WO2019119652A1 - Optical sensing device, detection system and detection method - Google Patents

Abstract

An optical sensing device, a detection system and a detection method. The optical sensing device (103) comprises a rotation module and a linear sensor (1032) arranged on the rotation module; and the linear sensor (1032) is used for collecting and recording, when rotating with the rotation module, optical signals, in different directions, of at least one object point in a target detection object (104). The optical signals, in different directions, of at least one object point in a target detection object (104) are collected and recorded by the linear sensor (1032); position coordinates of the target detection object (104) and the optical sensing device (103) are recorded and stored by a position sensor (102); and in turn, a processor obtains optical field information of the target detection object (104) according to the acquired optical signals and position coordinates, and calculates a depth of field.

Description

Optical sensing device, detection system and detection method

[Technical Field]

The present invention relates to the field of imaging technology, and in particular to a light sensing device, a detection system, and a detection method.

 【Background technique】

Light field imaging technology is a technology that combines information processing technology and optical imaging technology. It acquires the four-dimensional light field distribution of the target object through the imaging system, and then uses the information processing technology to invert the light field. For a point in the traditional three-dimensional space, a pixel on a traditional digital picture can only record the integrated intensity of all the light passing through the point, and the light field picture can record the light in multiple directions passing through the same point, using light. The light field data recorded in the field picture can observe pictures with different viewing angles and different focal lengths. Compared with traditional cameras, light field cameras have many advantages, such as: no occlusion, small amount of calculation, no influence on lighting, 3D information and texture information, and easy subsequent image analysis.

However, the existing light field camera is difficult to obtain accurate light field information of the target object and the calculated depth of field is not accurate, which limits the wide application of the light field camera in the industrial field.

 [Summary of the Invention]

The technical problem to be solved by the present invention is to provide a light sensing device, a detecting system and a detecting method, which can accurately calculate the depth of field while acquiring the light field information of the target detecting object.

In order to solve the above technical problem, the first technical solution adopted by the present invention is to provide a light sensing device including: a rotation module and a line sensor disposed on the rotation module, and the line sensor is used in The optical signals in different directions of at least one object point in the target detection are acquired and recorded following the rotation of the rotation module.

In order to solve the above technical problem, the second technical solution adopted by the present invention is to provide a detection system, which includes:

a position sensor, a light sensing device, and a processor coupled to the light sensing device;

The light sensing device includes a rotation module and a line sensor disposed on the rotation module, and the line sensor is configured to collect and record optical signals in different directions of at least one object point in the target detection while following the rotation of the rotation module;

The position sensor is configured to record and store the position coordinates of the target detector and the light sensing device;

The processor is configured to perform correlation processing according to the position coordinates and the optical signal to obtain the light field information of the target detector.

In order to solve the above technical problem, the third technical solution adopted by the present invention is to provide a detection method, which includes:

The line sensor collects and records the optical signals in different directions of at least one object point in the target detection, and the position sensor records and stores the position coordinates of the target detection object and the light sensing device, and transmits the optical signal and the position coordinates to the processor;

The processor performs correlation processing on the acquired optical signal and position coordinates to obtain light field information of the target detection object.

The beneficial effects of the present invention are: different from the prior art, the light sensing device of the present invention comprises a rotation module and a line sensor disposed on the rotation module, and the line sensor is used for collecting and recording when following the rotation of the rotation module An optical signal in a different direction of at least one object point in the target detection. The line signal sensor collects and records the light signals of different directions of at least one object point in the target detection, and records and stores the position coordinates of the target detection object and the light sensing device through the position sensor, thereby acquiring the target detection object light field Accurately calculate the depth of field while the information is being used.

 [Description of the Drawings]

1 is a schematic structural view of an embodiment of a detection system provided by the present invention;

FIG. 2.1 is a schematic diagram of the optical sensor device provided by the present invention collecting an object light signal on a target detection object at a certain time; FIG.

FIG. 2.2 is a schematic diagram of the optical sensor device provided by the present invention collecting an object spot light signal on a target detection object at another time; FIG.

3 is a top plan view of a light sensing device provided by the present invention;

4 is a schematic flow chart of a detection method provided by the present invention.

【Detailed ways】

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to collect optical signals in different directions of at least one object point in the target detection, the detection system provided by the present invention comprises a position sensor, a light sensing device and a processor connected to the light sensing device. Among them, the object point refers to a point on the object. Acquiring and recording the optical signals in different directions of at least one object point in the target detection by the line sensor provided in the light sensing device, and recording and storing the position coordinates of the target detecting object and the light sensing device through the position sensor, and processing The device performs correlation processing according to the acquired optical signal and position coordinates to obtain an optical signal set including optical signal angle information and light intensity information corresponding to different object points, thereby acquiring light field information of the target detection object, and then calculating the depth of field.

In order to clearly explain the working process of the above detection system, please refer to FIG. 1 to FIG. 4.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an embodiment of a detection system according to the present invention. As shown in FIG. 1, the detection system includes: a transmission module 101, a position sensor 102 connected to the transmission module 101, and a light transmission. The sensing device 103, the light source 105, and a processor (not shown). In this embodiment, the transmitting module 101 is a conveyor belt, the conveyor belt is used for transmitting the target detecting object 104, the position sensor 102 is a position encoder, and the position encoder is used for recording and storing the position coordinates of the target detecting object 104 and the light sensing device 103, and The position coordinate information is transmitted to the processor. The light sensing device 103 includes a rotation module, a line sensor 1032 disposed on the rotation module, and a light shielding plate 1033 fixed to one side of the line sensor 1032. The height of the light shielding plate 1033 is adapted to the optical signal collection angle of the line sensor 1032. . In this embodiment, the rotating module is a galvanometer, and the galvanometer includes a vibrating lens 1031 and a motor 1035 connected to each other. At least one rotating shaft 1034 is disposed on the vibrating lens 1031. The motor 1035 is configured to rotate the vibrating lens 1031 around the rotating shaft 1034. The target detector 104 is located within the illumination range of the light source 105, and the target detector 104 reflects the light impinging thereon, and the line sensor 1032 receives the light reflected by the object. The line sensor 1032 collects optical signals in different directions of at least one object point in the target object 104, including the angle information and the light intensity information of the optical signal, and transmits the information to the processor. Among them, the object point refers to a point on the object. The processor performs correlation processing according to the acquired position coordinates and optical information to obtain light field information of the target object, thereby calculating depth of field and resolution.

In an embodiment, in order to collect optical signals in different directions of at least one object point in the target detecting object 104, the target detecting object 104 is placed on the transmitting module 101, and the transmitting module 101 is started to transmit the target detecting object 104 without starting. The motor 1035 rotates the optical sensor device 103, and the position encoder is fixedly mounted on the transport module 101, and the target detector 104 is located within the illumination range of the light source 105. The line sensor 1032 collects and records the optical signals in different directions of at least one object point in the target detector 104 during the movement of the target detector 104, including the angle information and the light intensity information of the optical signal, and transmits the collected optical signals to the optical signal. processor. At the same time, the position encoder records and stores the position coordinates of the target detector 104 and the light sensing device 103 in this process, and transmits the position coordinate information to the processor. The processor performs correlation processing according to the acquired optical signal and the position coordinate information to obtain an optical signal set corresponding to different object points in the target object 104. The optical signal set includes angle information and light intensity information of the optical signals in different directions of the object point. In the process of acquiring the position coordinates of the target detector 104 and the light sensing device 103, the position sensor does not rotate, the position coordinates of the light sensor device 103 are unchanged, and the position coordinates of the target detector 104 are changed. Therefore, the line sensor 1032 collects and records the optical signals in different directions of at least one object point in the target object 104, and the processor obtains the optical signal set and the light field information of different object points of the target detection object through correlation processing, thereby calculating the depth of field and Resolution.

Specifically, please refer to FIG. 2.1. FIG. 2.1 is a schematic diagram of the optical sensor device provided by the present invention collecting an object spot light signal on a target detection object at a certain time. As shown in FIG. 2.1, A, B, and C respectively represent three different object points on the target detector 104, and the line connecting point A and the line sensor 1032 represents the object point A collected by the line sensor 1032 at this time. The direction of the optical signal, the line connecting point B and the line sensor 1032 represents the direction of the light signal from the object point B collected by the line sensor 1032 at this time, and the line connecting the point C and the line sensor 1032 represents the line array sensor at this moment. The direction of the optical signal from object point C collected by 1032. The line sensor 1032 acquires the light intensity information from the A, B, and C optical signals by collecting the optical signals of the object points A, B, and C at this time, and the position encoder simultaneously records and stores the positions of the target detecting object 104 and the light sensing device 103. The coordinates, in turn, obtain the angle information of the optical signals from the object points A, B, and C respectively collected by the light sensing device 103 at this time. As shown in FIG. 2.2, FIG. 2.2 is a schematic diagram of the optical sensor device provided by the present invention collecting an object spot light signal on a target object at another time. According to the same method as described above, the light intensity information and the angle information of the light signals from the object points A, B, and C at another time are obtained. The processor performs correlation processing according to the obtained angle information of the object points A, B, and C optical signals and the light intensity information, respectively, and obtains the optical signal set of the object points A, B, and C, respectively, and the optical signal set of the object point A. The two optical signal angle information of the object point A at these two moments and the two light intensity information are included. The optical signal set of the object point B includes two optical signal angle information and two lights of the object point B at the two moments. Strong information, the set of optical signals of object point C includes two optical signal angle information and two light intensity information of object point C at these two moments. The optical signal information of the plurality of times is collected during the optical signal acquisition process, so that the processor obtains the optical signal set including the plurality of angle information and the light intensity information of each object point, and obtains the light field information of the target detecting object 104, thereby calculating Depth of field.

In another embodiment, the target detector 104 is placed on the transport module 101, the position encoder is fixedly mounted on the transport module 101, the transport module 101 is not activated to transmit the target detector 104, and the starter motor 1035 drives the vibrating lens 1031. Rotating around the rotating shaft 1034, the line sensor 1032 located on the vibrating lens 1031 collects and records the optical signals in different directions of at least one object point in the target detecting object 104 and transmits them to the processor, and the line array sensor 1032 collects. And recording the optical signal, the position encoder records and stores the position coordinates of the target detector 104 and the light sensing device 103 and transmits the coordinates to the processor, and the processor performs correlation processing according to the acquired optical signal and the position coordinate information to obtain the target detection object 104. The set of optical signals corresponding to the object point includes the angle information and the light intensity information of the light signals in different directions of the object point. In the process of acquiring the position coordinates of the target detector 104 and the light sensing device 103, the position sensor rotates, the position coordinates of the light sensor device 103 change, and the position coordinates of the target detector 104 do not change. Therefore, the line sensor 1032 collects and records the light signals in different directions of at least one object point in the target object 104, and the processor obtains the light signal set and the light field information of different object points of the target object through the correlation process, thereby calculating the depth of field.

In other embodiments, the target detector 104 is placed on the transport module 101, the position encoder 102 is fixedly mounted on the transport module 101, the transport module 101 is activated to transmit the target detector 104, and the starter motor 1035 drives the vibrating lens 1031. The rotating shaft 1034 rotates, and the line sensor 1032 located on the vibrating lens 1031 collects and records the optical signals in different directions of at least one object point in the target detecting object 104 and transmits them to the processor, and the line array sensor 1032 collects and rotates. While recording the optical signal, the position encoder 102 records and stores the position coordinates of the target detector 104 and the light sensing device 103 and transmits them to the processor, and the processor performs correlation processing according to the acquired optical signal and position coordinate information to obtain the target detected object 104. The set of optical signals corresponding to the object point includes the angle information and the light intensity information of the light signals in different directions of the object point. In the process of acquiring the position coordinates of the target detector 104 and the light sensing device 103, the position sensor rotates, the position coordinates of the light sensor device 103 change, and the position coordinates of the target detector 104 also change. Therefore, the line sensor 1032 collects and records the light signals in different directions of at least one object point in the target object 104, and the processor obtains the light signal set and the light field information of different object points of the target object through the correlation process, thereby calculating the depth of field.

As can be seen from the above, the light sensing device of the present invention includes a rotation module and a line sensor disposed on the rotation module, and the line sensor is configured to collect and record different directions of at least one object point in the target detection while following the rotation of the rotation module. Light signal. The line signal sensor collects and records the light signals of different directions of at least one object point in the target detection, and records and stores the position coordinates of the target detection object and the light sensing device through the position sensor, thereby acquiring the target detection object light field Accurately calculate the depth of field while the information is being used.

Please refer to FIG. 3. FIG. 3 is a schematic top view of the optical sensing device provided by the present invention.

As shown in FIG. 3, the optical sensing device 103 includes a vibrating lens 1031, a line sensor 1032, a visor 1033, and a motor connected to the vibrating lens 1031. At least one rotating shaft is disposed on the vibrating lens, and the motor is used to drive the vibrating lens 1031. Rotate around the axis of rotation. The line sensor 1032 is configured to collect and record optical signals in different directions of at least one object point in the target object 104. The two visors 1033 are respectively mounted on one side of the line sensor 1032, and the height of the visor 1033 and the line sensor 1032 are The optical signal acquisition angle is adapted. In this embodiment, the number of rotating shafts is one, and in other embodiments, a plurality of rotating shafts may be provided.

Please refer to FIG. 4. FIG. 4 is a schematic diagram of a specific process of the detection method provided by the present invention. Hereinafter, specific steps of the method will be described in detail.

S401: The line sensor collects and records the light signals of different directions of at least one object point in the target detection, and the position sensor records and stores the position coordinates of the target detection object and the light sensing device, and transmits the optical signal and the position coordinate to the processing. Device.

In one embodiment, as shown in FIG. 1, the transfer module 101 is activated to transmit the target detector 104, the motor 1035 is not activated to rotate the light sensing device 103, and the line sensor 1032 is in the process of moving the target detector 104. Optical signals of different directions of at least one object point are collected and recorded and transmitted to the processor. The optical signal includes angle information and light intensity information. The position encoder records and stores the position coordinates of the light sensing device 103 and the target detector 104 during the movement of the target detector 104, and transmits the position coordinate information to the processor.

In another embodiment, the starter motor 1035 rotates the light sensing device 103, the transfer module 101 is not activated to transmit the target detector 104, and the line sensor 1032 collects and records during the rotation following the light sensing device 103. At least one object in the target detector 104 is optically transmitted in different directions and transmitted to the processor. The optical signal includes angle information and light intensity information. The position encoder records and stores the position coordinates of the light sensing device 103 and the target detector 104 during the rotation of the light sensing device 103, and transmits the position coordinate information to the processor.

In other embodiments, the starter motor 1035 rotates the light sensing device 103 while the transfer module 101 is activated to transmit the target detector 104, and the line sensor 1032 collects and records the target during the rotation following the light sensing device 103. At least one object in the object 104 is optically transmitted in different directions and transmitted to the processor. The optical signal includes angle information and light intensity information. The position encoder records and stores the position coordinates of the light sensing device 103 and the target detector 104 during this process, and transmits the position coordinate information to the processor.

S402: The processor performs association processing on the acquired optical signal and position coordinates to obtain light field information of the target detection object.

In step S401, the line sensor 1032 transmits the collected optical signal and the position coordinate information recorded by the position encoder to the processor respectively, and the processor performs the correlation processing according to the acquired optical signal and the position coordinate information in step S402. The set of optical signals corresponding to the object points, the set of each object point includes the angle information and the light intensity information of the object point light signal, thereby obtaining the light field information of the target object and calculating the depth of field.

Specifically, please refer to FIG. 2.1. FIG. 2.1 is a schematic diagram of the optical sensor device provided by the present invention collecting an object spot light signal on a target detection object at a certain time. As shown in FIG. 2.1, A, B, and C respectively represent three different object points on the target detector 104, and the line connecting point A and the line sensor 1032 represents the object point A collected by the line sensor 1032 at this time. The direction of the optical signal, the line connecting point B and the line sensor 1032 represents the direction of the light signal from the object point B collected by the line sensor 1032 at this time, and the line connecting the point C and the line sensor 1032 represents the line array sensor at this moment. The direction of the optical signal from object point C collected by 1032. The line sensor 1032 acquires the light intensity information from the A, B, and C optical signals by collecting the optical signals of the object points A, B, and C at this time, and the position encoder simultaneously records and stores the positions of the target detecting object 104 and the light sensing device 103. The coordinates, in turn, obtain the angle information of the optical signals from the object points A, B, and C respectively collected by the light sensing device 103 at this time. As shown in FIG. 2.2, FIG. 2.2 is a schematic diagram of the optical sensor device provided by the present invention collecting an object spot light signal on a target object at another time. According to the same method as described above, the light intensity information and the angle information of the light signals from the object points A, B, and C at another time are obtained. The processor performs correlation processing according to the obtained angle information of the object points A, B, and C optical signals and the light intensity information, respectively, and obtains the optical signal set of the object points A, B, and C, respectively, and the optical signal set of the object point A. The two optical signal angle information of the object point A at these two moments and the two light intensity information are included. The optical signal set of the object point B includes two optical signal angle information and two lights of the object point B at the two moments. Strong information, the set of optical signals of object point C includes two optical signal angle information and two light intensity information of object point C at these two moments. The optical signal information of the plurality of times is collected during the optical signal acquisition process, so that the processor obtains the optical signal set including the plurality of angle information and the light intensity information of each object point, and obtains the light field information of the target detecting object 104, thereby calculating Depth of field.

The beneficial effects of the present invention are: different from the prior art, the light sensing device of the present invention comprises a rotation module and a line sensor disposed on the rotation module, and the line sensor is used for collecting and recording when following the rotation of the rotation module An optical signal in a different direction of at least one object point in the target detection. The line signal sensor collects and records the light signals of different directions of at least one object point in the target detection, and records and stores the position coordinates of the target detection object and the light sensing device through the position sensor, thereby acquiring the target detection object light field Accurately calculate the depth of field while the information is being used.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims (13)

A light sensing device, comprising: a rotation module and a line sensor disposed on the rotation module, the line sensor for collecting when following the rotation of the rotation module And recording light signals in different directions of at least one object point in the target detection. The optical sensing device according to claim 1, wherein the rotating module is a galvanometer, and the galvanometer comprises a vibrating lens and a motor connected to each other, the vibrating lens comprising at least one rotating shaft, and the motor is used for The rotating lens is driven to rotate around the rotating shaft. The optical sensing device according to claim 1, wherein said light sensing device further comprises at least one visor, each of said visors being fixed to one side of said line sensor, wherein said The height of the visor is adapted to the optical signal acquisition angle of the line sensor. A detection system, comprising: a position sensor, a light sensing device, and a processor coupled to the light sensing device; The light sensing device includes a rotation module and a line sensor disposed on the rotation module, the line sensor for collecting and recording a difference in at least one object point in the target detection while following the rotation of the rotation module Directional light signal; The position sensor is configured to record and store position coordinates of the target detector and the light sensing device; The processor is configured to perform association processing according to the position coordinates and the optical signal to acquire light field information of the target detector. The detection system of claim 4 wherein said image detection system further comprises a transfer module for transmitting a target test object, said position sensor being mounted on said transfer module. The image sensing system according to claim 5, wherein said transfer module is a conveyor belt, said position sensor is a position encoder, and said position encoder is mounted on said conveyor belt. The detecting system according to claim 4, wherein the rotating module is a galvanometer, the galvanometer comprises a vibrating lens and a motor connected to each other, and the vibrating lens comprises at least one rotating shaft, and the motor is used for driving The oscillating lens rotates about the rotating shaft. The detecting system according to claim 4, wherein said light sensing device further comprises at least one light shielding plate, each of said light shielding plates being fixed to one side of said line sensor, the height of said light shielding plate Compatible with the optical signal acquisition angle of the line sensor. The detection system according to claim 4, wherein said image detecting system further comprises a light source, said target detecting object being located within an illumination range of said light source. A detection method, characterized in that the detection method comprises: The line sensor collects and records optical signals in different directions of at least one object point in the target detection, and the position sensor records and stores the position coordinates of the target detection object and the optical sensing device, and transmits the optical signal and the position coordinate to the processing. Device The processor performs correlation processing on the acquired optical signal and position coordinates to obtain light field information of the target detection object. The detecting method according to claim 10, wherein the line sensor collects and records optical signals of different directions of at least one object point in the target detection, and the position sensor records and stores the target detecting object and the optical sensing device. The step of transmitting the optical signal and the position coordinate to the processor includes: The line sensor collects and records different direction optical signals of at least one object point in the target detection when the rotation module rotates, and the position sensor records and stores the position coordinates of the target detection object and the light sensing device, and the optical signal and the position The coordinates are transferred to the processor. The detecting method according to claim 10, wherein the line sensor collects and records optical signals of different directions of at least one object point in the target detection, and the position sensor records and stores the target detecting object and the optical sensing device. The step of transmitting the optical signal and the position coordinate to the processor includes: The transmitting module transmits the target detection object, and the linear array sensor does not rotate to collect and record different direction optical signals of at least one object point in the target detection, and the position sensor records and stores the position coordinates of the target detection object and the optical sensing device, and The optical signal and position coordinates are transmitted to the processor. The detecting method according to claim 10, wherein the step of the processor performing the associating processing on the acquired optical signal and the position coordinates to obtain the light field information of the target detection object comprises: The processor performs correlation processing on the acquired optical signal and position coordinates, and obtains an optical signal set including optical signal angle information and light intensity information corresponding to different object points, thereby acquiring light field information of the target detection object and calculating Depth of field.