CN114034639A

CN114034639A - Method, system, device and medium for correcting panel detection device

Info

Publication number: CN114034639A
Application number: CN202111330156.2A
Authority: CN
Inventors: 毋勇; 杨松; 贾胡平
Original assignee: BOE Technology Group Co Ltd; Chengdu CEC Panda Display Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu CEC Panda Display Technology Co Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-02-11

Abstract

The application relates to a method, a system, a device and a medium for correcting panel detection equipment, wherein the method for correcting the panel detection equipment comprises the following steps: detecting the light source illumination of a panel detection device; if the light source illumination does not meet the preset illumination requirement condition, acquiring an original image gray scale and calibration information corresponding to the panel detection equipment; determining camera gain compensation information or light source compensation information of the panel detection equipment according to the original image gray scale and the calibration information; and correcting according to the camera gain compensation information or the light source compensation information to obtain a correction result of the panel detection equipment. The automatic compensation function is realized, the product quality monitoring can be effectively guaranteed, and the problem that the detection capability of the panel detection equipment is reduced due to the fact that the light source is weak is solved.

Description

Method, system, device and medium for correcting panel detection device

Technical Field

The embodiment of the application relates to the technical field of display, in particular to a method, a system, equipment and a medium for correcting panel detection equipment.

Background

Currently, liquid crystal displays are the leading product in the current display market. The main structure of the liquid crystal display is a liquid crystal panel, which comprises an array substrate, a color film substrate, a liquid crystal layer and the like.

In the production process of the liquid crystal panel, the automatic appearance inspection equipment is used as liquid crystal panel inspection equipment and is mainly used for inspecting poor appearance of the panel and poor polarization plate in the CUT process and the POL process. The CUT process is used as a process, and the main business of the CUT process is to CUT a large plate into panels; the POL process is a process in which a polarizer is attached to a panel. Specifically, the automatic appearance inspection equipment mainly depends on a backlight source for irradiation, reflected light enters a linear scanning camera to form a picture, then judgment is carried out according to the gray scale of an original image of the picture, and poor appearance is detected and distinguished through algorithm processing and identification. The illumination of the light source of the automatic visual inspection apparatus may vary due to the weakening of the light source. If the illumination of the light source changes, the brightness of the light source changes, and the gray scale of the original image changes, so that the gray scale of the original image is not matched with the inspection parameters of the automatic appearance inspection equipment, the inspection capability is reduced, batch omission or over inspection is caused, and the monitoring of the process quality is finally failed. Therefore, the worker needs to manually debug the light source brightness and the camera compensation value of the automatic appearance inspection device through software, and photograph the original image through the camera to judge whether the light source brightness meets the inspection requirement. However, effective monitoring and adjustment cannot be ensured in the process by manually debugging the light source brightness and the camera compensation value, and manual adjustment is tedious and time-consuming in operation, and is prone to failure in quality monitoring and has a large influence on productivity.

Disclosure of Invention

In view of the above, to solve the above technical problems or some technical problems, embodiments of the present application provide a method, a system, a device, and a medium for calibrating a panel detection device.

In a first aspect, an embodiment of the present application provides a method for correcting a panel detection device, including:

detecting the light source illumination of a panel detection device;

if the light source illumination does not meet the preset illumination requirement condition, acquiring an original image gray scale and calibration information corresponding to the panel detection equipment;

determining camera gain compensation information or light source compensation information of the panel detection equipment according to the original image gray scale and the calibration information;

and correcting according to the camera gain compensation information or the light source compensation information to obtain a correction result of the panel detection equipment.

In a possible implementation manner, before acquiring the original image gray scale and the calibration information corresponding to the panel detection device, the method further includes:

comparing the light source illumination with a preset first illuminance calibration degree;

if the light source illumination is greater than the first illuminance calibration degree, determining that the light source illumination meets a preset illumination requirement condition;

and if the light source illumination is smaller than or equal to the first illuminance calibration degree, determining that the light source illumination does not meet a preset illumination requirement condition.

In one possible embodiment, the calibration information includes a second illuminance calibration degree and gray scale calibration information, and the determining the camera gain compensation information or the light source compensation information of the panel inspection apparatus according to the original image gray scale and the calibration information includes:

comparing the light source illumination with a preset second illumination calibration degree, wherein the second illumination calibration degree is smaller than the first illumination calibration degree;

if the light source illumination is smaller than the second illumination calibration degree, determining light source compensation information of the panel detection equipment according to a difference value between the first illumination calibration degree and the original image gray scale;

and if the light source illumination is greater than or equal to a preset second illuminance calibration degree, determining camera gain compensation information of the panel detection equipment according to the original image gray scale and the gray scale calibration information.

In a possible implementation manner, the acquiring the original image gray scale and the calibration information corresponding to the panel detection device includes:

acquiring a second illuminance calibration degree corresponding to the preset panel detection equipment;

if the light source illumination is greater than or equal to a preset second illumination calibration degree, original image information acquired by an image acquisition device of the panel detection device is acquired;

and analyzing according to the original image information to obtain the original image gray scale.

In one possible embodiment, the determining the camera gain compensation information of the panel inspection apparatus according to the original image gray scale and the gray scale calibration information includes:

if the original image gray scale is greater than or equal to the first gray scale calibration value, determining the camera gain compensation information according to a gray scale difference value between the original image gray scale and the second gray scale calibration value;

if the original image gray scale is smaller than the first gray scale calibration value, determining first gain information according to a difference value between the first gray scale calibration value and the original image gray scale, determining second gain information according to a difference value between the second gray scale calibration value and the first gray scale calibration value, and performing accumulation processing according to the first gain information and the second gain information to obtain the camera gain compensation information.

In a possible embodiment, the determining the camera gain compensation information according to the gray scale difference between the original gray scale and the second gray scale calibration value includes:

determining a gray scale difference value between the original image gray scale and the second gray scale calibration value;

acquiring a corresponding preset first gain gray scale coefficient according to the gray scale difference value;

determining the camera gain compensation information based on the step value and the first gain grayscale coefficient.

In a possible embodiment, the determining first gain information according to the difference between the first gray scale calibration value and the original image gray scale includes:

determining the gray scale increasing quantity according to the difference value between the first gray scale calibration value and the original image gray scale;

and determining the first gain information based on the quotient of the gray scale increase number and a preset second gain gray scale coefficient.

In a possible implementation, the determining second gain information according to the difference between the second gray scale calibration value and the first gray scale calibration value includes:

determining the number of gray scale difference values according to the difference value between the second gray scale calibration value and the first gray scale calibration value;

and determining the second gain information based on the quotient of the gray scale difference value quantity and a preset first gain gray scale coefficient.

In a possible embodiment, performing a correction according to the camera gain compensation information or the light source compensation information to obtain a correction result of the panel detection apparatus includes:

adjusting the light source illumination of the panel detection equipment according to the light source compensation information to obtain a light source illumination correction result of the panel detection equipment; and/or the presence of a gas in the gas,

and adjusting the camera gain of the panel detection equipment according to the camera gain compensation information to obtain a camera gain correction result of the panel detection equipment.

In a second aspect, an embodiment of the present application provides a calibration system for a panel inspection apparatus, including:

the illumination induction module is used for detecting the illumination of a light source of the panel detection equipment;

the acquisition module is used for acquiring the original image gray scale and the calibration information corresponding to the panel detection equipment when the light source illumination does not meet the preset illumination requirement condition;

the compensation determining module is used for determining camera gain compensation information or light source compensation information of the panel detection equipment according to the original image gray scale and the calibration information;

and the equipment correction module is used for correcting according to the camera gain compensation information or the light source compensation information to obtain a correction result of the panel detection equipment.

In a possible embodiment, the calibration system of the panel detection device further comprises:

the illumination comparison module is used for comparing the illumination of the light source with a preset first illumination calibration degree; if the light source illumination is greater than the first illuminance calibration degree, determining that the light source illumination meets a preset illumination requirement condition; and if the light source illumination is smaller than or equal to the first illuminance calibration degree, determining that the light source illumination does not meet a preset illumination requirement condition.

In one possible embodiment, the calibration information includes a second illuminance calibration level and gray scale calibration information, and the compensation determining module includes:

the illumination comparison sub-module is used for comparing the light source illumination with a preset second illumination calibration degree, wherein the second illumination calibration degree is smaller than the first illumination calibration degree;

the light source compensation submodule is used for determining light source compensation information of the panel detection equipment according to a difference value between the first illuminance calibration degree and the original image gray scale when the light source illuminance is smaller than the second illuminance calibration degree;

and the gain compensation submodule is used for determining the camera gain compensation information of the panel detection equipment according to the original image gray scale and the gray scale calibration information when the light source illumination is greater than or equal to a preset second illuminance calibration degree.

In a third aspect, an embodiment of the present application provides a panel detection apparatus, including: a processor, and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the correction method of the panel detection apparatus according to any one of the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the calibration method of the panel detection apparatus according to any one of the first aspect.

The embodiment of the application provides a method, a system, a device and a medium for correcting a panel detection device, which are used for detecting the light source illumination of the panel detection device and acquiring the original image gray scale and the calibration information corresponding to the panel detection device when the light source illumination is not in accordance with the preset illumination requirement condition, so as to determine the camera gain compensation information or the light source compensation information of the panel detection device according to the acquired original image gray scale and the calibration information, and then correct the camera gain compensation information or the light source compensation information to obtain the correction result of the panel detection device, thereby realizing the automatic compensation function, effectively ensuring the product quality monitoring and solving the problem of the detection capability reduction of the panel detection device caused by the light source weakness.

Drawings

Fig. 1 is a flowchart illustrating steps of a calibration method for a panel inspection apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating a calibration process of a panel inspection apparatus according to an example of the present application;

FIG. 3 is a flowchart illustrating steps of a method for calibrating a panel inspection apparatus according to an alternative embodiment of the present disclosure;

fig. 4 is a block diagram of a calibration system of a panel detection apparatus according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In actual processing, the main factors influencing the brightness of the light source are the illuminance of the light source and the Gain value (Gain) of the camera. The self-illumination of the light source is usually 0-1000 Lux (Lux), and in the display industry such as liquid crystal panels, the production line is normally set at 700 Lux. The illumination parameter is set by software and then sent to a light source controller of the panel detection device for input, so that the illumination of the light source of the panel detection device is set to be 700 Lux. With the long-time operation of the light source, the illumination of the light source is attenuated, so that the actual illumination is not consistent with the required illumination of the panel detection device. If the illuminance of the light source is attenuated, the original image gray scale is reduced, so that the original image gray scale shot by the panel detection equipment is influenced, and the inspection capability of the panel detection equipment is reduced.

One of the core concepts of the embodiments of the present application is to provide a method for calibrating a panel detection device, where illumination of a light source of the panel detection device is detected, and when it is detected that the illumination of the light source does not meet a preset illumination requirement, original image gray scales and calibration information corresponding to the panel detection device are obtained, and camera gain compensation information or light source compensation information of the panel detection device is determined according to the obtained original image gray scales and calibration information, so that calibration can be performed according to the camera gain compensation information or light source compensation information, and a function of real-time monitoring and automatic compensation of illumination conditions of the light source is implemented, thereby solving a problem of reduced detection capability of the panel detection device due to light source weakness.

For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.

Referring to fig. 1, a flowchart illustrating steps of a calibration method of a panel inspection apparatus according to an embodiment of the present application is shown. In a specific implementation, the method for correcting the panel detection device provided in the embodiment of the present application may specifically include the following steps:

step 110, detecting the illumination of the light source of the panel detection device.

The illumination of the light source of the panel detection device may refer to the actual illumination of the light source of the panel detection device. Specifically, the light source illuminance of the panel detection device may be detected by a light source detection device such as a light source illuminance digital sensor, for example, the illuminance digital sensor may be added at a light source mechanism of the panel detection device to measure and check the illuminance of the light source, as shown in fig. 2, and the detected light source illuminance may be transmitted to the data analysis system as reported data in a data transmission manner, so that the data analysis system may determine whether the light source illuminance of the panel detection device meets a preset illuminance requirement condition based on the reported data after receiving the reported data, thereby achieving the purpose of monitoring the light source illuminance of the panel detection device in real time. It should be noted that the light source illumination digital sensor is used as a device for monitoring the illumination of the light source itself, and can send the light source brightness or light source illumination detected in real time to the data analysis system.

And 120, if the illuminance of the light source does not meet a preset illuminance requirement condition, acquiring an original image gray scale and calibration information corresponding to the panel detection device.

Specifically, when it is detected that the light source illuminance of the panel detection device does not meet a preset illuminance requirement condition, the embodiment of the present application may obtain a preset second illuminance calibration degree for the currently detected light source illuminance, so as to determine whether the light source illuminance of the panel detection device needs to be adjusted by comparing the currently detected light source illuminance with the preset second illuminance calibration degree; if the currently detected light source illuminance is smaller than the preset second illuminance calibration degree, it may be determined that the light source illuminance of the panel detection device needs to be adjusted, and then the obtained first illuminance calibration degree may be used as calibration information, so as to determine light source compensation information corresponding to the light source illuminance of the panel detection device according to the first illuminance calibration degree, that is, step 130 is executed; if the currently detected light source illuminance is greater than or equal to the preset second illuminance calibration degree, it may be determined that the light source illuminance of the panel detection device does not need to be adjusted, original image information acquired by an image acquisition device of the panel detection device and corresponding preset gray scale calibration information of the panel detection device may be acquired, and an original image gray scale corresponding to the panel detection device may be determined according to the original image information, so that camera gain compensation information corresponding to the panel detection device may be subsequently determined according to the original image gray scale and the acquired gray scale calibration information, that is, step 130 is executed.

Of course, in the embodiment of the present application, when the currently detected light source illuminance is equal to the preset second illuminance calibration degree, it may also be determined that the light source illuminance of the panel detection device is not required to be adjusted currently, and the original image information acquired by the image acquisition device of the panel detection device is acquired, so as to determine the original image gray scale according to the original image information, so that the camera gain of the panel detection device is adjusted according to the original image gray scale and the preset gray scale calibration information, and the purpose of automatically calibrating the panel detection device is achieved. The second illuminance calibration degree may be a minimum illuminance calibration threshold that is set in advance for panel detection, where the minimum threshold may be used to determine whether the illuminance of the light source of the panel detection apparatus needs to be adjusted, for example, the minimum threshold may be set to 650, and the like.

And step 130, determining camera gain compensation information or light source compensation information of the panel detection device according to the original image gray scale and the calibration information.

In specific implementation, in the embodiment of the present application, a illuminance calibration degree may be set in advance for panel detection to serve as a first illuminance calibration degree, and the first illuminance calibration degree may be a maximum illuminance calibration threshold set in advance for panel detection, and may be specifically used for determining whether the illuminance requirement condition detected by the panel detection device is met by the light source illuminance.

Specifically, after the original image gray scale and the calibration information corresponding to the panel detection device are acquired, the camera gain compensation information or the light source compensation information of the panel detection device may be determined according to a comparison result between the light source illuminance of the panel detection device and the second illuminance calibration degree in the calibration information. Specifically, when the light source illuminance of the panel detection device is smaller than the second illuminance calibration degree, the light source illuminance of the panel detection device can be determined to be adjusted, and then the light source compensation information of the panel detection device can be determined according to the difference value between the preset first illuminance calibration degree and the original image gray scale, so that the light source illuminance of the panel detection device can be adjusted according to the light source compensation information in the following process, and the purpose of correcting the light source illuminance of the panel detection device is achieved; when the light source illumination of the panel detection equipment is greater than the second illuminance calibration degree, the light source illumination of the panel detection equipment can be judged not to be adjusted, and the camera gain compensation information of the panel detection equipment is determined according to the gray scale calibration information in the original image gray scale and the calibration information, so that the camera gain of the panel detection equipment can be adjusted according to the camera gain compensation information in the following process, the light source brightness compensation can be carried out by adjusting the camera gain, and the purpose of correcting the camera gain of the panel detection equipment is achieved.

Further, the calibration information according to the embodiment of the present application may include a second illuminance calibration degree and gray scale calibration information, and the determining the camera gain compensation information or the light source compensation information of the panel inspection apparatus according to the original image gray scale and the calibration information may specifically include: comparing the light source illumination with a preset second illumination calibration degree, wherein the second illumination calibration degree is smaller than the first illumination calibration degree; if the light source illumination is smaller than the second illumination calibration degree, determining light source compensation information of the panel detection equipment according to a difference value between the first illumination calibration degree and the original image gray scale; and if the light source illumination is greater than or equal to a preset second illuminance calibration degree, determining camera gain compensation information of the panel detection equipment according to the original image gray scale and the gray scale calibration information.

And 140, correcting according to the camera gain compensation information or the light source compensation information to obtain a correction result of the panel detection equipment.

Specifically, after the light source compensation information of the panel detection device is determined, the light source illumination of the panel detection device can be adjusted according to the light source compensation information, so that the light source brightness can be automatically supplemented by adjusting the light source illumination, that is, the automatic compensation function is realized; after the camera gain compensation information of the panel detection equipment is determined, the camera gain of the panel detection equipment can be adjusted according to the camera gain compensation information, so that the brightness of the light source can be automatically supplemented by adjusting the camera gain of the panel detection equipment, the condition that the detection capability is reduced due to the fact that the light source is weakened can be avoided, and the product quality monitoring can be effectively guaranteed.

Further, in the embodiment of the present application, the performing a correction according to the camera gain compensation information or the light source compensation information to obtain a correction result of the panel detection device may specifically include: adjusting the light source illumination of the panel detection equipment according to the light source compensation information to obtain a light source illumination correction result of the panel detection equipment; and/or adjusting the camera gain of the panel detection equipment according to the camera gain compensation information to obtain a camera gain correction result of the panel detection equipment.

As an example of the present application, as shown in fig. 2, after a camera in a panel detection device captures an original image, the original image may be analyzed by an original image analysis system, for example, an average gray scale value in an inner area of the original image may be analyzed by the original image analysis system, and the average gray scale value in the inner area of the original image may be reported to a data transmission system as an original image gray scale corresponding to the panel detection device, so that the original image gray scale may be transmitted to the data analysis system by the data transmission system, so that the data analysis system may perform comprehensive analysis according to received digital information, obtain an illumination compensation value and a camera gain compensation value according to an actual situation, and may send the illumination compensation value and the camera gain compensation value to a light source control system for automatic compensation by a data transmission manner. The illumination compensation value is used as light source compensation information, and the light source control system can transmit the illumination compensation value as automatic parameter compensation information to the light source controller, so that the light source controller can automatically adjust the illumination of the light source according to the illumination compensation value to obtain a light source illumination correction result of the panel detection equipment; similarly, the camera Gain compensation value is used as camera Gain compensation information, and the light source control system can transmit the camera Gain compensation value to the light source controller, so that the light source controller can automatically adjust the Gain of the camera according to the camera Gain compensation value to obtain a camera Gain correction result of the panel detection device, and the purpose of performing fine adjustment compensation on the camera Gain value according to the original image gray scale is achieved. Therefore, the light source control system in the example of the application serves as an execution block, and the automatic parameter compensation information is transmitted to the light source controller or the camera to adjust the illumination of the light source or the gain value of the camera, so that the brightness of the light source is adjusted, the problem of capacity Loss (Loss) caused by manual light adjustment of workers in the prior art is solved, the light source condition required by detection of different products and components can be met, and the quality monitoring of the products can be effectively guaranteed.

The original image analysis system in this example may be configured by inspection software and an original image; the checking software can analyze the average gray scale of the display area of the original image shot by the camera in real time to obtain a gray scale value for representing the gray scale of the original image, and the gray scale value can be sent to the data analysis system through the data transmission system; the data transmission system is mainly used for transmitting the numerical information of the sensor and the gray scale information of the original image to the data analysis system, for example, transmitting the illumination of the light source detected by the illumination digital sensor to the data analysis system, and/or transmitting the gray scale of the original image obtained by the analysis of the original image analysis system to the data analysis system; the data analysis system mainly carries out comprehensive analysis on the digital information, sends the brightness compensation information to the light source controller system and sends the gain value of the camera to the camera setting parameters, and realizes automatic compensation of the light source brightness.

In actual processing, the embodiment of the application can determine whether the current light source illuminance of the panel detection device meets a preset illuminance requirement condition by comparing the detected light source illuminance with a preset first illuminance calibration degree, so that when the detected light source illuminance is less than or equal to the first illuminance calibration degree, it can be determined that the current light source illuminance of the panel detection device does not meet the preset illuminance requirement condition, and the light source illuminance or the camera gain of the panel detection device needs to be adjusted to achieve the purpose of correcting the panel detection device. Further, the method for correcting the panel detection device according to the embodiment of the present application, before acquiring the original image gray scale and the calibration information corresponding to the panel detection device, may further include: comparing the light source illumination with a preset first illuminance calibration degree; if the light source illumination is greater than the first illuminance calibration degree, determining that the light source illumination meets a preset illumination requirement condition; and if the light source illumination is smaller than or equal to the first illuminance calibration degree, determining that the light source illumination does not meet a preset illumination requirement condition.

On the basis of the foregoing embodiment, optionally, the acquiring the original image gray scale and the calibration information corresponding to the panel detection device in the embodiment of the present application may specifically include: acquiring a second illuminance calibration degree corresponding to the preset panel detection equipment; if the light source illumination is greater than or equal to a preset second illumination calibration degree, original image information acquired by an image acquisition device of the panel detection device is acquired; and analyzing according to the original image information to obtain the original image gray scale. Specifically, the embodiment of the present application can obtain a second illuminance calibration level preset for the panel inspection apparatus when the illuminance of the light source does not meet the preset illuminance requirement condition, and comparing the currently detected light source illumination of the panel inspection apparatus with the second light illumination calibration, so as to determine whether to acquire the original image information acquired by the image acquisition equipment of the panel detection equipment according to the comparison result, so that when the currently detected light source illuminance of the panel detection device is greater than or equal to the second illuminance calibration degree, obtaining the original image information collected by the image collecting device of the panel detecting device, such as obtaining the original image information shot by the camera of the panel detecting device, the original image information can be analyzed through an original image analysis system of the panel detection device to obtain an original image gray scale corresponding to the panel detection device, and the original image gray scale can include an average gray scale value of an area in the original image of the original image information; when the currently detected light source illuminance of the panel detection device is smaller than the second illuminance calibration degree, the original image information may not be analyzed by the original image analysis system of the panel detection device, and the first illuminance calibration degree preset for the panel detection device is directly obtained, so as to determine the first illuminance calibration degree according to the first illuminance calibration degree and determine the light source compensation information corresponding to the light source illuminance of the panel detection device.

Referring to fig. 3, a flowchart illustrating steps of a calibration method of a panel inspection apparatus according to an alternative embodiment of the present application is shown. The correction method of the panel detection device provided by the embodiment of the application specifically comprises the following steps:

step 310, detecting the illumination of the light source of the panel detection device.

Step 320, comparing the light source illuminance with a preset first illuminance calibration degree.

Step 330, if the illuminance of the light source is less than or equal to the first illuminance calibration degree, obtaining a second illuminance calibration degree preset by the panel detection device.

Step 340, comparing the light source illuminance with a preset second illuminance calibration degree, wherein the second illuminance calibration degree is smaller than the first illuminance calibration degree.

Specifically, after the light source illuminance of the panel detection device is detected, the detected light source illuminance can be compared with the preset first illuminance calibration degree, so as to determine whether the light source illuminance meets the preset illuminance requirement condition according to a comparison result between the light source illuminance and the preset first illuminance calibration degree. If the light source illumination is greater than the first illuminance calibration degree, the light source illumination can be determined to meet the preset illumination requirement condition; if the light source illumination is less than or equal to the first illumination calibration degree, it can be determined that the light source illumination does not meet the preset illumination requirement condition, and then the light source illumination can be compared with the preset second illumination calibration degree, so as to determine whether to adjust the light source illumination according to the comparison result between the light source illumination and the preset second illumination calibration degree. Specifically, when the light source illuminance is less than the second illuminance calibration degree, it may be determined that the illuminance of the panel detection device needs to be adjusted, and then step 350 and step 360 are performed to automatically adjust the light source illuminance of the panel detection device, thereby implementing the function of automatically supplementing the light source brightness; when the illuminance of the light source is greater than or equal to the second illuminance calibration degree, for example, when the illuminance of the light source is within the range from the second illuminance calibration degree to the first illuminance calibration degree, it may be determined that the illuminance of the panel detection apparatus is not adjusted, and then the process jumps to step 370 to be executed, so that the camera gain of the panel detection apparatus is adjusted by executing

steps

370 and 380, thereby implementing the function of automatically supplementing the luminance of the light source.

Step 350, if the light source illuminance is smaller than the second illuminance calibration degree, determining light source compensation information of the panel detection device according to a difference value between the first illuminance calibration degree and the original image gray scale.

And 360, adjusting the light source illuminance of the panel detection equipment according to the light source compensation information to obtain a light source illuminance correction result of the panel detection equipment.

Specifically, in the embodiment of the application, when the detected light source illuminance is smaller than the preset second illuminance calibration degree, the light source illuminance compensation value corresponding to the light source illuminance can be calculated through the preset first illuminance calibration degree to serve as the light source compensation information and be sent to the light source control system of the panel detection device, so that the light source illuminance is adjusted by the light source control system according to the light source compensation information, that is, the obtained light source illuminance compensation value is sent to the light source control system to be compensated, and the light source illuminance correction result of the panel detection device is obtained. The light source illuminance correction result of the panel detection device may refer to adjusting the corrected light source illuminance.

Step 370, if the light source illuminance is greater than or equal to the second illuminance calibration degree, determining camera gain compensation information of the panel inspection device according to the original image gray scale and the gray scale calibration information.

Specifically, in the embodiment of the present application, when the detected light source illuminance is greater than or equal to the preset second illuminance calibration degree, the original image information acquired by the image acquisition device of the panel detection device may be acquired, and may be analyzed according to the acquired original image information to obtain an original image gray scale corresponding to the original image gray scale, and then, gray scale calibration information may be acquired for the original image gray scale to determine the camera gain compensation information of the panel detection device according to the original image gray scale and the gray scale calibration information.

Optionally, the gray scale calibration information in this embodiment of the application may include a first gray scale calibration value and a second gray scale calibration value, and the determining the camera gain compensation information of the panel inspection apparatus according to the original image gray scale and the gray scale calibration information may specifically include: if the original image gray scale is greater than or equal to the first gray scale calibration value, determining the camera gain compensation information according to a gray scale difference value between the original image gray scale and the second gray scale calibration value; if the original image gray scale is smaller than the first gray scale calibration value, determining first gain information according to a difference value between the first gray scale calibration value and the original image gray scale, determining second gain information according to a difference value between the second gray scale calibration value and the first gray scale calibration value, and performing accumulation processing according to the first gain information and the second gain information to obtain the camera gain compensation information.

The first gray scale calibration value may be determined according to a corresponding mapping relationship between the original image gray scale and the camera gain, for example, if the original image gray scale is greater than or equal to 30, the gray scale is increased by 5 every time the camera gain value is increased by 1, and if the original image gray scale is less than 30, the gray scale is increased by 2 every time the camera gain value is increased by 1, the first gray scale calibration value may be set to 30.

The second gray scale calibration value may be set according to the optimal gray scale of the display area, for example, in the case that the gray scale range is 0 to 255, if the optimal gray scale of the display area is 70 through experiments and machine debugging tests, the second gray scale calibration value may be set to 70, and the specific numerical value of the second gray scale calibration value is not limited in the embodiment of the present application.

Further, in the embodiment of the present application, the determining the camera gain compensation information according to the gray scale difference between the original gray scale and the second gray scale calibration value may specifically include: determining a gray scale difference value between the original image gray scale and the second gray scale calibration value; acquiring a corresponding preset first gain gray scale coefficient according to the gray scale difference value; determining the camera gain compensation information based on the step value and the first gain grayscale coefficient. The first gain gray scale coefficient may be a numerical value that the gray scale increases every time the camera gain value increases by 1 when the gray scale of the original image is greater than or equal to the first gray scale calibration value, and may be 5, for example, which is not limited in the embodiment of the present application.

For example, in the case where the first gray scale calibration value is 30 and the second gray scale calibration value is 70, if the original gray scale X is greater than or equal to the first gray scale calibration value, that is, if X is greater than or equal to 3, the original gray scale X may be subtracted from the second gray scale calibration value 70 to obtain a gray scale difference between the original gray scale and the second gray scale calibration value, that is, the gray scale difference between the original gray scale and the second gray scale calibration value is (70-X), and if the corresponding preset first gain gray scale coefficient is 5 is obtained for the gray scale difference (70-X), the calculated camera gain value Y may be determined as the camera gain compensation information according to the formula Y of (70-X)/5 based on the gray scale difference (70-X) and the first gain gray scale coefficient 5.

In an optional embodiment, the determining first gain information according to the difference between the first gray scale calibration value and the original image gray scale in the embodiment of the present application specifically includes: determining the gray scale increasing quantity according to the difference value between the first gray scale calibration value and the original image gray scale; and determining the first gain information based on the quotient of the gray scale increase number and a preset second gain gray scale coefficient. Further, the determining second gain information according to the difference between the second gray scale calibration value and the first gray scale calibration value specifically includes: determining the number of gray scale difference values according to the difference value between the second gray scale calibration value and the first gray scale calibration value; and determining the second gain information based on the quotient of the gray scale difference value quantity and a preset first gain gray scale coefficient. The second gain gray scale coefficient may be a numerical value that the gray scale increases every time the camera gain value increases by 1, for example, 2, when the original image gray scale is smaller than the first gray scale calibration value, which is not limited in the embodiment of the present application.

For example, in combination with the above example, when the original image gray level X is smaller than the first gray level calibration value 30, that is, when X is smaller than 30, the original image gray level X may be subtracted from the first gray level calibration value 30 to obtain a difference (30-X) between the first gray level calibration value and the original image gray level, and the difference (30-X) between the first gray level calibration value and the original image gray level may be used as the gray level increase number, so as to determine the first gain information by taking the quotient of the gray level increase number and the preset second gain gray level coefficient as (30-X)/2, and thus may determine the first gain information by taking the quotient of the gray level increase number and the preset second gain gray level coefficient as (30-X)/2; and, a difference (70-30) between the second gray scale calibration value 70 and the first gray scale calibration value 30 may be determined as a gray scale difference number to determine the second gain information based on a quotient of the gray scale difference number and a preset first gain gray scale coefficient, such as in the case where the first gain gray scale coefficient is 5, the quotient of the gray scale difference number and the preset first gain gray scale coefficient is (70-30)/5, so that a value of (70-30)/5 may be determined as the second gain information; the first gain information and the second gain information are thus subjected to an accumulation process according to the formula Y ═ 30-X)/2+ (70-30)/5, to determine the calculated camera gain value Y as camera gain compensation information.

And 380, adjusting the camera gain of the panel detection equipment according to the camera gain compensation information to obtain a camera gain correction result of the panel detection equipment.

Specifically, in the embodiment of the present application, when the illuminance of the light source is greater than or equal to the preset second illuminance calibration degree, the camera Gain compensation value is calculated according to the original image gray scale and the gray scale calibration information, and is used as the camera Gain compensation information and sent to the light source control system of the panel detection device for compensation, that is, the camera Gain value is subjected to fine tuning compensation according to the original image gray scale, so as to obtain the camera Gain correction result of the panel detection device. The camera gain correction result of the panel detection device may refer to adjusting the corrected camera gain value.

As an example of the present application, in the case that the light source illuminance standard is 700 and the gray scale is reduced by 5 every time the light source illuminance is reduced by 100, before the light source illuminance standard is introduced into the correction system of the panel inspection apparatus, the light source illuminance setting and the light source illuminance digital sensor value are uniformly compared and calibrated to 700, the gray scale of the original image display area is set to 70, that is, the preset first illuminance calibration value is set to 700 in advance, and the preset second gray scale calibration value is set to 70. If the preset second illuminance calibration degree is set to 650, the detected light source illuminance L1 can be compared with the preset first illuminance calibration degree 700 and the second illuminance calibration degree 650, so that the real-time monitoring of the light source illuminance condition of the panel detection device and the analysis of the original image gray scale are realized, and the automatic compensation function of the light source brightness and the camera parameters is realized.

Specifically, when the actual sensing value of the light source illuminance L1 of the panel inspection apparatus is detected to be within a range of 650-700, it can be determined that the gray scale of the original image is lower than the second gray scale calibration value 70, and the correction system of the panel inspection apparatus can determine that the light source illuminance is not adjusted, and then the light source illuminance compensation can be performed by adjusting the camera Gain value. Specifically, the gray scale value X obtained by the original image analysis system may be compared with the first gray scale calibration value 30, and if the gray scale value X obtained by the original image analysis system is smaller than the first gray scale calibration value 30, the camera gain value compensation value Y may be calculated according to the formula Y of (30-X)/2+ (70-30)/5; if the gray-scale value X obtained by the original image analysis system is greater than 30, the camera gain compensation value Y can be calculated according to the formula Y ═ 70-X)/5. Subsequently, the camera Gain compensation value Y may be sent to the light source control system through a data transmission manner, so that the light source control system may implement light source illumination compensation through a Gain value increasing variable based on the camera Gain compensation value Y.

When the light source illuminance L1 of the panel inspection apparatus is detected to be lower than 650, the calibration system of the panel inspection apparatus may determine that the illuminance of the light source needs to be adjusted, and then may calculate the light source illuminance compensation value L according to the light source illuminance value transmitted by the illuminance sensor, for example, may calculate the light source illuminance compensation value L according to the formula L-700-L1, and may send the calculated light source illuminance compensation value L to the light source control system for compensation, and then may perform fine adjustment compensation on the camera Gain value according to the original image gray scale.

For example, when the light source illuminance L1 is 680, the camera Gain value is 16, and the original gray scale is 64, it may be determined that the light source illuminance does not need to be compensated, the camera Gain compensation value Y may be calculated to be 1.2 according to the formula Y ═ 70-64)/5, and the camera Gain compensation value 1.2 may be transmitted to the light source control system, so that the light source control system may adjust the camera Gain based on the camera Gain compensation value 1.2, that is, the actual input value of the camera Gain is 17.2, thereby realizing the automatic compensation.

To sum up, the embodiment of the present application obtains the original image gray scale and the calibration information corresponding to the panel detection device by detecting the light source illuminance of the panel detection device, and determines the camera gain compensation information or the light source compensation information of the panel detection device according to the obtained original image gray scale and the calibration information when detecting that the light source illuminance does not conform to the preset illuminance requirement condition, so that the correction can be performed according to the camera gain compensation information or the light source compensation information, thereby implementing the real-time monitoring and automatic compensation functions for the light source illuminance condition, thereby solving the problem of the detection capability reduction of the panel detection device due to the weakening of the light source, avoiding the productivity Loss caused by the manual light adjustment of personnel, and satisfying the requirement light source conditions for detecting different products and components, and effectively ensuring the product quality monitoring.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the embodiments.

Further, the embodiment of the application also provides a correction system of the panel detection equipment. As shown in fig. 4, the calibration system 400 of the panel detection apparatus provided in the embodiment of the present application may include the following modules:

an illuminance sensing module 410 for detecting the illuminance of the light source of the panel detection device;

the obtaining module 420 is configured to obtain an original image gray scale and calibration information corresponding to the panel detection device when the illuminance of the light source does not meet a preset illuminance requirement condition;

a compensation determining module 430, configured to determine camera gain compensation information or light source compensation information of the panel detection device according to the original image gray scale and the calibration information;

and an apparatus calibration module 440, configured to calibrate according to the camera gain compensation information or the light source compensation information, so as to obtain a calibration result of the panel detection apparatus.

Optionally, the calibration system of the panel detection apparatus further includes: and an illumination comparison module. The illumination comparison module is used for comparing the illumination of the light source with a preset first illumination calibration degree; if the light source illumination is greater than the first illuminance calibration degree, determining that the light source illumination meets a preset illumination requirement condition; and if the light source illumination is smaller than or equal to the first illuminance calibration degree, determining that the light source illumination does not meet a preset illumination requirement condition. For example, the illuminance comparison module is specifically configured to compare the light source illuminance with a preset first illuminance calibration degree before the acquisition module 420 acquires the original image gray scale and the calibration information corresponding to the panel detection device; when the light source illumination is greater than the first illuminance calibration degree, determining that the light source illumination meets a preset illumination requirement condition; when the light source illuminance is less than or equal to the first illuminance calibration degree, it is determined that the light source illuminance does not meet a preset illuminance requirement condition, and then the obtaining module 420 is triggered to obtain an original image gray scale and calibration information corresponding to the panel detection device.

Optionally, the calibration information in this embodiment of the application may include the second illuminance calibration degree and the gray scale calibration information, and the compensation determining module 430 may include the following sub-modules:

Optionally, the obtaining module 420 may include the following sub-modules:

the second illuminance calibration degree acquisition submodule is used for acquiring a second illuminance calibration degree preset by the panel detection device;

the original image information acquisition module is used for acquiring original image information acquired by an image acquisition device of the panel detection device when the light source illumination is greater than or equal to a preset second illuminance calibration degree;

and the original image analysis sub-module is used for analyzing according to the original image information to obtain the original image gray scale.

Optionally, the gray scale calibration information in this embodiment of the application includes a first gray scale calibration value and a second gray scale calibration value, and the compensation determining module 430 includes:

the first camera gain compensation sub-module is used for determining the camera gain compensation information according to the gray scale difference value between the original image gray scale and the second gray scale calibration value when the original image gray scale is greater than or equal to the first gray scale calibration value;

and the second camera gain compensation sub-module is used for determining first gain information according to a difference value between the first gray scale calibration value and the original image gray scale when the original image gray scale is smaller than the first gray scale calibration value, determining second gain information according to a difference value between the second gray scale calibration value and the first gray scale calibration value, and performing accumulation processing according to the first gain information and the second gain information to obtain the camera gain compensation information.

Optionally, the first camera gain compensation sub-module includes:

a gray scale difference value determining unit, configured to determine a gray scale difference value between the original image gray scale and the second gray scale calibration value;

the first gain gray scale coefficient unit is used for acquiring a corresponding preset first gain gray scale coefficient aiming at the gray scale difference value;

a first camera gain compensation subunit configured to determine the camera gain compensation information based on the level difference value and the first gain grayscale coefficient.

Optionally, the second camera gain compensation sub-module includes:

the gray scale increasing number unit is used for determining the gray scale increasing number according to the difference value between the first gray scale calibration value and the original image gray scale;

a first gain information unit for determining the first gain information based on a quotient of the gray scale increase number and a preset second gain gray scale coefficient;

a gray scale difference value number unit for determining the number of gray scale difference values according to the difference value between the second gray scale calibration value and the first gray scale calibration value;

and the second gain information unit is used for determining the second gain information based on the quotient of the gray scale difference value quantity and a preset first gain gray scale coefficient.

Optionally, the device calibration module 440 includes:

the light source illumination correction submodule is used for adjusting the light source illumination of the panel detection equipment according to the light source compensation information to obtain a light source illumination correction result of the panel detection equipment; and/or the presence of a gas in the gas,

and the camera gain correction submodule is used for adjusting the camera gain of the panel detection equipment according to the camera gain compensation information to obtain a camera gain correction result of the panel detection equipment.

It should be noted that the calibration system of the panel detection apparatus provided above can execute the calibration method of the panel detection apparatus provided in any embodiment of the present application, and has corresponding functions and beneficial effects of the execution method.

In specific implementation, the correction system of the panel detection device can be applied to panel detection devices such as automatic appearance inspection devices of liquid crystal panels, so that the panel detection device can realize real-time monitoring of illumination conditions of a light source and analysis of original image gray scales, and can perform an automatic compensation function on the brightness of the light source and camera parameters according to an analysis result, thereby avoiding the situation that the inspection capability is reduced due to the fact that the light source is weakened, effectively ensuring product quality monitoring, realizing automatic adjustment of the illumination of the light source and automatic adjustment of the gain of a camera, further realizing automatic compensation of the brightness of the light source of the panel detection device, solving the problem of capacity Loss caused by the fact that personnel manually adjust the light source in the prior art, and simultaneously meeting the light source and gray scale conditions of different product and part detection requirements. Further, an embodiment of the present application further provides a panel detection apparatus, including: a processor, and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the method of calibrating a panel inspection apparatus as described in any one of the above method embodiments.

The present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the calibration method of the panel detection apparatus according to any one of the above method embodiments.

It should be noted that, for the system, the device, and the storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiments.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A method for calibrating a panel inspection apparatus, comprising:

detecting the light source illumination of a panel detection device;

2. The method for calibrating panel inspection equipment according to claim 1, wherein before acquiring the original image gray scale and calibration information corresponding to the panel inspection equipment, the method further comprises:

3. The method of claim 2, wherein the calibration information includes a second illuminance calibration level and gray scale calibration information, and the determining the camera gain compensation information or the light source compensation information of the panel inspection apparatus according to the original gray scale and the calibration information comprises:

4. The method for calibrating a panel inspection apparatus according to claim 2 or 3, wherein the acquiring of the original image gray scale and calibration information corresponding to the panel inspection apparatus includes:

5. The method of claim 3, wherein the gray calibration information comprises a first gray calibration value and a second gray calibration value, and the determining the camera gain compensation information of the panel inspection apparatus according to the original gray scale and the gray calibration information comprises:

6. The method of claim 5, wherein the determining the camera gain compensation information according to the gray scale difference between the original gray scale and the second gray scale calibration value comprises:

7. The method of claim 5, wherein the determining first gain information according to the difference between the first gray scale calibration value and the original gray scale comprises:

8. The method of claim 5, wherein said determining second gain information from a difference between the second gray scale calibration value and the first gray scale calibration value comprises:

9. The method according to any one of claims 1 to 3, wherein the performing the correction according to the camera gain compensation information or the light source compensation information to obtain the correction result of the panel detection apparatus comprises:

10. A calibration system for a panel inspection apparatus, comprising:

11. The system of claim 10, further comprising:

12. The system of claim 11, wherein the calibration information comprises a second illuminance calibration level and a gray scale calibration information, and the compensation determining module comprises:

13. A panel inspection apparatus, comprising: a processor, and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the correction method of the panel detecting apparatus according to any one of claims 1 to 9.

14. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements the calibration method of the panel inspection apparatus according to any one of claims 1 to 9.