Combined vehicle-mounted display screen surface defect detection device, detection method and device

Abstract

The invention relates to the technical field of defect detection, in particular to a combined type vehicle-mounted display screen surface defect detection device, a combined type vehicle-mounted display screen surface defect detection method and a combined type vehicle-mounted display screen surface defect detection device. According to the real-time moving distance of the display screen to be detected on the conveying device, the area-array camera is driven to carry out sampling photographing, and a second display screen image is obtained; performing display screen defect detection on the first display screen image and the second display screen image through a trained display screen defect detection model to obtain a defect detection result; according to the defect detection result, a circular laser is driven to mark the defect area of the display screen to be detected, defect image collection and image detection of display screens of different sizes and models are compatible, the defect area of the display screen to be detected is marked through the circular laser in the second detection area, redetection is carried out, the false detection rate is reduced, and the detection efficiency is improved. And a new defect detection production line does not need to be designed for different display screens.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of defect detection, in particular to a combined vehicle-mounted display screen surface defect detection device and method. BACKGROUND

[0002] During the production and manufacturing process of a vehicle-mounted display screen, various defects will inevitably occur on the surface thereof. In order to ensure product quality, it is necessary to detect these display screen surface defects by using a machine vision method during the production and manufacturing process. Since the types, sizes, colors and the like of these defects are different, a traditional method designs different visual detection devices for different display screens, and detects different positions or different types of defects respectively. When new detection requirements are added or new size models of display screens are faced with defect detection requirements, the original detection device has a high error. In order to improve detection accuracy, a new detection device needs to be developed. Although this method can achieve the purpose of detection, it requires many detection devices, and the development time cost and economic cost will sharply rise, and the efficiency is not high.

[0003] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0004] The main purpose of the present application is to provide a combined vehicle-mounted display screen surface defect detection device and method, which aims to solve the technical problems of high cost and low efficiency of defect detection devices for different display screens in the prior art.

[0005] To achieve the above purpose, the present application provides a combined vehicle-mounted display screen surface defect detection device, which comprises at least an image acquisition device, a conveying structure, a circular laser and a control module. The image acquisition device and the circular laser are located above the conveying structure, and the image acquisition device is arranged in a first detection area of the conveying structure, and the circular laser is arranged in a second detection area of the first detection area along the conveying direction of the conveying structure. The conveying structure is used for conveying a display screen to be detected to the first detection area for defect detection, or conveying the display screen to be detected to the second detection area for defect position marking. The image acquisition device is used for acquiring a display screen image of the display screen to be detected when the display screen to be detected is conveyed into the first detection area, and sending the display screen image to the control module. The control module is used for defect detection on the received display screen image, and driving the operation of the circular laser according to the defect detection result. The circular laser is used to generate a cylindrical laser to mark a defective area of the display screen to be detected.

[0006] Optionally, the image acquisition device comprises: The body comprises at least five detection areas, including a first detection area and a second detection area, a third detection area, a fourth detection area and a fifth detection area respectively arranged on the four sides of the first detection area; The detection assembly comprises at least three line-scan cameras and at least four area-array cameras, one of the three line-scan cameras is installed in the first detection area, the other two line-scan cameras are installed in the fourth detection area and the fifth detection area respectively, and are arranged in a direction close to each other, and the two area-array camera groups are arranged in the second detection area and the third detection area respectively, and the lenses of the two area-array camera groups are arranged in a direction close to each other; and The light source assembly comprises at least four high-brightness area-array light sources, and the four high-brightness area-array light sources are arranged on the inner walls of the second detection area, the third detection area, the fourth detection area and the fifth detection area respectively and are located on the side away from the first detection area.

[0007] Optionally, the body comprises at least five detection surfaces, and the five detection surfaces are divided into a middle detection surface and four circumferential detection surfaces respectively arranged on the front side, the rear side, the left side and the right side of the middle detection surface, and the four circumferential detection surfaces are all arranged in a direction away from the middle detection surface. The first detection area is arranged on the middle detection surface, and the second detection area, the second detection area, the third detection area and the fourth detection area are arranged on the four circumferential detection surfaces respectively.

[0008] Optionally, the lowest point of the first line-scan camera arranged in the first detection area, the highest point of the second line-scan camera arranged in the fourth detection area and the highest point of the third line-scan camera arranged in the fifth detection area are flush.

[0009] Optionally, the second line-scan camera and the third line-scan camera are arranged symmetrically, and the inclination angles of the second line-scan camera and the third line-scan camera are arranged to be within 40° to 50°.

[0010] Optionally, the first area-array camera group arranged in the second detection area and the second area-array camera group arranged in the third detection area are symmetrically distributed.

[0011] Optionally, the highest position points of each area array camera, the second line scanning camera and the third line scanning camera are levelled.

[0012] Optionally, the inclination angle of each area array camera is set to 40-50 degrees.

[0013] The application provides a vehicle-mounted display screen surface defect detection method, which is applied to the combined vehicle-mounted display screen surface defect detection device. When the display screen to be detected is located in the first detection area, the line array camera is driven to sample and take a picture to obtain a first display screen image. The real-time moving distance of the display screen to be detected on the conveying device is obtained. The area array camera is driven to sample and take a picture according to the real-time moving distance to obtain a second display screen image. The first display screen image and the second display screen image are subjected to display screen defect detection through a trained display screen defect detection model to obtain a defect detection result. The defect area of the display screen to be detected is marked by the circular laser according to the defect detection result.

[0014] In addition, to achieve the above object, the application further provides a vehicle-mounted display screen surface defect detection device, which comprises: A line array image acquisition module is configured to drive the line array camera to sample and take a picture when the display screen to be detected is located in the first detection area to obtain a first display screen image. A distance acquisition module is configured to obtain the real-time moving distance of the display screen to be detected on the conveying device. An area array image acquisition module is configured to drive the area array camera to sample and take a picture according to the real-time moving distance to obtain a second display screen image. A defect detection module is configured to subject the first display screen image and the second display screen image to display screen defect detection through a trained display screen defect detection model to obtain a defect detection result. A defect marking module is configured to mark the defect area of the display screen to be detected by the circular laser according to the defect detection result.

[0015] The application drives the line array camera to sample and take pictures to obtain a first display screen image when the display screen to be detected is located in the first detection area; obtains a real-time moving distance of the display screen to be detected on the conveying device; drives the area array camera to sample and take pictures according to the real-time moving distance to obtain a second display screen image; performs display screen defect detection on the first display screen image and the second display screen image through a trained display screen defect detection model to obtain a defect detection result; and drives the circular laser to mark the defect area of the display screen to be detected according to the defect detection result, which is compatible with defect image acquisition and image detection of display screens of different sizes and models, marks the defect area of the display screen to be detected through the circular laser in the second detection area, and performs re-inspection to reduce the false detection rate, and does not need to design a new defect detection production line for different display screens, thereby avoiding the technical problems of high cost and low efficiency of the defect detection device in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without any creative labor.

[0018] Figure 1 The figure is a schematic diagram of the overall frame of the production line structure of the first embodiment of the combined vehicle-mounted display screen surface defect detection device of the present application. Figure 2 The figure is a top view of the image acquisition device of an embodiment of the combined vehicle-mounted display screen surface defect detection device of the present application. Figure 3 The figure is a left view of the image acquisition device of an embodiment of the combined vehicle-mounted display screen surface defect detection device of the present application. Figure 4 The figure is a front view of the image acquisition device of an embodiment of the combined vehicle-mounted display screen surface defect detection device of the present application. Figure 5 The figure is a flowchart of the first embodiment of the vehicle-mounted display screen surface defect detection method of the present application. Figure 6 The figure is a structure block diagram of the first embodiment of the vehicle-mounted display screen surface defect detection device of the present application. Figure 7 The figure is a structure diagram of the vehicle-mounted display screen surface defect detection equipment of the hardware running environment involved in the embodiment scheme of the present application.

[0019] The objectives, functional characteristics and advantages of the present application will be further illustrated in conjunction with the embodiments, with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0021] In order to better understand the technical solutions of the present application, the following will be described in detail in conjunction with the drawings and specific embodiments.

[0022] Based on this, with reference to Figure 1 , Figure 1 is a structural framework schematic diagram of the combined vehicle-mounted display screen surface defect detection device in the embodiments of the present application, specifically provides a combined vehicle-mounted display screen surface defect detection device, the combined vehicle-mounted display screen surface defect detection device at least includes: image acquisition device, conveying structure, circular laser and control module, the image acquisition device and the circular laser are located above the conveying structure, and the image acquisition device is arranged in the first detection area of the conveying structure, and the circular laser is arranged in the second detection area along the conveying structure in the conveying direction of the first detection area; The conveying structure is used for conveying the display screen to be detected to the first detection area for defect detection, or conveying the display screen to be detected to the second detection area for defect position marking; The image acquisition device is used for acquiring the display screen image of the display screen to be detected when the display screen to be detected is conveyed into the first detection area, and sending the display screen image to the control module; The control module is used for defect detection on the received display screen image, and driving the operation of the circular laser according to the defect detection result; The circular laser is used for generating cylindrical laser to mark the defect area of the display screen to be detected.

[0023] It should be noted that when there is a display screen to be detected on the defect detection production line, the display screen to be detected is moved to the first detection area through the conveying structure, at this time, the photoelectric sensor of the first detection area will generate a photoelectric signal, which will be transmitted to the PLC, and the PLC will trigger the line array camera to sample and take pictures at a fixed sampling frequency after receiving the signal, and at the same time, the area array camera takes pictures when the product to be detected advances (u*h) millimeters, a total of w / (u*h) times of pictures are taken.

[0024] Before this, the host computer in the control module can calculate the sampling frequency of the linear array camera and the number of times of triggering photographing of the area array camera according to the size information of the product and the speed of the uniform motion track. For example, assuming that the length of the product is w millimeters, the speed of the uniform motion track is s millimeters per second, the precision is u millimeters per pixel, and the resolution of the area array camera is h*h, the sampling frequency of the linear array camera is s / u; the number of times of triggering photographing of the area array camera is w / (u*h), and the exposure time of the area array camera is u / 2s. The host computer sets the sampling frequency of the linear array camera into the camera, sets the exposure time of the area array camera into the camera, waits for the display screen to be detected to be moved to the first detection area, and triggers the photoelectric signal of the photoelectric sensor When the motion position of the display screen to be detected exceeds the photoelectric sensor, the photoelectric sensor transmits the signal to the PLC, and the PLC sends a signal to the host computer to stop collecting. Thus, the omnidirectional imaging of the entire product to be detected is completed. Until the product runs to the defect secondary confirmation to be positioned, the PLC controls the track to stop moving, or waits for the next display screen to be detected to be moved to the first detection area, thereby improving the defect detection efficiency of the display screen on the production line.

[0025] Further, the image acquisition device comprises: a machine body comprising at least five detection areas, wherein the five detection areas comprise a first detection area and a second detection area, a third detection area, a fourth detection area and a fifth detection area which are respectively arranged corresponding to the four sides of the first detection area; a detection assembly comprising at least three linear array cameras and at least four area array cameras, wherein one of the three linear array cameras is installed in the first detection area, and the other two linear array cameras are respectively installed in the fourth detection area and the fifth detection area and are arranged in a direction close to each other, and the four area array cameras are divided into two area array camera groups, and the two area array camera groups are respectively arranged in the second detection area and the third detection area, and the lenses of the two area array camera groups are arranged in a direction close to each other; and a light source assembly comprising at least four high-brightness area array light sources, and the four high-brightness area array light sources are respectively arranged on the inner walls of the second detection area, the third detection area, the fourth detection area and the fifth detection area and are located on the side away from the first detection area of the area array camera and the linear array camera.

[0026] It should be noted that, with reference to Figure 2 , Figure 3 and Figure 4 , Figure 2 is a top view of the image acquisition device in the embodiment, Figure 3 is a left view of the image acquisition device in the embodiment, Figure 4Figure 2 is a front view of the image acquisition device in this embodiment, in which, in the middle of the detection device, three line-scan cameras are included, namely line-scan camera X1, line-scan camera X2, and line-scan camera X3. In the perspective of the top view and the front view, line-scan camera X2 is located in the middle of the detection device, and is installed vertically downward. Line-scan camera X1 and line-scan camera X3 are respectively located on the left and right sides of line-scan camera X2, and the top of line-scan camera X1 and line-scan camera X3 is on the same horizontal line as the bottom of line-scan camera X2. Line-scan camera X1 and line-scan camera X3 are installed with an inward inclination. In the perspective of the left view, line-scan camera X1 and line-scan camera X3 are at the same height.

[0027] In the perspective of the top view, two groups of area array cameras are respectively arranged in front of and behind line-scan camera 1, line-scan camera 2, and line-scan camera 3. Area array camera 1 and area array camera 2 are the first group, and are arranged in front of the line-scan cameras. Area array camera 3 and area array camera 4 are the second group, and are arranged behind the line-scan cameras. The four area array cameras are at the same installation height. In the perspective of the left view, the top of the first group of area array cameras and the top of the second group of area array cameras are horizontally aligned with the top installation positions of line-scan camera 1 and line-scan camera 3, and the two groups of area array cameras are installed with an inward inclination of 45 degrees.

[0028] In the perspective of the top view, one high-brightness area array light source is respectively installed on the front, back, left, and right of the detection device, namely high-brightness area array light source 1, high-brightness area array light source 2, high-brightness area array light source 3, and high-brightness area array light source 4. In the perspective of the left view and the front view, the four high-brightness area array light sources are installed with an inward inclination of 45 degrees. High-brightness area array light source 1 and high-brightness area array light source 2 are respectively located below line-scan camera 1 and line-scan camera 3. High-brightness area array light source 3 is located below the first group of area array cameras 1 and area array camera 2, and high-brightness area array light source 4 is located below the second group of area array cameras 3 and area array camera 4.

[0029] In addition, in the perspective of the left view and the front view, data interface 1 is installed on the top of the detection device, and is mainly used for power supply and network data transmission of line-scan camera 1, line-scan camera 2, and line-scan camera 3. Data interface 2 is used for power supply and network data transmission of line-scan camera 1, and power supply and control of high-brightness area array light source 1. Data interface 3 is used for power supply and network data transmission of line-scan camera 3, and power supply and control of high-brightness area array light source 2. Data interface 4 is used for power supply and network data transmission of area array camera 1 and area array camera 2, and power supply and control of high-brightness area array light source 3. Data interface 5 is used for power supply and network data transmission of area array camera 3 and area array camera 4, and power supply and control of high-brightness area array light source 4.

[0030] Further, the machine body comprises at least five detection surfaces, the five detection surfaces are divided into a middle detection surface and four circumferential detection surfaces corresponding to the front side, rear side, left side and right side of the middle detection surface, and the four circumferential detection surfaces are all arranged obliquely downward away from the middle detection surface. The first detection area is formed on the middle detection surface, and the second detection area, the third detection area and the fourth detection area are formed on the four circumferential detection surfaces respectively.

[0031] By arranging the four circumferential detection surfaces around the middle detection surface, the high-brightness light source can be conveniently installed, the shadow area of the first detection area is reduced, and multiple groups of area array cameras and line array cameras can be symmetrically arranged to collect the display screen image in the first detection area from all directions, so that the display screen to be detected is detected from all directions.

[0032] Further, the lowest position point of the first line scanning camera arranged in the first detection area, the highest position point of the second line scanning camera arranged in the fourth detection area and the highest position point of the third line scanning camera arranged in the fifth detection area are flush.

[0033] Further, the second line scanning camera and the third line scanning camera are symmetrically arranged, and the inclination angle of the second line scanning camera and the third line scanning camera is set to 40° to 50°, preferably 45°.

[0034] Further, the first area array camera group arranged in the second detection area and the second area array camera group arranged in the third detection area are symmetrically distributed.

[0035] Further, the highest position point of each area array camera, the highest position point of the second line scanning camera and the third line scanning camera are flush.

[0036] Further, the inclination angle of each area array camera is set to 40° to 50°, preferably 45°.

[0037] The embodiment transmits the display screen to be monitored to the first detection area through the transmission structure, and collects the display screen image from all directions through the image acquisition device, thereby improving the defect detection precision, and drives the circular laser according to the defect detection result to mark the defect area of the display screen to be detected, thereby realizing secondary re-inspection and improving the defect detection effect of the display screen.

[0038] The embodiment of the present application provides a vehicle-mounted display screen surface defect detection method, referring to Figure 5 , Figure 5 is a flowchart of a first embodiment of a vehicle-mounted display screen surface defect detection method of the present application.

[0039] In the embodiment, the vehicle-mounted display screen surface defect detection method comprises the following steps: Step S10: driving the linear array camera to sample and take a picture when the display screen to be detected is located in the first detection area, to obtain a first display screen image.

[0040] Step S20: obtaining a real-time moving distance of the display screen to be detected on the conveying device.

[0041] Step S30: driving the area array camera to sample and take a picture according to the real-time moving distance, to obtain a second display screen image.

[0042] Step S40: performing display screen defect detection on the first display screen image and the second display screen image through the trained display screen defect detection model, to obtain a defect detection result.

[0043] Step S50: driving the circular laser to mark a defect area of the display screen to be detected according to the defect detection result.

[0044] It should be noted that the execution subject of the embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device, a control computer, a control chip, etc. capable of realizing the above functions. The following takes a control chip connected to a defect detection production line as an example to describe the embodiment and the following embodiments.

[0045] It should be noted that when there is a display screen to be detected on the defect detection production line, the display screen to be detected is moved to the first detection area through the conveying structure. At this time, the photoelectric sensor of the first detection area will generate a photoelectric signal, which will be transmitted to the PLC. After receiving the signal, the PLC triggers the linear array camera to sample and take a picture at a fixed sampling frequency. At the same time, when the product to be detected moves forward (u*h) millimeters, the area array camera is triggered to take a picture, a total of w / (u*h) times.

[0046] Before that, the host computer in the control module can calculate the sampling frequency of the linear array camera and the number of times of triggering the area array camera to take a picture according to the size information of the product and the speed of the uniform speed motion track, to improve the comprehensiveness of image acquisition of the display screen to be detected. For example, assuming that the length of the product is w millimeters, the speed of the uniform speed motion track is s millimeters / second, the precision is u millimeters / pixel, and the resolution of the area array camera is h*h, then the sampling frequency of the linear array camera is s / u; the number of times of triggering the area array camera to take a picture is w / (u*h), and the exposure time of the area array camera is u / 2s. The host computer sets the sampling frequency of the linear array camera to the camera, sets the exposure time of the area array camera to the camera, waits for the display screen to be detected to be moved to the first detection area, and triggers the photoelectric sensor of the photoelectric sensor. When the motion position of the display screen to be detected exceeds the trigger position of the photoelectric sensor, the photoelectric sensor transmits the signal to the PLC, and the PLC sends a signal to the upper computer to stop collection. Thus, the omnidirectional imaging of the entire product to be detected is completed. When the product moves to the second detection area for positioning, the PLC controls the track to stop moving or waits for the next display screen to be detected to move to the first detection area, thereby improving the defect detection efficiency of the display screen on the production line.

[0047] After the image acquisition is completed, the upper computer calls the image processing algorithm to detect defects in the collected area array image and line array image. After the defect detection is completed, if it is determined that the product does not have defects, the PLC controls the track to continue running and transports the product out of the detection device. If it is determined that the product has defects, the upper computer controls the circular laser to project a circular laser with a diameter of 2 cm on the defect position of the product in the second detection area. The staff performs secondary confirmation of the defect according to the indication of the circular laser. Finally, the above steps are repeated to realize continuous detection of different products.

[0048] Specifically, due to the image difference between the area array image and the line array image, in order to better detect defects of the display screen, the embodiment can first use automatic exposure based on gray scale statistics for the area array image and perform perspective distortion correction, thereby avoiding overexposure of the image to cover the defects. The line frequency of the line array image is dynamically adjusted through the encoder feedback, and the vibration compensation based on the frequency domain is performed to eliminate the periodic stripes caused by the vibration of the conveying belt.

[0049] The local texture features of the area array image and the global frequency domain features of the line array are spliced, and the spliced image is input into the YOLOv8 for area array model to make a defect decision and identify whether there are point defects and line defects in each region, thereby improving the recognition accuracy of the display screen defect detection.

[0050] The embodiment drives the line array camera to sample and take a picture to obtain a first display screen image when the display screen to be detected is located in the first detection area. The real-time moving distance of the display screen to be detected on the conveying device is obtained. The area array camera is driven to sample and take a picture according to the real-time moving distance to obtain a second display screen image. The first display screen image and the second display screen image are subjected to display screen defect detection through a trained display screen defect detection model to obtain a defect detection result. The defect area of the display screen to be detected is marked by the circular laser according to the defect detection result. The defect image acquisition and image detection of different sizes and models of display screens are compatible. The defect area of the display screen to be detected is marked by the circular laser in the second detection area and is subjected to re-inspection, thereby reducing the false detection rate. Different display screens do not need to be designed with new defect detection production lines.

[0051] The application also provides a vehicle-mounted display screen surface defect detection device, which refers to Figure 6 The vehicle-mounted display screen surface defect detection device comprises: A linear array image acquisition module 10 is configured to drive a linear array camera to sample and take a picture when the display screen to be detected is located in a first detection area, so as to obtain a first display screen image.

[0052] A distance acquisition module 20 is configured to acquire a real-time moving distance of the display screen to be detected on the conveying device.

[0053] A planar array image acquisition module 30 is configured to drive a planar array camera to sample and take a picture according to the real-time moving distance, so as to obtain a second display screen image.

[0054] A defect detection module 40 is configured to perform display screen defect detection on the first display screen image and the second display screen image by using a trained display screen defect detection model, so as to obtain a defect detection result.

[0055] A defect marking module 50 is configured to drive a circular laser to mark a defect area of the display screen to be detected according to the defect detection result.

[0056] The application provides a vehicle-mounted display screen surface defect detection device, which comprises at least one processor and a memory in communication connection with the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the vehicle-mounted display screen surface defect detection method in the above embodiment one.

[0057] Reference is made to Figure 7 which shows a structural schematic diagram of a vehicle-mounted display screen surface defect detection device suitable for implementing the embodiments of the application. The vehicle-mounted display screen surface defect detection device in the embodiments of the application can include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Multimedia Player), vehicle-mounted terminals (for example, vehicle-mounted navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. Figure 7 The vehicle-mounted display screen surface defect detection device shown is only an example, and should not bring any limitation to the functions and use range of the embodiments of the application.

[0058] As Figure 7As shown, the vehicle-mounted display screen surface defect detection device can include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. Various programs and data required for the operation of the vehicle-mounted display screen surface defect detection device are also stored in the RAM 1004. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the vehicle-mounted display screen surface defect detection device to communicate wirelessly or by wire with other devices to exchange data. Although the vehicle-mounted display screen surface defect detection device with various systems is shown in the figure, it should be understood that all the systems shown are not required to be implemented or possessed. More or fewer systems can be alternatively implemented or possessed.

[0059] In particular, according to embodiments of the present disclosure, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of the embodiments of the present disclosure are performed.

[0060] The vehicle-mounted display screen surface defect detection device provided by the present disclosure adopts the vehicle-mounted display screen surface defect detection method in the above embodiments, and can solve the technical problem of vehicle-mounted display screen surface defect detection. Compared with the prior art, the vehicle-mounted display screen surface defect detection device provided by the present disclosure has the same beneficial effects as the vehicle-mounted display screen surface defect detection method provided by the above embodiments, and other technical features in the vehicle-mounted display screen surface defect detection device are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0061] It should be understood that various parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the above description of embodiments, specific features, structures, materials or characteristics can be combined in any appropriate manner in any one or more embodiments or examples.

[0062] The above description is merely illustrative of the application and is not intended to limit the scope of the application. Any variations and modifications that can be made by any person skilled in the art within the spirit and scope of the application are intended to be encompassed by the application. The scope of the application is defined by the appended claims.

[0063] The application provides a computer readable storage medium having computer readable program instructions (i.e. computer programs) stored thereon, the computer readable program instructions being used to execute the vehicle-mounted display screen surface defect detection method in the above-described embodiments.

[0064] The computer readable storage medium provided by the application may, for example, be a U disk, but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system or device, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system or device. The program code contained on the computer readable storage medium can be transmitted by any appropriate medium, including but not limited to electrical wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0065] The above computer readable storage medium can be included in the vehicle-mounted display screen surface defect detection device; or can exist separately and not be assembled into the vehicle-mounted display screen surface defect detection device.

[0066] The computer readable storage medium described above carries one or more programs, when the one or more programs are executed by the vehicle-mounted display screen surface defect detection device, the vehicle-mounted display screen surface defect detection device is caused to: vehicle-mounted display screen surface defect detection.

[0067] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0068] The flow diagrams and the block diagrams in the drawings are illustrations of architectures, functionalities, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0069] The modules involved in the embodiments of the present application can be implemented in software or in hardware. In some cases, the name of the module does not constitute a limitation on the module itself.

[0070] The readable storage medium provided by the application is a computer readable storage medium, which stores computer readable program instructions (i.e. computer programs) for executing the vehicle display screen surface defect detection method described above, and can solve the technical problem of vehicle display screen surface defect detection. Compared with the prior art, the computer readable storage medium provided by the application has the same beneficial effects as the vehicle display screen surface defect detection method provided by the above-mentioned embodiments, and will not be repeated here.

[0071] The application also provides a computer program product comprising a computer program, which, when executed by a processor, implements the steps of the vehicle display screen surface defect detection method as described above.

[0072] The computer program product provided by the application can solve the technical problem of vehicle display screen surface defect detection. Compared with the prior art, the computer program product provided by the application has the same beneficial effects as the vehicle display screen surface defect detection method provided by the above-mentioned embodiments, and will not be repeated here.

[0073] The above-mentioned is only part of the embodiments of the application, and does not limit the patent scope of the application, and any equivalent structural transformation, direct / indirect application in other related technical fields within the technical concept of the application, and the contents of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A combined vehicle-mounted display screen surface defect detection device, characterized in that, The combined vehicle-mounted display screen surface defect detection device at least includes an image acquisition device, a conveying structure, a circular laser, and a control module, the image acquisition device and the circular laser are located above the conveying structure, and the image acquisition device is arranged at a first detection area of the conveying structure, and the circular laser is arranged at a second detection area of the first detection area along the conveying direction of the conveying structure; The conveying structure is used for conveying a display screen to be detected to the first detection area for defect detection or conveying the display screen to be detected to the second detection area for defect position marking; The image acquisition device is used for acquiring a display screen image of the display screen to be detected when the display screen to be detected is conveyed into the first detection area, and sending the display screen image to the control module; The control module is used for performing defect detection on the received display screen image, and driving the operation of the circular laser according to the defect detection result; The circular laser is used for generating a cylindrical laser to mark a defect area of the display screen to be detected.

2. The combined on-vehicle display screen surface defect detection device according to claim 1, characterized by, The image acquisition device includes: A machine body including at least five detection areas, the five detection areas including a first detection area and a second detection area, a third detection area, a fourth detection area, and a fifth detection area arranged in correspondence with four side faces of the first detection area respectively; A detection assembly including at least three line-scan cameras and at least four area-array cameras, one of the three line-scan cameras is installed at the first detection area, the other two line-scan cameras are installed at the fourth detection area and the fifth detection area respectively, and are arranged in a direction of approaching each other in a tilted manner, the four area-array cameras are divided into two area-array camera groups, the two area-array camera groups are arranged at the second detection area and the third detection area respectively, and the lenses of the two area-array camera groups are arranged in a tilted manner in a direction of approaching each other; and A light source assembly including at least four high-brightness area-array light sources, the four high-brightness area-array light sources are arranged in correspondence with the inner walls of the second detection area, the third detection area, the fourth detection area, and the fifth detection area respectively, and are located on a side away from the first detection area of the area-array cameras and the line-scan cameras.

3. The combined on-vehicle display screen surface defect detection device according to claim 2, characterized by, The machine body includes at least five detection surfaces, the five detection surfaces are divided into a middle detection surface and four circumferential detection surfaces located in correspondence with the front side, the rear side, the left side, and the right side of the middle detection surface, and the four circumferential detection surfaces are all arranged in a tilted downward manner away from the middle detection surface; The first detection area is formed in the middle detection surface, and the second detection area, the second detection area, the third detection area, and the fourth detection area are formed in the four circumferential detection surfaces respectively.

4. The combined on-vehicle display screen surface defect detection device according to claim 2, characterized by, The lowest position point of the first line-scan camera arranged at the first detection area, the highest position of the second line-scan camera arranged at the fourth detection area, and the highest position of the third line-scan camera arranged at the fifth detection area are flush.

5. The combined on-vehicle display screen surface defect detection device according to claim 4, characterized by, The second line-scan camera and the third line-scan camera are symmetrically arranged, and the tilt angles of the second line-scan camera and the third line-scan camera are arranged within 40° to 50°.

6. The combined on-vehicle display screen surface defect detection device according to claim 2, wherein The first area array camera group located at the second detection area and the second area array camera group located at the third detection area are symmetrically distributed.

7. The combined on-vehicle display screen surface defect detection device according to claim 2, characterized by, The highest position points of each area array camera, the highest position points of the second line-scan camera and the third line-scan camera are levelled.

8. The combined on-vehicle display screen surface defect detection device according to claim 2, characterized by, The tilt angle of each area array camera is arranged within 40° to 50°.

9. A method for detecting surface defects of a vehicle-mounted display screen, characterized in that, The vehicle-mounted display screen surface defect detection method is applied to the combined vehicle-mounted display screen surface defect detection device as claimed in any one of claims 1 to 8, and the vehicle-mounted display screen surface defect detection method comprises: When the display screen to be detected is located at the first detection area, driving the line array camera to sample and take a picture to obtain a first display screen image; Obtaining a real-time moving distance of the display screen to be detected on the conveying device; Driving the area array camera to sample and take a picture according to the real-time moving distance to obtain a second display screen image; Performing display screen defect detection on the first display screen image and the second display screen image through a trained display screen defect detection model to obtain a defect detection result; Driving the circular laser to mark a defect area of the display screen to be detected according to the defect detection result.

10. An apparatus for detecting surface defects of a display screen of a vehicle, characterized by comprising: The vehicle-mounted display screen surface defect detection device comprises: A line array image acquisition module configured to drive the line array camera to sample and take a picture when the display screen to be detected is located at the first detection area to obtain a first display screen image; A distance acquisition module configured to obtain a real-time moving distance of the display screen to be detected on the conveying device; An area array image acquisition module configured to drive the area array camera to sample and take a picture according to the real-time moving distance to obtain a second display screen image; A defect detection module configured to perform display screen defect detection on the first display screen image and the second display screen image through a trained display screen defect detection model to obtain a defect detection result; A defect marking module configured to drive the circular laser to mark a defect area of the display screen to be detected according to the defect detection result.

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