JP2011247810A - Electronic equipment - Google Patents

Abstract

An electronic apparatus capable of measuring an actual size of a subject even when an accurate distance to the subject cannot be detected.
A projection unit that projects a scale image onto an area including at least a partial area around the subject, and an imaging unit that captures the subject in a state in which the scale image is projected by the projection unit. Is provided.
[Selection] Figure 1

Description

  The present invention relates to an electronic device.

  Conventionally, based on the size of the subject in the imaging screen detected from the luminance difference between the subject and the background, the distance to the subject detected by the AF (autofocus) function, and the angle of view calculated by detecting the zoom position of the lens, There are electronic cameras that calculate actual dimensions (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2003-244501

  However, in the above-described electronic camera, it is necessary to detect an accurate distance to the subject in order to calculate the actual size of the subject.

  An object of the present invention is to provide an electronic device that can measure the actual size of a subject even when an accurate distance to the subject cannot be detected.

  An electronic apparatus according to the present invention includes a projection unit that projects a scale image onto a region that includes at least a partial region around the subject, and an imaging unit that captures the subject in a state where the scale image is projected by the projection unit. It is characterized by providing.

  According to the present invention, the actual size of a subject can be measured even when the exact distance to the subject cannot be detected.

It is a block diagram which shows the system configuration | structure of the camera which concerns on 1st Embodiment. It is a flowchart which shows the process of the scale projection and imaging mode of the camera which concerns on a 1st form. It is a figure which shows the projection state of the camera which concerns on 1st Embodiment. It is a figure which shows the projection state of the camera which concerns on 1st Embodiment. It is a figure which shows the projection state of the camera which concerns on 2nd Embodiment.

  A digital camera (hereinafter referred to as a camera) that is an electronic apparatus according to a first embodiment of the invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of the camera according to the first embodiment. As shown in FIG. 1, the camera 2 includes a control unit 4 that comprehensively controls each unit of the camera 2. The control unit 4 stores image data generated by performing A / D conversion on an operation unit 6, an imaging unit 8 that images a subject, and an imaging signal output from the imaging unit 8 in an A / D conversion unit (not shown). A storage unit 10 for storing, a memory card 12 for storing image data of a captured image and a projected image, a projection unit 14 for projecting a scale image to be described later to an area including at least a partial area around the subject, and an imaging unit 8 A display unit 16 is connected to display an image based on the captured image data and a mode setting for the camera 2. Here, the operation unit 6 includes a power switch, a release button, and a mode setting button for setting the mode of the camera 2.

  The storage unit 10 stores a plurality of scale images corresponding to the distance from the projection unit 14 to the subject. The scale image is an image on which a square scale is projected. The scale image is used when the distance from the projection unit 14 to the subject is 50 cm. The scale image is used when the distance from the projection unit 14 to the subject is 100 cm. Etc. are stored. Here, in any scale image, when the distance from the projection unit 14 to the subject is set to a predetermined distance, the vertical and horizontal lengths of the scale grid projected onto the subject are 5 cm. Has been.

  In addition, the projection unit 14 performs display control of the power source control unit 20 that controls turning on / off of the LED light source 18 that is a light source and the amount of projection light emitted from the LED light source 18, and the LCOS 22 that displays a scale image to be projected. A projection control unit 24 is provided.

  Next, the scale projection / imaging mode processing of the camera 2 according to the first embodiment will be described with reference to the flowchart of FIG. First, the operator turns on the power switch of the operation unit 6 and operates the mode setting button to shift the mode of the camera 2 to the scale projection / imaging mode (step S10). After shifting to the scale projection / imaging mode, the control unit 4 displays information for allowing the operator to specify a scale image to be projected on the display unit 16. Here, when the operator operates the operation unit 6 to specify a scale image to be used when the distance from the projection unit 14 to the subject is 50 cm (step S12), the control unit 4 specifies the scale specified from the storage unit 10. The image data of the image is read out, and a scale image based on the image data is displayed on the LCOS 22 by the projection control unit 24. Further, the LED light source 18 is turned on by the power controller 20.

  The operator adjusts the position of the camera 2 body so that the distance from the projection unit 14 to the subject is approximately 50 cm. Then, when the operator operates a focus slider (not shown) to focus on the scale image projected on the placement surface W, a grid for the region including the subject 30 as shown in FIG. A clear scale image 32 having a vertical and horizontal length of 5 cm is projected (step S14).

  At the same time as the projection of the scale image 32 by the projection unit 14 is started, the control unit 4 images an area including the subject 30 by the imaging unit 8 (step S16), and displays an image based on the imaging data output from the imaging unit 8 as a display unit. 16 is displayed. Here, the image data based on the imaging data is temporarily stored in the storage unit 10. The control unit 4 determines the region of the subject 30 included in the image based on the image data stored in the storage unit 10 (step S18), and replaces the scale image displayed on the LCOS 22 with the determined subject 30. A scale image for projecting the scale image to an area excluding the area is displayed on the LCOS 22. Therefore, as shown in FIG. 4, the scale image 32 is projected onto an area excluding the area of the subject 30 determined by the control unit 4 by the projection unit 14 (step S20).

  When the operator depresses the release button in this state (step S22, Yes), the control unit 4 captures the subject 30 and the scale image 32 projected around the subject by the imaging unit 8 (step S24). The image data based on the processed image is stored in the storage unit 10. Therefore, the operator can easily measure the actual size of the subject 30 using the grid of the scale image 32 by causing the display unit 16 to display an image based on the image data stored in the storage unit 10.

  In step S12, when the operator designates a scale image used when the distance from the projection unit 14 to the subject is 100 cm, the operator sets the distance from the projection unit 14 to the subject as 100 cm and sets the scale image. As a result of the projection, a clear scale image having a horizontal and vertical width of 5 cm is projected onto the area including the subject as in the above-described embodiment, so the scale image is projected onto the area including the subject. On the other hand, the actual size of the subject 30 can be easily measured using the grid of the scale image 32 imaged together with the subject by imaging the region including the subject by the imaging unit 8.

  According to the camera of the first embodiment of the present invention, the actual size of the subject can be measured even when the exact distance to the subject cannot be detected. In addition, the actual size of the subject can be easily measured without using a scale (measurement) for measuring the actual size of the subject. In addition, since the scale image projected from the projection unit can be specified according to the distance from the projection unit to the subject, the actual size can be measured even for a subject that is somewhat large.

  Next, a camera according to a second embodiment of the present invention will be described. Since the configuration of the camera according to the second embodiment is the same as that of the camera 2 shown in FIG. 1, in the description of the camera according to the second embodiment, the camera according to the first embodiment. The same reference numerals as those used in the configuration are used.

  First, when the operator turns on the power switch of the operation unit 6 and operates the mode setting button as in step S10, the mode of the camera 2 is shifted to the scale projection / imaging mode, and when the release button is pressed halfway, the storage unit The image data of a predetermined scale image is read from 10, and the predetermined scale image is projected onto an area including the subject 30 placed on the placement surface W by the projection unit 14. Then, the operator adjusts the distance from the projection unit 14 to the subject 30 so that the vertical and horizontal lengths of the grid of the scale image 32 projected on the placement surface W become a desired length. That is, as shown in FIG. 5, the operator places a target of which size is known in advance (for example, a mobile phone 38 having a length of 10 cm) on the placement surface W and is projected by the projection unit 14. The position of the camera 2 body is adjusted so that the lengths of the two squares of the scale image 32 coincide with the size of the mobile phone 38.

  Then, the same processing as Step S16 to Step S24 shown in FIG. 2 of the first embodiment described above is performed. Therefore, the operator can easily measure the actual size of the subject 30 using the grid of the scale image 32 by causing the display unit 16 to display an image based on the image data stored in the storage unit 10.

  The camera according to the second embodiment of the present invention can measure the actual size of the subject even when the distance from the main body to the subject cannot be accurately detected. Further, the actual size of the subject can be measured without using a scale (a ruler) for measuring the actual size of the subject.

  In the above-described embodiment, a scale image in which a grid-like scale is displayed is used. However, a scale image in which a linear scale is displayed in at least one of vertical and horizontal directions may be used.

  In the above-described embodiment, the control unit 4 may change the color of the scale image based on the color information of the subject determined from the image based on the image data captured by the imaging unit 8. In this case, for example, when the control unit 4 determines that the color of the subject determined from the image based on the image data captured by the imaging unit 8 is entirely black, the color of the scale displayed in the scale image May be changed from normal black to white.

  In the above-described embodiment, the operator may change the color of the scale image projected by operating the operation unit 6.

  In the above-described embodiment, the subject 30 is imaged while the scale image 32 is projected around the subject 30 (the scale image 32 is not projected onto the subject 30). In a state where the scale image 32 is projected on and around the subject 30, the subject 30 may be imaged and the actual size of the subject may be measured using this image. In this case, the actual dimension of each part of the subject can be accurately measured. In this case, it is effective to change the color of the scale image based on the color information of the subject.

  DESCRIPTION OF SYMBOLS 2 ... Camera, 4 ... Control part, 8 ... Imaging part, 14 ... Projection part, 24 ... Projection control part, 30 ... Subject, 32 ... Scale image.

Claims (7)

A projection unit that projects a scale image onto an area including at least a partial area around the subject;
An electronic apparatus comprising: an imaging unit that images the subject in a state where the scale image is projected by the projection unit.   The electronic apparatus according to claim 1, further comprising a plurality of the scale images based on a distance from the projection unit to the subject.   The electronic apparatus according to claim 1, wherein the scale image projected by the projection unit is changed by an operator based on a size of a target included in the projection area.   The electronic device according to claim 1, wherein the scale image is an image in which a grid-like scale is displayed.   The electronic device according to claim 1, wherein the scale image is an image in which a linear scale is displayed in at least one of vertical and horizontal directions. A subject determination unit for determining a region of the subject included in an image based on image data captured by the imaging unit;
The electronic apparatus according to claim 1, further comprising: a projection image control unit that projects the scale image onto a region excluding the region of the subject determined by the subject determination unit.   The said projection image control part changes the color of the said scale image based on the color information of the said subject discriminate | determined from the said image based on the said image data imaged by the said imaging part. Electronic equipment.

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