range. The energy of the scattered photons is shifted up or down in response to interactions with vibrational modes or excitations in the luminescent material, which change the wavelength of the photons. Thus, spectra from the scattered light can provide information about the scattering material.

In a conventional Raman spectrometer, light emitted from a light source is irradiated to a local area of a sample by a microscope objective lens, and the light incident on the local area interacts with the light that was incident to re-emit light that is different from the light that was incident. This re-emitted light passes through the microscope objective lens again and forms a focus at a pinhole placed in front of the spectrometer. Due to the pinhole, only the light in the focus area formed by the microscope objective lens passes through, and the light outside the focus area is blocked.

The light beam that reaches the spectrometer is separated into light of a certain wavelength using a grating. In this way, the Raman signal is mixed with the light beam re-emitted from the sample due to the interaction between the light beam incident on the sample and the sample. Since the Raman signal is a very weak signal, it is greatly affected by noise such as the surrounding light beam and the fluorescent light beam generated from the sample. There are methods for reducing the influence of this noise, such as using multiple gratings, but in these cases, the inspection time increases.

Meanwhile, hyperspectral imaging technology is a technology that simultaneously measures continuous light spectra for an image of a target object. Hyperspectral imaging technology can measure the light spectrum of each part of an object in a short period of time compared to conventional spot spectrometry.

Hyperspectral imaging technology has various applications in which images are taken to measure the properties and characteristics of objects, since each pixel in the image contains spectral information. For example, hyperspectral imaging technology can be applied to analyze agricultural field conditions, mineral distribution, surface vegetation, and pollution levels by taking ground photographs from drones, satellites, and aircraft, and its application is also being considered in various fields such as food safety, skin/face analysis, and biological tissue analysis.

The optical absorption and scattering properties of biological tissues depend on both the chemical and structural properties of the tissue and the wavelength of light that interacts with it. Since it is often chemically or structurally specific to a tissue (the spectrum of the tissue), these absorption and scattering properties of tissue changes as a function of light can be particularly useful.

Hyperspectral image spectrum has high wavelength resolution and handles a wide range of wavelengths, and contains spatial spectral information from the material in the hyperspectral image. So each pixel contains all the continuous spectra that are used to identify the material in the pixel. In other words, the hyperspectral image is represented in three dimensions (x, y, z) consisting of two spatial dimensions and one spectral magnitude.

x and y represent the two spatial dimensions of the hyperspectral image, and z represents the magnitude of the spectrum.

The 2D detector collects spectral information for each pixel to form 3D data, which is spatial and spectral information of a hyperspectral image cube. In this way, while the human eye sees only three bands (RGB), the hyperspectral sensor creates a hyperspectral image and can obtain information even in areas that cannot be seen by the eye.

A hyperspectral sensor is disclosed in Korean Patent Publication No. [10-2021-0112566].

Korean registered patent [10-2424799] discloses a system and method for hyperspectral imaging measurement.

Korean Patent Publication No. [10-2022-0101344] discloses an optical measurement system based on hyperspectral imaging technology and a correction method for the optical measurement system.

Korean Patent Publication No. [10-2022-0114292] discloses an optical system capable of improving the spatial resolution of hyperspectral imaging and an optical alignment method using the same.

Korean Patent Publication No. [10-2021-0112566] (Publication Date: 2021. 09. 15) Korean Patent Registration [10-2424799] (Registration Date: 2022. 07. 20) Korean Patent Publication No. [10-2022-0101344] (Publication Date: 2022. 07. 19) Korean Patent Publication No. [10-2022-0114292] (Publication Date: 2022. 08. 17)

Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a skin component measuring device that obtains an examination position displacement by providing an examination position obtaining unit including a light emitting unit and a light receiving unit to move along a skin surface, and a skin component measuring system and method therefor capable of 2D expansion of a hyperspectral image using position displacement capable of quickly and accurately generating a 2D image based on the obtained examination position displacement after irradiating a linear light source on the skin surface and detecting 1D hyperspectral information.

The purposes of the embodiments of the present invention are not limited to the purposes mentioned above, and other purposes not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

According to one embodiment of the present invention for achieving the above-described purpose, a skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement comprises: a light source unit (20) for irradiating light having a single wavelength; a scattered light separation unit (10) for linearizing incident light applied from the light source unit (20), blocking reflected light for the incident light and light coming in from the outside, and outputting only scattered light; an inspection position acquisition unit (50) provided on one side a preset distance away from the scattered light separation unit (10) for detecting the amount of positional movement of an inspection area of an object (skin surface) and obtaining positional displacement; a hyperspectral detection unit (30) for detecting a spectrum signal of the scattered light applied from an exit of the scattered light separation unit (10) in a hyperspectral manner; It includes a control unit (40) for controlling the operation of the light source unit (20) and the hyperspectral detection unit (30), generating a 2D hyperspectral image based on the position displacement received from the inspection position acquisition unit (50) of the spectral signal of the scattered light, and analyzing the generated 2D hyperspectral image to analyze and measure skin components.

The above inspection position acquisition unit (50) is characterized by including a light emitting unit (51) that outputs light; an optical lens (52) for inducing and refracting light output from the light emitting unit (51) and applying it to a detection area; an optical sensor (53) for recognizing light reflected from the detection area; and a microprocessor (54) for detecting a current image through the optical sensor (53) and comparing it with a previous image to obtain a movement amount (Δx) in the X-axis direction and a movement amount (Δy) in the Y-axis direction.

In the above scattered light separation unit, it is characterized by including an incident light linearization unit (100) that converts incident light into linear light and outputs it; a scattered light detection unit (200) for detecting only scattered light after the linear light output through the incident light linearization unit is reflected in the inspection area of the object; a reflected light removal unit (300) for removing reflected light excluding scattered light after the linear light is reflected on the object; and a support unit (400) that is provided below the incident light linearization unit, the incident light linearization unit, the scattered light detection unit, and the reflected light removal unit and comes into contact with the object, and has a line-shaped hole (401) so that the linear light is applied to the inspection area of the object, and darkens the room so that no external light other than the linear light is applied to the inspection area of the object.

The above incident light linearization unit (100) is characterized by including: an inlet (101) in the form of a hole to which the incident light is applied on an upper surface; a first guide (102) having a shape in which the gap between a pair of facing surfaces, a first front surface (102a) and a first rear surface (102b), narrows from the top to the bottom, and the other pair of facing surfaces, a first left surface (102c) and a first right surface (102d), are parallel to each other to linearize the incident light and limit light applied from the outside; and a first slit (103) in the form of a line formed at a lower portion of the first guide (102) and outputting the linearized linear light passing through the first guide (102).

The above scattered light detection unit (200) is characterized by including a second slit (201) in the form of a line formed on a lower surface and to which only the scattered light is applied after the linear light output from the first slit (103) is reflected by the object; a second guide (202) that guides the scattered light applied through the second slit (201) and has a shape in which the gap between a pair of opposing surfaces, a second front surface (202a) and a second rear surface (202b), widens as it goes from the lower surface to the upper surface, and the other pair of opposing surfaces, a second left surface (202c) and a second right surface (202d), are parallel to each other to restrict light applied from the outside; and an outlet (203) formed on an upper surface of the second guide (202) and having a circular hole through which the scattered light is output.

The above-described reflection light removal unit (300) is characterized by including a third slit (301) in the form of a line formed on a lower surface, through which the linear light output from the first slit (103) is reflected by the object and then the reflected light is applied; and a third guide (302) through which the reflected light applied through the third slit (301) is guided, but has a shape in which the gap between a pair of facing surfaces, a third front surface (302a) and a third rear surface (302b), narrows as it goes from the bottom to the top so that they meet each other, and the remaining pair of facing surfaces, a third left surface (302c) and a third right surface (302d), are parallel to restrict light applied from the outside and allow the reflected light to converge and be converted into heat energy.

The above-described scattered light separation unit (10) is characterized in that it is formed of a metal material and that all surfaces are coated with a black oxide film, and the outside of the inspection position acquisition unit (50) is formed with a sealed structure except for the detection area so that light output from the light emitting unit (51) or light reflected from the detection area is not applied to the scattered light separation unit (10), and the inspection area of the object inspected through the scattered light separation unit (10) and the detection area detected through the inspection position acquisition unit (50) are provided apart from each other by the preset distance, and the amount of movement (Δx) of the detection area in the X-axis direction and the amount of movement (Δy) in the Y-axis direction are characterized in that they become the positional displacement of the inspection area of the object.

The above hyperspectral detection unit (30) is characterized by including a first lens (31) for receiving detection light output from the scattered light separation unit (10); a slit element (32) for extracting a necessary portion from the detection light passing through the first lens (31); a second lens (33) for receiving the detection light passing through the slit element (32); a spectral element (34) for spectrally dispersing the detection light passing through the second lens (330); a focusing lens (35) for focusing the spectrally dispersing the detection light; and a spectral signal generator (36) for generating a spectral signal for the detection light spectrally dispersing by the spectral element (34) passing through the focusing lens (35).

In addition, according to one embodiment of the present invention for achieving the above-described purpose, a skin component measurement method capable of 2D expansion of a hyperspectral image using position displacement comprises: a light irradiation step (S10) of irradiating light having a single wavelength into an entrance of a scattered light separation unit; an incident light linearization step (S20) of converting the irradiated incident light into linear light and outputting it; a scattered light detection step (S30) of detecting only scattered light through an exit of the scattered light separation unit after the linear light is reflected on an inspection area of an object (skin); a reflected light removal step (S40) of removing reflected light excluding the scattered light after the linear light is reflected on the inspection area of the object; an inspection position displacement acquisition step (S50) of acquiring position displacement for an inspection area of the object using an inspection position acquisition unit; a spectrum signal detection step (S60) of detecting spectrum signals of the scattered light applied from the exit of the scattered light separation unit in a hyperspectral manner; It includes a 2D hyperspectral image generation step (S70) for generating a 2D hyperspectral image based on the above spectrum signals and the displacement of the inspection area received from the inspection location acquisition unit; and a skin component measurement step (S80) for measuring skin components by analyzing the generated 2D hyperspectral image.

The above-described inspection position displacement acquisition step (S50) is characterized by including: a light emitting step for outputting light from a light emitting unit; an induction and refracting step for inducing and refracting the light output through the light emitting unit and applying it to a detection area of the object surface; a detection step for recognizing light reflected from the detection area; a step for detecting a current image of the detection area through the detection step and comparing it with a previous image to calculate a movement amount (Δx) in the X-axis direction and a movement amount (Δy) in the Y-axis direction; and a step for acquiring the movement amount (Δx) in the X-axis direction and the movement amount (Δy) in the Y-axis direction as the position displacement.

In addition, according to one embodiment of the present invention, a computer-readable recording medium storing a program for implementing a skin component measurement method capable of 2D expansion of a hyperspectral image using the positional displacement is provided.

In addition, according to one embodiment of the present invention, a program stored in a computer-readable recording medium is provided to implement a skin component measurement method capable of 2D expansion of a hyperspectral image using positional displacement.

According to a skin component measurement system and method for 2D expansion of a hyperspectral image using position displacement according to one embodiment of the present invention, an examination position acquisition unit including a light-emitting unit and a light-receiving unit is provided in a skin component measurement device moving along a skin surface, thereby obtaining an examination position displacement, and quickly and accurately generating 2D information based on 1D information of a hyperspectral image detected after irradiating a linear light source on the skin surface.

In addition, according to a skin component measurement system and method for 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention, it is possible to simply and easily detect Raman hyperspectral by using a scattered light separation unit having a structure that linearizes incident light, blocks reflected light and light coming from the outside, and detects only scattered light, instead of using complex or expensive components such as a conventional notch filter or splitter.

In addition, according to the skin component measurement system and method for 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention, the scattered light separation unit and the inspection position acquisition unit can be miniaturized, so there is an effect of miniaturizing a skin component measurement device using Raman hyperspectroscopy.

In addition, according to a skin component measurement system and method capable of 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention, Raman hyperspectral can be detected simply and easily and converted into 2D, so that chemical bonding components of skin tissue can be quickly measured, and changes in skin components can be identified, which can be effective in helping users with their healthcare.

FIG. 1 is a configuration diagram of a skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention.
Figure 2 is a configuration diagram of an embodiment of the inspection position acquisition unit of Figure 1.
FIGS. 3 and 4 are drawings for explaining a method for obtaining an inspection position in a skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention.
Fig. 5 is a perspective view of the scattered light separation unit of Fig. 1.
Fig. 6 is a cutaway perspective view of one side of the scattered light separation unit of Fig. 5.
Fig. 7 is a drawing for explaining the first guide of the incident light linearization section in the scattered light separation section of Fig. 5.
Fig. 8 is a drawing for explaining the second guide of the scattered light detection unit in the scattered light separation unit of Fig. 5.
Fig. 9 is a drawing for explaining the third guide of the reflection light removal unit in the scattered light separation unit of Fig. 5.
Fig. 10 is a drawing for explaining the support part in the scattered light separation part of Fig. 5.
Fig. 11 is a cross-sectional view of the scattered light separation part of Fig. 5.
Figure 12 is an enlarged view of area A` in Figure 11.
Figure 13 is a drawing for explaining a scattered light separation unit.
Figure 14 is an enlarged view of area B` in Figure 113.
Fig. 15 is a detailed configuration diagram of one embodiment of the hyperspectral detection unit of Fig. 1.
Figure 16 is a flow chart of one embodiment of a skin component measurement method capable of 2D expansion of a hyperspectral image using positional displacement according to the present invention.

The present invention can have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but there may also be other components present in between.

On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

The terminology used herein is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, process, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, processes, operations, components, parts or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common dictionaries, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and shall not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

Hereinafter, the present invention will be described in more detail with reference to the attached drawings. Prior to this, the terms or words used in this specification and claims should not be interpreted as limited to their conventional or dictionary meanings, and should be interpreted as meanings and concepts that conform to the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain his or her own invention in the best way. In addition, if there is no other definition for the technical and scientific terms used, they have the meanings commonly understood by those with ordinary knowledge in the technical field to which this invention belongs, and the description of well-known functions and configurations that may unnecessarily obscure the gist of the present invention in the following description and the attached drawings will be omitted. The drawings introduced below are provided as examples so that those skilled in the art can sufficiently convey the idea of the present invention. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other forms. In addition, the same reference numerals represent the same components throughout the specification. It should be noted that the same components in the drawings are represented by the same symbols wherever possible.

FIG. 1 is a configuration diagram of a skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention.

As illustrated in FIG. 1, a skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention includes a light source unit (20), a scattered light separation unit (10), an inspection position acquisition unit (50), a hyperspectral detection unit (30), and a control unit (40).

The above light source unit (20) irradiates light having a single wavelength. The wavelength of the light irradiated from the light source unit (20) can be controlled by the control unit (40).

The above-mentioned scattered light separation unit (10) linearizes the incident light applied from the light source unit (20), blocks the reflected light of the incident light and the light coming in from the outside, and outputs only the scattered light. The detailed configuration and shape of the above-mentioned scattered light separation unit (10) will be described in detail with reference to FIGS. 5 to 14.

The above inspection position acquisition unit (50) is provided on one side at a preset distance from the above scattered light separation unit (10) to detect the amount of position movement (position displacement) of the inspection area of the object (skin surface).

The above hyperspectral detection unit (30) detects the spectrum signals of the scattered light applied from the exit of the scattered light separation unit (10) in a hyperspectral manner.

The above control unit (40) controls the light source unit (20) and the hyperspectral detection unit (30), generates a 2D hyperspectral image based on the spectral signals received from the hyperspectral detection unit (30) and the positional displacement received from the inspection position acquisition unit (50), and analyzes the generated 2D hyperspectral image to analyze and measure skin components.

In addition, the skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention may further include a display unit (not shown) for outputting the 2D hyperspectral image generated by the control unit (40) and the image of the object (skin) on a screen.

Figure 2 is a configuration diagram of an embodiment of the inspection position acquisition unit of Figure 1.

As shown in Fig. 2, the inspection position acquisition unit (50) includes a light emitting unit (51), an optical lens (52), an optical sensor (53), and a microprocessor (54).

The above light emitting unit (51) includes a general LED or laser and outputs light.

The optical lens (52) induces and refracts the light output from the light emitting unit (51) and applies it to the detection area (55) detected by the optical sensor (53). The optical lens (52) may be, for example, a prism.

The above optical sensor (53) recognizes light reflected from the detection area (55).

The above microprocessor (54) detects the current image through the optical sensor (53), compares it with the previous image, obtains the amount of movement in the X-axis direction (Δx) and the amount of movement in the Y-axis direction (Δy), and transmits them to the control unit (40).

FIGS. 3 and 4 are drawings for explaining a method for obtaining an inspection position in a skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement according to one embodiment of the present invention.

In the above inspection position acquisition unit (50), the light emitting unit (LED) (51) outputs light, and when the light of the light emitting unit (LED) (51) is guided and refracted using the optical lens (52) and applied to the detection area (55), the optical sensor (light receiving unit) (53) recognizes the light reflected from the detection area (55), and the microprocessor (54) can obtain the movement amount of the skin measuring device (not shown) including the inspection position acquisition unit (50), i.e., the movement amount in the X-axis direction (Δx) and the movement amount in the Y-axis direction (Δy).

Since the above-mentioned scattered light separation unit (10) and the above-mentioned inspection position acquisition unit (50) use different light sources, they are installed at a preset distance apart from each other to prevent interference, and the entire surface of the above-mentioned scattered light separation unit (10) is coated with a black oxide film to prevent reflected light from the outside from being applied, and except for the scattered light output through the exit (203) of the above-mentioned scattered light separation unit (10), no other reflected light is output.

In addition, in the inspection position acquisition unit (50), the outside of the inspection position acquisition unit (50) is formed as a sealed structure except for the detection area (55) so that the light output from the light emitting unit (51) or the light reflected from the detection area (55) is not applied to the scattered light separation unit (10).

Referring to Fig. 4, the inspection area (scanned line) of the object inspected through the scattered light separation unit (10) and the detection area (55) detected through the inspection position acquisition unit (50) are separated by the preset distance.

That is, the amount of movement (Δx) in the X-axis direction and the amount of movement (Δy) in the Y-axis direction of the detection area (55) acquired by the inspection position acquisition unit (50) become the positional displacement of the inspection area of the object.

Therefore, by using a skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement according to the present invention, a 1D (DIMEMSION) image, which is a hyperspectral imaging technology, can be acquired at once, and the amount of movement in the X-axis direction and the Y-axis direction can be immediately known using the inspection position acquisition unit (50), so that a 2D spectrum can be generated at a high speed.

FIG. 5 is a perspective view of the scattered light separation unit of FIG. 1, FIG. 6 is a cut-away perspective view of one side of the scattered light separation unit of FIG. 5, FIG. 7 is a drawing for explaining a first guide of an incident light linearization unit in the scattered light separation unit of FIG. 5, FIG. 8 is a drawing for explaining a second guide of a scattered light detection unit in the scattered light separation unit of FIG. 5, FIG. 9 is a drawing for explaining a third guide of a reflected light removal unit in the scattered light separation unit of FIG. 5, FIG. 10 is a drawing for explaining a support unit in the scattered light separation unit of FIG. 5, FIG. 11 is a cross-sectional view of the scattered light separation unit of FIG. 5, FIG. 12 is an enlarged drawing of area A` in FIG. 11, FIG. 13 is a drawing for explaining the scattered light separation unit, and FIG. 14 is an enlarged drawing of area B` in FIG. 113.

As shown in Fig. 5, the scattered light separation unit (100) is completely blocked except for the inlet (101), the outlet (203), and the first to third slits. This is to prevent reflected light from being applied from the outside as much as possible.

As shown in FIGS. 5 to 14, the scattered light separation unit (10) includes an incident light linearization unit (100), a scattered light detection unit (200), a reflected light removal unit (300), and a support unit (400).

The above incident light linearization unit (100) converts the incident light into linear light and outputs it.

The above scattered light detection unit (200) detects and outputs only the scattered light after the linear light output through the incident light linearization unit (100) is reflected in the inspection area of the object (skin).

The above-mentioned reflection light removal unit (300) removes the reflected light excluding the scattered light after the linear light is reflected on the object.

The above support member (400) is provided below the incident light linearization member (100), the scattered light detection member (200), and the reflected light removal member (300) so as to come into contact with the object, and a line-shaped hole (401) is provided so that the linear light is applied to the inspection area of the object, and an area scanned through the line-shaped hole (401) is determined. In addition, the support member (400) is in close contact with the object (skin surface) so as to darken the inspection area so that no external light other than the linear light applied thereto is applied.

The above incident light linearization unit (100) includes a hole-shaped entrance (101) to which the incident light is applied on the upper surface, a first guide (102) having a shape in which the gap between a pair of surfaces facing each other, a first front surface (102a) and a first rear surface (102b), narrows as it goes from the top to the bottom, and the other pair of surfaces facing each other, a first left surface (102c) and a first right surface (102d), are parallel to each other to linearize the incident light and limit light applied from the outside, and a first slit (103) in the shape of a line formed at the lower portion of the first guide (102) and through which the linear light converted by passing through the first guide (102) is output.

The above scattered light detection unit (200) includes a second slit (201) in the form of a line formed on a lower surface and to which only the scattered light is applied after the linear light output from the first slit (103) is reflected by the object, a second guide (202) in which the scattered light applied through the second slit (201) is guided, but has a shape in which the gap formed by a pair of facing surfaces, a second front side (202a) and a second rear side (202b), widens as it goes from the bottom to the top, and the other pair of facing surfaces, a second left side (202c) and a second right side (202d), are parallel to each other to restrict light applied from the outside, and an outlet (203) formed on an upper portion of the second guide (202) and having a circular hole through which the scattered light is output.

The above-described reflection light removal unit (300) includes a third slit (301) formed on a lower surface, which is in the form of a line and to which the linear light output from the first slit (103) is reflected by the object and then the reflected light is applied, and a third guide (302) through which the reflected light applied through the third slit (301) is guided, but has a shape in which the gap between a third front side (302a) and a third rear side (302b), which are a pair of surfaces facing each other from the bottom to the top, narrows and meets each other, and the third left side (302c) and the third right side (302d), which are the remaining pair of surfaces facing each other, are parallel to restrict light applied from the outside and allow the reflected light to converge and be converted into heat energy.

Referring to FIG. 10, the support member (400) forms a fourth front side (401a), a fourth rear side (401b), a fourth left side (401c), and a fourth right side (401d) in all directions of the line-shaped hole (401), so that the incident light is applied to the object surface, but the reflected light applied from the outside of the scattered light separation member (10) is limited. That is, the support member (400) darkens the inspection area by closely contacting the object (skin surface) so that no external light other than the linear light applied is applied.

The incident light linearization unit (100), the scattered light detection unit (200), and the reflected light removal unit (300) are sequentially connected on the support unit (400).

That is, as illustrated in FIG. 5, the scattered light separation unit (10) according to the present invention comprises: the outer surfaces of the first left side (102c) of the first guide (102), the second left side (202c) of the second guide (202), the third left side (302c) of the third guide (302), and the fourth left side (402c) of the support member (400) connected to form one side; and the outer surfaces of the first right side (102d) of the first guide (102), the second right side (202d) of the second guide (202), the third right side (302d) of the third guide (302), and the fourth right side (402d) of the support member (400) connected to form another side that faces parallel to the one side.

Referring to FIGS. 10 and 11, the incident light linearization unit (100) has an angle formed by a first front surface (102a) and a first rear surface (102b), which are a pair of surfaces with a gap between them that narrows from top to bottom in the first guide (102), which becomes the incident angle range of the incident light.

That is, the incident light has an angular range from a first predetermined angle (α) formed between the bottom surface (object) and the inner surface of the first front surface (102a) to a second predetermined angle (β) formed between the bottom surface and the inner surface of the first back surface (102b). That is, the range a of the incident light is α ≤ a ≤ β.

The above scattered light detection unit (200) forms a third predetermined angle (θ) with the vertical line drawn from the center point of the exit (203) to the second slit (201), the inner surface of the second front surface (202a) and the inner surface of the second rear surface (202b), but has an angle range that allows only scattered light of the object generated by the incident light to be applied and prevents reflected light from being applied.

The reflected light for the above incident light is applied to the third guide (302) through the third slit (301) of the reflected light removing unit (300), and continues to be reflected through the third rear surface (302b) and the third front surface (302a), and eventually converges inside the third guide (302) and is converted into thermal energy.

The above-mentioned scattered light separation unit (10) is formed of a metal material such as aluminum (Al) and is coated with a black oxide film on all surfaces to block light applied from the outside and prevent reflected light from being applied as much as possible.

Fig. 15 is a detailed configuration diagram of one embodiment of the hyperspectral detection unit of Fig. 1.

As shown in Fig. 15, the hyperspectral detection unit (30) includes a first lens (31), a slit element (32), a second lens (33), a spectral element (34), a focusing lens (35), and a spectral signal generator (36).

The above first lens (31) receives the detection light (scattered light) output from the scattered light separation unit (10).

The above slit element (32) is used to extract a necessary portion from the detection light passing through the first lens (31). The detection light can be diverged by the slit element (32).

The second lens (33) receives the detection light passing through the slit element (32). The second lens (33) can adjust the detection light to be parallel light or convergent light. For example, the second lens (33) can be a collimating lens. The collimating lens can include a convex lens.

The above-mentioned spectral element (34) spectra the detection light passing through the second lens (33). The above-mentioned spectral element (34) may be formed mechanically or may be formed electrically as shown in Fig. 10. For example, the mechanically formed spectral element (34) may be a prism.

The above spectral element (34) can pass light of different wavelength bands. The above spectral element (34) can filter the detection light provided from the second lens (33) so that it has spatially different wavelengths. In other words, portions of the detection light that have passed through different regions of the spectral element (34) can have different wavelengths.

The above-described focusing lens (35) focuses the detection light that has been spectrally divided by the above-described spectral element (34). The spectrally divided detection light passes through the focusing lens (35) and is provided to the spectrum signal generator (36). For example, the focusing lens (35) may include a convex lens.

The above spectrum signal generator (36) generates (detects) a spectrum signal for the detection light that has been spectrally divided by the spectral element (34) that has passed through the collecting lens (35). The spectrum signal generator (35) provides the generated spectrum signal to the control unit (40).

The above control unit (40) can generate a 2D hyperspectral image of the object based on the spectrum signal received from the hyperspectral detection unit (30) and the displacement of the inspection area received from the inspection position acquisition unit (10). The 2D hyperspectral image of the object can quickly generate the spectral distribution information for each position of the object. In other words, the hyperspectral image of the object is a collection of spectral distributions for each position of the object.

For example, the control unit (40) can generate a 2D hyperspectral image of an object by removing an offset from each 1D hyperspectral image and summing the 1D hyperspectral images from which the offset has been removed based on the positional displacement. However, the method for generating a hyperspectral image in the present invention is not limited thereto, and a known hyperspectral image generating method may be used.

In addition, the control unit (40) can measure and analyze components of an object (skin) from a hyperspectral spectrum signal and a 2D hyperspectral image.

FIG. 16 is a flow chart of an embodiment of a skin component measurement method capable of 2D expansion of a hyperspectral image according to the present invention.

First, the light source unit (20) irradiates light having a single wavelength to the inlet (101) of the scattered light separation unit (10) (S10).

Thereafter, the incident light linearization unit (100) of the scattered light separation unit (10) converts the incident light being irradiated into linear light and outputs it (S20).

Thereafter, after the linear light is reflected in the inspection area of the object (skin), the scattered light detection unit (200) of the scattered light separation unit (10) detects only the scattered light and outputs it to the exit (203) (S30).

At the same time as the above-mentioned scattered light detection step (S30), after the linear light is reflected in the inspection area of the object, the reflected light excluding the scattered light is removed in the reflected light removal unit (300) of the scattered light separation unit (10) (S40).

Simultaneously with the above-mentioned scattered light detection step (S30), the inspection position acquisition unit (50) acquires the positional displacement of the inspection area using the light-emitting unit (51) and the optical sensor (53) (S50).

Thereafter, the hyperspectral detection unit (30) detects the spectrum signals of the scattered light applied from the outlet (203) of the scattered light separation unit (10) in a hyperspectral manner (S50).

Thereafter, the control unit (40) generates a 2D hyperspectral image based on the spectrum signals received from the hyperspectral detection unit (30) and the positional displacement of the inspection area received from the inspection position acquisition unit (50) (S60).

Thereafter, the control unit (40) analyzes the generated 2D hyperspectral image to measure skin components (S70).

The detailed steps of the above inspection position displacement acquisition step (S50) are as follows.

First, light is output from the light emitting unit (51).

Thereafter, the optical lens (52) guides and refracts the light output through the light emitting unit (51) and applies it to the detection area of the object surface.

Afterwards, the optical sensor (53) detects the light reflected from the detection area.

Thereafter, the microprocessor (54) detects the current image of the detection area through the optical sensor (53), compares it with the previous image, calculates the amount of movement (Δx) in the X-axis direction and the amount of movement (Δy) in the Y-axis direction, and obtains the amount of movement (Δx) in the X-axis direction and the amount of movement (Δy) in the Y-axis direction as the positional displacement.

Although the method for measuring skin components capable of 2D expansion of a hyperspectral image according to one embodiment of the present invention has been described above, it is also possible to implement a computer-readable recording medium storing a program for implementing the method for measuring skin components capable of 2D expansion of a hyperspectral image and a program stored in the computer-readable recording medium for implementing the method for measuring skin components capable of 2D expansion of a hyperspectral image.

That is, it will be easily understood by those skilled in the art that the skin component measurement method capable of 2D expansion of the hyperspectral image described above may be provided by being included in a recording medium that can be read by a computer, by tangibly implementing a program of commands for implementing it. In other words, it may be implemented in the form of a program command that can be executed by various computer means, and may be recorded on a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, etc., singly or in combination. The program commands recorded on the computer-readable recording medium may be those specially designed and configured for the present invention, or may be those known to and usable by those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specifically configured to store and execute program instructions such as ROMs, RAMs, flash memories, USB memories, and the like. Examples of the program instructions include not only machine language codes generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc. The hardware devices may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

The present invention is not limited to the above-described embodiments, and the scope of application is diverse, and various modifications can be implemented without departing from the gist of the present invention claimed in the claims.

10: Scattered light separation section 20: Light source section
30: Hyperspectral detection unit 40: Control unit
50: Acquire the inspection location
100: Incident light linearization section 200: Scattered light detection section
300: Reflection removal part 400: Support part
101: Entrance 102: Guide 1
102a: 1st front 102b: 1st rear
102c: 1st left side 102d: 1st right side
103: 1st slit
201: 2nd slit 202: 2nd guide
202a: 2nd front 202b: 2nd rear
202c: 2nd left side 202d: 2nd right side
203: Exit
301: 3rd slit 302: 3rd guide
302a: 3rd front 302b: 3rd rear
302c: 3rd left side 302d: 3rd right side
401: Line-shaped hole
402a: 4th front 402b: 4th rear
402c: 4th left side 402d: 4th right side
31: First lens 32: Slit element
33: Second lens 34; Spectroscopic element
35: Concentrator lens 36: Spectral signal generator
51: Light-emitting part (LED) 52: Optical lens
53: Optical sensor 54; Microprocessor
S10: Light irradiation stage
S20: Incident beam linearization stage
S30: Scattered light detection stage
S40: Reflection removal step
S50: Inspection position displacement acquisition step
S60: Spectrum signal detection stage
S70: 2D hyperspectral image generation stage
S80: Skin component measurement stage

Claims (10)

In a skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement,
A light source unit (20) for irradiating light having a single wavelength;
A scattered light separation unit (10) for linearizing the incident light applied from the light source unit (20), blocking the reflected light of the incident light and the light coming in from the outside, and outputting only the scattered light;
An inspection position acquisition unit (50) provided on one side at a preset distance from the above-mentioned scattered light separation unit (10) to detect the amount of positional movement in the inspection area of the object (skin surface) and acquire positional displacement;
A hyperspectral detection unit (30) for detecting the spectrum signal of the scattered light applied from the exit of the scattered light separation unit (10) in a hyperspectral manner;
A control unit (40) for controlling the operation of the light source unit (20) and the hyperspectral detection unit (30), generating a 2D hyperspectral image based on the position displacement received from the inspection position acquisition unit (50) of the spectral signal of the scattered light, and analyzing and measuring skin components by analyzing the generated 2D hyperspectral image.
A skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement including .
In the first paragraph,
The above inspection location acquisition unit (50) is
A light emitting part (51) that outputs light;
An optical lens (52) for inducing and refracting light output from the above light emitting unit (51) and applying it to the detection area;
An optical sensor (53) for recognizing light reflected from the above detection area; and
A microprocessor (54) for detecting the current image through the optical sensor (53) and comparing it with the previous image to obtain the amount of movement in the X-axis direction (Δx) and the amount of movement in the Y-axis direction (Δy)
A skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement, characterized by including:
In the first paragraph,
In the above scattered light separation section,
An incident light linearization unit (100) that converts incident light into linear light and outputs it;
A scattered light detection unit (200) for detecting only scattered light after linear light output through the above incident light linearization unit is reflected in the inspection area of the object;
A reflection light removal unit (300) for removing reflected light excluding scattered light after the linear light is reflected on the object; and
A line-shaped hole (401) is provided at the lower part of the incident light linearization unit, the scattered light detection unit, and the reflected light removal unit, and is in contact with the object, so that the linear light is applied to the inspection area of the object, and a support unit (400) is provided to darken the inspection area of the object so that no external light other than the linear light is applied.
A skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement, characterized by including:
In the third paragraph,
The above incident light linearization unit (100) is
An entrance (101) in the form of a hole through which the incident light is applied to the upper surface;
A first guide (102) having a shape in which the gap between a pair of facing surfaces, the first front side (102a) and the first back side (102b), narrows from the top to the bottom, and the other pair of facing surfaces, the first left side (102c) and the first right side (102d), are parallel to linearize the incident light and limit the light applied from the outside; and
A first slit (103) in the form of a line formed at the lower portion of the first guide (102) and through which the linear light is outputted by passing through the first guide (102).
A skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement, characterized by including:
In paragraph 4,
The above scattered light detection unit (200)
A second slit (201) in the form of a line formed on the lower surface and to which only the scattered light is applied after the linear light output from the first slit (103) is reflected on the object;
The second guide (202) restricts the light applied from the outside by guiding the scattered light applied through the second slit (201) in such a way that the gap between the second front side (202a) and the second back side (202b), which are a pair of opposing surfaces, increases from the bottom to the top, and the second left side (202c) and the second right side (202d), which are a pair of opposing surfaces, are parallel; and
An outlet (203) formed on the upper part of the second guide (202) and having a circular hole through which the scattered light is output
A skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement, characterized by including:
In paragraph 5,
The above-mentioned reflection removal unit (300) is
A third slit (301) in the form of a line formed on the lower surface, to which the linear light output from the first slit (103) is reflected on the object and then the reflected light is applied; and
The third guide (302) that guides the reflected light applied through the third slit (301), but has a shape in which the gap between the third front side (302a) and the third back side (302b), which are a pair of facing surfaces that face each other from the bottom to the top, narrows and meets each other, and the remaining pair of facing surfaces, the third left side (302c) and the third right side (302d), are parallel to restrict the light applied from the outside and allow the reflected light to converge and be converted into heat energy.
A skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement, characterized by including:
In the second paragraph,
The above scattered light separation unit (10)
It is formed of metal material and is characterized by having all surfaces coated with a black oxide film.
The exterior of the inspection position acquisition unit (50) is formed as a sealed structure except for the detection area so that the light output from the light emitting unit (51) or the light reflected from the detection area is not applied to the scattered light separation unit (10).
The inspection area of the object inspected through the above-mentioned scattered light separation unit (10) and the detection area detected through the above-mentioned inspection position acquisition unit (50) are provided at a distance apart from each other by the preset distance.
A skin component measurement system capable of 2D expansion of a hyperspectral image using positional displacement, characterized in that the amount of movement (Δx) in the X-axis direction and the amount of movement (Δy) in the Y-axis direction of the above detection area become positional displacement of the inspection area of the above object.
In the first paragraph,
The above hyperspectral detection unit (30) is
A first lens (31) that receives detection light output from the above-mentioned scattered light separation unit (10);
A slit element (32) for extracting a necessary portion from the detection light passing through the first lens (31);
A second lens (33) that receives detection light passing through the above slit element (32);
A spectral element (34) that disperses the detection light passing through the second lens (330);
A focusing lens (35) that focuses the above-mentioned scattered detection light; and
A spectrum signal generator (36) that generates a spectrum signal for the detection light that has been spectrally divided by the spectral element (34) that has passed through the above-mentioned collecting lens (35).
A skin component measurement system capable of 2D expansion of hyperspectral images using positional displacement, characterized by including:
A skin component measurement method capable of 2D expansion of hyperspectral images using positional displacement,
A light irradiation step (S10) for irradiating light having a single wavelength into the entrance of a scattered light separation unit;
An incident light linearization step (S20) that converts the incident light investigated above into linear light and outputs it;
A scattered light detection step (S30) for detecting only the scattered light through the exit of the scattered light separation unit after the linear light is reflected in the inspection area of the object (skin);
A reflected light removal step (S40) in which reflected light excluding the scattered light is removed after the linear light is reflected in the inspection area of the object;
An inspection position displacement acquisition step (S50) for acquiring a position displacement of the object in the inspection area using an inspection position acquisition unit;
A spectrum signal detection step (S60) for detecting spectrum signals of the scattered light applied from the exit of the scattered light separation unit in a hyperspectral manner;
A 2D hyperspectral image generation step (S70) for generating a 2D hyperspectral image based on the above spectrum signals and the positional displacement of the inspection area received from the inspection position acquisition unit; and
Skin component measurement step (S80) for measuring skin components by analyzing the 2D hyperspectral image generated above
A skin component measurement method capable of 2D expansion of hyperspectral images using positional displacement including .
In Article 9,
The above inspection position displacement acquisition step (S50) is
A light emitting step that outputs light from a light emitting part;
An induction and refraction step of inducing and refracting light output through the above light-emitting unit and applying it to a detection area on the surface of the object;
A detection step for recognizing light reflected from the above detection area;
A step of detecting the current image of the detection area through the above detection step and calculating the amount of movement (Δx) in the X-axis direction and the amount of movement (Δy) in the Y-axis direction by comparing it with the previous image; and
A step of obtaining the displacement in the X-axis direction (Δx) and the displacement in the Y-axis direction (Δy) as the position displacement.
A skin component measurement method capable of 2D expansion of a hyperspectral image using positional displacement, characterized in that it includes.