CN117611550A - Defect compensation method, device, equipment and storage medium - Google Patents
Defect compensation method, device, equipment and storage medium Download PDFInfo
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Abstract
The application provides a defect compensation method, a device, equipment and a storage medium, wherein the defect compensation method comprises the following steps: responding to a defect compensation request aiming at target display equipment, and driving the target display equipment to display a preset test image; the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image; and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment. According to the technical scheme, the visual angle compensation mapping table corresponding to the shooting module can be obtained to carry out visual angle correction on the shooting image, and defect compensation is carried out on the display equipment according to the corrected shooting image, so that the defect compensation effect is improved, and the compensation efficiency is effectively improved.
Description
Technical Field
The present disclosure relates to the field of video processing technologies, and in particular, to a defect compensation method, device, apparatus, and storage medium.
Background
Currently, with the improvement of the process and technical level of display devices, new backlight display architectures such as MiniLED backlight are gradually popularized in various display devices, however, due to the influence of manufacturing and assembly processes, such new backlight display architectures may cause display devices to have more or less display uniformity problems, i.e. Mura defects. The existing method for correcting the Mura defect is to collect data of display equipment in a darkroom through a camera so as to correct the Mura. However, as the device size of the display device is continuously increased, when the camera collects data, the data collection requirement can be met only by increasing the shooting angle without increasing the shooting distance. However, the existing camera visual angle compensation relies on manual correction before each data acquisition, which consumes time and labor cost and cannot be applied to Demura correction for the production line of the display device in a large scale.
Disclosure of Invention
The embodiment of the application provides a defect compensation method, device, equipment and storage medium, which aim to solve the technical problem that the demux correction effect is poor because the demux visual angle cannot be automatically corrected quickly in the prior art.
In one aspect, an embodiment of the present application provides a defect compensation method, including the steps of:
responding to a defect compensation request aiming at target display equipment, and driving the target display equipment to display a preset test image;
the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment.
In a possible implementation manner of the present application, before performing the angle of view correction on the test captured image according to the angle of view compensation mapping table corresponding to the capturing module to obtain the target captured image, the method further includes:
responding to a visual angle compensation request, and displaying a target compensation image on preset display equipment, wherein the target compensation image is an image comprising a plurality of preset display compensation areas;
acquiring an initial shooting image corresponding to the target compensation image, and extracting features of the initial shooting image to obtain regional feature data of a display compensation region in the initial shooting image;
Deducing the verification feature data in the regional feature data according to the reference feature data in the regional feature data to obtain a view angle compensation mapping table corresponding to the shooting module.
In one possible implementation manner of the present application, the feature extracting the captured image to obtain the region feature data of the display compensation region in the captured image includes:
acquiring angular point information of the initial shooting image, and cutting the initial shooting image according to angular point coordinates in the angular point information to obtain a cut initial shooting image;
geometrically correcting the cut initial shooting image according to the relative positions of the corner points in the corner point information to obtain a corrected shooting image;
and acquiring feature extraction templates corresponding to the display compensation areas, and carrying out feature extraction on the corrected shooting image based on the feature extraction templates to obtain area feature data of the display compensation areas.
In one possible implementation manner of the present application, the feature extraction is performed on the rectified captured image based on the feature extraction template to obtain region feature data of each display compensation region, where the method includes:
Cutting the corrected shooting image based on each characteristic extraction template to obtain a compensation area image of the corrected shooting image;
and extracting brightness characteristic data in each compensation area image to obtain area characteristic data of each display compensation area.
In one possible implementation manner of the present application, the display compensation area includes at least one display verification area, and a first reference area and a second reference area;
the deriving the verification feature data in the regional feature data according to the reference feature data in the regional feature data to obtain the view angle compensation mapping table corresponding to the shooting module, including:
acquiring a first reference feature corresponding to the first reference region and a second reference feature corresponding to the second reference region in the region feature data;
deducing the verification feature data of each display verification region according to the first reference features to obtain a first view angle compensation mapping table;
deducing the verification feature data of each display verification region according to the second reference features to obtain a second view angle compensation mapping table;
and determining a view angle compensation mapping table corresponding to the shooting module according to the first view angle compensation mapping table and the second view angle compensation mapping table.
In one possible implementation manner of the present application, the determining, according to the first view angle compensation mapping table and the second view angle compensation mapping table, the view angle compensation mapping table corresponding to the shooting module includes:
fusing the first view angle compensation mapping table and the second view angle compensation mapping table according to a preset fusion strategy to obtain a fused view angle mapping table;
performing interpolation processing on the fusion view mapping table to generate a global compensation mapping table;
and correcting the global compensation mapping table according to the target brightness data and the target position information of the inspection line region to obtain a view angle compensation mapping table corresponding to the shooting module.
In one possible implementation manner of the present application, the correcting the global compensation mapping table according to the target brightness data and the target position information of the inspection line area to obtain the view angle compensation mapping table corresponding to the shooting module includes:
acquiring target brightness data in a test line area and target position information corresponding to the target brightness data;
inputting the target brightness data and the target position information into a preset mapping module for brightness mapping to obtain brightness mapping parameters;
Acquiring target reference brightness associated with the target brightness data in the first reference area;
and correcting the global compensation mapping table according to the brightness mapping parameter and the target reference brightness to obtain a view compensation mapping table.
In another aspect, the present application provides a defect compensation device, including:
an image acquisition module configured to drive a target display device to display a preset test image in response to a defect compensation request for the target display device;
the visual angle compensation module is configured to drive the shooting module to acquire a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
and the defect compensation module is configured to perform Mura defect compensation on the target display device based on the target shooting image to obtain a compensated target display device.
In another aspect, the present application further provides a defect compensation apparatus, including:
one or more processors;
a memory; and
one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps of the defect compensation method.
In another aspect, the present application also provides a computer readable storage medium having stored thereon a computer program to be loaded by a processor for performing the steps of the defect compensation method.
In the method, a defect compensation request for target display equipment is responded, and the target display equipment is driven to display a preset test image; the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image; and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment. The visual angle compensation mapping table corresponding to the shooting module is obtained to correct the visual angle of the shooting image, and defect compensation is carried out on the display equipment according to the corrected shooting image, so that the defect compensation effect is improved, and the compensation efficiency is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a defect compensation method according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of an embodiment of a defect compensation method according to an embodiment of the present application;
FIG. 3 is a schematic view of a scene of an embodiment of a target compensation image provided by an embodiment of the present application;
FIG. 3a is a schematic view of an embodiment of a display verification region in a target compensated image according to an embodiment of the present application
FIG. 3b is a schematic view of an embodiment of a first reference region in a target compensated image according to an embodiment of the present application;
FIG. 3c is a schematic view of an embodiment of a second reference region in a target compensated image according to an embodiment of the present application;
fig. 4 is a flowchart illustrating an embodiment of obtaining a view angle compensation mapping table of a shooting module in the defect compensation method provided in the embodiment of the present application;
FIG. 5 is a flowchart illustrating an embodiment of acquiring region feature data of a display compensation region in a captured image according to the defect compensation method provided in the embodiment of the present application;
FIG. 6 is a schematic diagram of an embodiment of a defect compensation device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an embodiment of a defect compensation device according to an embodiment of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The existing service enterprises such as finance, banks and the like generally need to carry out data butt joint with a plurality of brand manufacturers when in operation, the existing data butt joint mode is customized development according to the requirements of the brand manufacturers, data and outgoing data are stored according to an outgoing field design table structure, and whether the data are successfully transmitted is not detected; the existing data docking mode can increase the data error rate and cannot guarantee the integrity of the data, so that the workload of the version process is increased, and the scene application requirement of quick docking on line during on-line aging is prolonged.
Based on the above, the application provides a defect compensation method, device, equipment and computer readable storage medium, so as to solve the technical problem of higher error rate in the data docking process in the prior art.
The defect compensation method in the embodiment of the invention is applied to a defect compensation device, the defect compensation device is arranged in defect compensation equipment, one or more processors, a memory and one or more application programs are arranged in the defect compensation equipment, wherein the one or more application programs are stored in the memory and are configured to be executed by the processors to implement the defect compensation method; the defect compensation device can be an intelligent terminal, such as a mobile phone, a tablet computer, a network device, an intelligent computer and the like; alternatively, the defect compensation device may be a server, or a service cluster formed by a plurality of servers.
As shown in fig. 1, fig. 1 is a schematic view of a defect compensation method according to an embodiment of the present application, where a view angle compensation scene includes a defect compensation device 100 (a defect compensation apparatus is integrated in the defect compensation device 100) and a target display device 200, and a computer readable storage medium corresponding to the defect compensation method is run in the defect compensation device 100 to execute steps of the defect compensation method. The target display device 200 is a display device that is communicatively connected to the defect-compensating device 100 to be Mura defect-compensated by the defect-compensating device 100.
It should be understood that the defect compensation device in the scene of the defect compensation method shown in fig. 1, or the apparatus included in the defect compensation device, is not limited to the embodiment of the present invention, that is, the number of devices and the type of devices of the defect compensation device included in the scene of the defect compensation method, or the number of apparatuses and the type of apparatuses included in each device do not affect the overall implementation of the technical solution in the embodiment of the present invention, and may be calculated as equivalent replacement or derivative of the technical solution claimed in the embodiment of the present invention.
The defect compensation device 100 in the embodiment of the present invention is mainly used for: responding to a defect compensation request aiming at target display equipment, and driving the target display equipment to display a preset test image; the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image; and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment.
The defect compensation device 100 in the embodiment of the present invention may be an independent defect compensation device, for example, an intelligent terminal such as an intelligent computer and an intelligent test device, or may be a defect compensation network or a defect compensation cluster composed of a plurality of defect compensation devices.
The embodiments of the present application provide a defect compensation method, apparatus, device and computer readable storage medium, and the detailed description is given below.
It will be understood by those skilled in the art that the application environment shown in fig. 1 is only one application scenario related to the present application scenario, and is not limited to the application scenario of the present application scenario, and other application environments may further include more or fewer defect compensation devices than those shown in fig. 1, or a view compensation network connection relationship, for example, only one defect compensation device is shown in fig. 1, and it is understood that the scenario of the defect compensation method may further include one or more defect compensation devices, which is not limited herein in particular; a memory may also be included in the defect compensation device 100 for storing image data and other data.
It should be noted that, the schematic view of the scene of the defect compensation method shown in fig. 1 is only an example, and the scene of the defect compensation method described in the embodiment of the present invention is for more clearly describing the technical solution of the embodiment of the present invention, and does not constitute a limitation to the technical solution provided by the embodiment of the present invention.
Based on the above-described scenarios of defect compensation methods, various embodiments of the defect compensation methods disclosed herein are presented.
As shown in fig. 2, fig. 2 is a schematic flow chart of an embodiment of a defect compensation method according to the present application, where the defect compensation method includes the following steps 201 to 203:
201. responding to a defect compensation request aiming at target display equipment, and driving the target display equipment to display a preset test image;
the defect compensation method in this embodiment is applied to defect compensation devices, and the type and number of the defect compensation devices are not specifically limited, that is, the defect compensation devices may be one or more intelligent terminals or servers, and in a specific embodiment, the defect compensation device is a test device including a shooting module, and can perform Mura defect compensation on a display device.
Specifically, the defect compensation device responds to a defect compensation request for the target display device during operation, wherein the defect compensation request is an operation instruction for driving the defect compensation device to perform mura defect compensation (i.e., a demux operation) on the designated target display device. Alternatively, the manner of departure of the defect-compensation request is not particularly limited herein, i.e., the defect-compensation request may be actively triggered by the user. For example, the user is a worker who leaves the factory for the display device. By clicking a defect compensation button in the defect compensation device, a defect compensation request to the designated target display device is actively triggered. Optionally, the defect compensation request may also be triggered automatically by the defect compensation device, for example, the defect compensation device presets a defect compensation process, and when a specific display device factory verification is performed, the defect compensation request to the target display device is triggered automatically.
Specifically, after receiving a defect compensation request for a target display device, the defect compensation device transmits a control instruction to the target display device based on a communication link established with the target display device, and drives the target display device to display a preset test image. Wherein the target display device is a display device having Mura defects. The Mura defect is a defect area in which uneven brightness or color distribution of an optical fiber passing through a display screen in a display device is inconsistent due to factors such as a manufacturing process, and obvious abnormal dark areas, abnormal bright spots or inconsistent colors appear in the display screen of the display device.
Specifically, the defect compensation device can establish a wired communication link or a wireless communication link (e.g., WI F I, bluetooth, 2.4G, star flash, etc.) with the target display device, and send an operation instruction or transmit a test image to the target display device based on the wired communication link or the wireless communication link. The test image is a test image capable of completely displaying Mura defects existing in the target display device. In one embodiment, the test image is a black test image. That is, the defect compensation device drives the target display device to display the black test image to determine the Mura defect of the target display device and perform defect compensation in a subsequent step. Alternatively, in other embodiments, the test image may be another image that can assist in identifying Mura defects of the target display device, which is not limited herein.
202. The method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
specifically, the defect compensation device is further provided with a shooting module capable of shooting images in a preset mode, after the target display device displays a preset test image, the shooting module is further driven to collect an initial shooting image of the test image, and the initial shooting image is subjected to view angle correction according to a view angle compensation mapping table corresponding to the shooting module, so that a target shooting image after view angle correction is obtained.
Specifically, as the size of the display device is larger and larger, the defect compensation device calls the shooting module to acquire the view angle compensation mapping table corresponding to the shooting module in advance before the image acquisition is performed on the test image displayed by the target display device. And after the shooting module collects the test shooting image corresponding to the test image, the visual angle correction is carried out on the test shooting image according to the visual angle compensation mapping table, so as to obtain a target shooting image.
Specifically, the defect compensation device responds to the view angle compensation request in advance, drives the preset display device to display a target compensation image, and calls the shooting module to shoot the target compensation image to obtain an initial shooting image corresponding to the target compensation image. The target compensation image is an image comprising a plurality of preset display compensation areas. As shown in fig. 3, fig. 3 is a schematic view of a scene of an embodiment of a target compensation image according to an embodiment of the present application, where in a specific embodiment, the target compensation image includes a plurality of first reference areas and second reference areas disposed in a middle area of the target compensation image. The first reference area is arranged inside the second reference area. And the display check areas are symmetrically distributed at the corners outside the second reference area. Check lines are arranged between each display check area and the second reference area. The preset display device may be a target display device or other display devices to be subjected to defect compensation.
In this embodiment, as shown in fig. 3a, fig. 3a is a schematic view of a scene of an embodiment of a display check area in the target compensation image, where the display check area is a display area with a height of 160 pixels, a width of 400 pixels, and a length of 1200 pixels, and is divided into 128 cells, and is used for randomly and uniformly storing two groups of 64-level gray-scale signals.
As shown in fig. 3b, fig. 3b is a schematic view of a scene of an embodiment of the first reference region in the target compensation image. The first reference area is a reference display area with the height of 240 pixels and the width of 400 pixels, and the 64-level gray scale signals are uniformly stored randomly.
As shown in fig. 3c, fig. 3c is a schematic view of a scene of an embodiment of a second reference region in the target compensation image. The second reference area is a reference display area with the height of 400 pixels and the width of 1200 pixels, and four groups of 64-level gray scale signals are randomly and uniformly stored.
Each check line is a brightness line for randomly and uniformly storing a group of 64-level gray-scale signals.
Specifically, the defect compensation device drives the shooting module to acquire an initial shooting image corresponding to a target compensation image displayed by the preset display device, wherein the initial shooting image is a T I F format picture carrying brightness information.
Specifically, after the initial shot image is acquired, the defect compensation device performs feature extraction on the initial shot image, so as to obtain region feature data of each display compensation region in the shot image. That is, the defect compensation apparatus acquires the verification feature data corresponding to the respective display verification areas, and the reference feature data corresponding to the first reference area and the reference feature data corresponding to the second reference area.
Specifically, after obtaining the region feature data of each display compensation region, the defect compensation device derives the verification feature data in the region feature data according to the reference feature data in the region feature data, so as to obtain the view angle compensation mapping table corresponding to the shooting module.
Specifically, after the defect compensation device obtains the view angle compensation mapping table, the defect compensation device further corrects the view angle of the test shot image according to the view angle compensation mapping table, that is, after the test shot image is obtained, the view angle compensation mapping table is superimposed into the test shot image to correct the view angle, so that a target shot image is obtained, and the view angle interference is reduced. The target shooting image is brightness image data generated by the test shooting image superposition visual angle compensation mapping table.
203. And performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment.
Specifically, after the defect compensation device obtains the target photographed image after the view angle compensation, mura defect compensation is performed on the target display device based on the target photographed image, so as to obtain the compensated target display device.
Specifically, the defect compensation device performs Mura analysis on the target display device according to the target photographed image identification, so as to determine Mura defect information in the target display device, determine Mura defect areas in the target display device according to the Mura defect information, determine defect degrees of the Mura defect areas, and control the target display device to perform backlight brightness compensation based on the defect degrees of the Mura defect areas, so as to eliminate the Mura defects in the Mura defect areas, and improve display image quality of the target display device.
In this embodiment, the defect compensation device drives the target display device to display a preset test image by responding to a defect compensation request for the target display device; the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image; and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment. The visual angle compensation mapping table corresponding to the shooting module is obtained to correct the visual angle of the shooting image, and defect compensation is carried out on the display equipment according to the corrected shooting image, so that the defect compensation effect is improved, and the compensation efficiency is effectively improved.
As shown in fig. 4, fig. 4 is a flow chart of an embodiment of obtaining a view angle compensation mapping table of a shooting module in the defect compensation method provided in the embodiment of the present application, and specifically, in this embodiment, the defect compensation method further includes steps 301 to 304:
301. acquiring a first reference feature corresponding to the first reference region and a second reference feature corresponding to the second reference region in the region feature data;
specifically, in this embodiment, after the defect compensation device acquires the initial captured image, the defect compensation device further performs feature extraction on the initial captured image, so as to obtain region feature data of each display compensation region in the captured image. Wherein the region characteristic data includes reference characteristic data and verification characteristic data. The reference feature data is region feature data corresponding to a reference region included in the initial captured image. The verification feature data is region feature data corresponding to a display verification region contained in the initial captured image. Wherein the reference region includes a first reference region and a second reference region. The region characteristic data includes a signal number, luminance data, and signal coordinates in each display compensation region.
302. Deducing the verification feature data of each display verification region according to the first reference features to obtain a first view angle compensation mapping table;
specifically, after the region feature data is obtained, the defect compensation device further obtains a first reference feature corresponding to the first reference region and a second reference feature corresponding to the second reference region in the region feature data.
Specifically, after the defect compensation device obtains the first reference feature, deducing the verification feature data of the display verification area according to the first reference feature to obtain a first view angle compensation mapping table.
Specifically, the defect compensation device obtains a verification signal number in the verification feature data, and verification brightness data and a verification position coordinate corresponding to the verification signal number, and obtains a first reference signal number corresponding to the verification signal number in the first reference feature, and first reference brightness data corresponding to the first reference signal number.
Specifically, the defect compensation device inputs the obtained calibration position coordinates, calibration brightness data, calibration signal numbers and first reference brightness data into a preset compensation parameter calculation module, calculates first view angle compensation parameters, and gathers the first view angle compensation parameters corresponding to the calibration signal numbers to obtain a first view angle compensation mapping table.
Specifically, the process of the defect compensation device calculating the first viewing angle compensation parameter is: the defect compensation device inputs the checked brightness data and the first reference brightness data into a first database for indexing to obtain a first compensation coefficient. And inputting the calibration position coordinates and the calibration signal numbers into a second database for indexing to obtain a second compensation coefficient. And inputting the acquired first compensation coefficient, second compensation coefficient, calibration position coordinate and calibration signal number into a preset third database for indexing to obtain first view angle compensation data, wherein the first view angle compensation data is a first compensation array.
Specifically, the defect compensation device gathers the first compensation arrays corresponding to each check signal number to obtain a first view compensation mapping table.
303. Deducing the verification feature data of each display verification region according to the second reference features to obtain a second view angle compensation mapping table;
specifically, the defect compensation device further derives verification feature data in the display verification area according to the second reference feature of the second reference area, so as to obtain a second view angle compensation mapping table.
Specifically, the defect compensation device obtains a verification signal number in the verification feature data, and verification brightness data and a verification position coordinate corresponding to the verification signal number, and obtains a second reference signal number corresponding to the verification signal number in the second reference feature, and second reference brightness data corresponding to the second reference signal number. The second reference brightness data is a brightness average value of three reference brightness values corresponding to the second reference signal number. That is, in the second reference area, each reference signal number corresponds to three reference luminance values, and after the defect compensation apparatus obtains the three reference luminance values corresponding to the second reference signal number, an average value of the three reference luminance values is calculated, so as to obtain second reference luminance data. Alternatively, in other embodiments, the second reference luminance data may be a variance or standard deviation of three reference luminance values corresponding to the second reference signal number.
Specifically, the defect compensation device inputs the obtained calibration position coordinates, calibration brightness data, calibration signal numbers and second reference brightness data into a preset compensation parameter calculation module, calculates second view angle compensation parameters, and gathers the second view angle compensation parameters corresponding to the calibration signal numbers to obtain a second view angle compensation mapping table.
The calculating process of the second viewing angle compensation parameter may refer to the calculating manner of the first viewing angle compensation parameter, which is not described herein.
304. And determining a view angle compensation mapping table corresponding to the shooting module according to the first view angle compensation mapping table and the second view angle compensation mapping table.
Specifically, after the defect compensation device obtains the first view angle compensation mapping table and the second view angle compensation mapping table, the defect compensation device fuses the first view angle compensation mapping table and the second view angle compensation mapping table according to the first view angle compensation mapping table and the second view angle compensation mapping table, and obtains the view angle compensation mapping table corresponding to the shooting module.
Specifically, a preset fusion policy is stored in the defect compensation device, and the first view compensation mapping table and the second view compensation mapping table are fused according to the preset fusion policy, so as to obtain a fused view mapping table. The preset fusion strategy can calculate an average value for each compensation value in the first view angle compensation mapping table and the second view angle compensation mapping table, and summarize the average value of each compensation value to obtain the fusion view angle mapping table. Optionally, in other embodiments, the preset fusion policy may further calculate a variance or standard deviation for the compensation values in the first view compensation mapping table and the second view compensation mapping table to generate a fused view mapping table.
Specifically, after the defect compensation device obtains the fusion view mapping table, interpolation processing is further performed on the fusion view mapping table, so as to obtain a global compensation mapping table. Wherein the global compensation map is a compensation map whose compensation range includes the global display area of the entire target display device.
Optionally, the defect compensation device further corrects the global compensation mapping table according to the target brightness data and the target position information of the check line area, so as to generate a view angle compensation mapping table corresponding to the shooting module.
Specifically, the defect compensation device queries the target signal sequence number in the inspection line region, and the target luminance data and the target position information corresponding to the target signal sequence number. And inputting the target signal sequence number, the target brightness data and the target position information into a preset mapping module, and driving the mapping module to carry out brightness mapping according to the global compensation mapping table to generate brightness mapping parameters.
Specifically, the defect compensation device further obtains a reference signal sequence number corresponding to the target signal sequence number in the first reference area and a target reference brightness corresponding to the reference signal sequence number according to the target signal sequence number. And the defect compensation equipment corrects the global compensation mapping table according to the brightness mapping parameter and the target reference brightness to obtain a view compensation mapping table.
Specifically, the defect compensation device compares the brightness mapping parameter with a difference value of the target reference brightness, corrects the global compensation mapping table according to the difference value, and generates a viewing angle compensation mapping table of the shooting module and the target display device.
In this embodiment, the defect compensation device obtains a first reference feature corresponding to the first reference region and a second reference feature corresponding to the second reference region in the region feature data; deducing the verification feature data of each display verification region according to the first reference features to obtain a first view angle compensation mapping table; deducing the verification feature data of each display verification region according to the second reference features to obtain a second view angle compensation mapping table; and determining a view angle compensation mapping table corresponding to the shooting module according to the first view angle compensation mapping table and the second view angle compensation mapping table. The visual angle compensation mapping table of the shooting module and the target display device is generated through the reference characteristics and the verification characteristics, so that the visual angle compensation of the shooting module is realized, and the success rate of the subsequent Mura defect compensation is improved.
As shown in fig. 5, fig. 5 is a flowchart of an embodiment of obtaining region feature data of a display compensation region in a captured image in the defect compensation method according to the embodiment of the present application, and in this embodiment, the defect compensation method further includes:
401. Acquiring angular point information of the initial shooting image, and cutting the initial shooting image according to angular point coordinates in the angular point information to obtain a cut initial shooting image;
based on the above embodiment, in this embodiment, after the defect compensation device obtains the initial captured image, the defect compensation device further performs corner detection on the initial captured image to obtain corner information of the initial captured image, and cuts the initial captured image according to corner coordinates in the corner information to obtain a cut initial captured image. Wherein the corner information comprises corner coordinates and corner relative positions.
402. Geometrically correcting the cut initial shooting image according to the relative positions of the corner points in the corner point information to obtain a corrected shooting image;
specifically, after the initial shot image after cutting is obtained, the defect compensation device further performs geometric correction on the initial shot image after cutting according to the relative position of the corner in the corner information, so as to obtain a corrected shot image.
403. And acquiring feature extraction templates corresponding to the display compensation areas, and carrying out feature extraction on the corrected shooting image based on the feature extraction templates to obtain area feature data of the display compensation areas.
Specifically, after the correction shooting image is obtained, the defect compensation device also obtains a feature extraction template corresponding to each display compensation area in the correction shooting image, and performs feature extraction on each display compensation area in the correction shooting image according to the feature extraction template to obtain area feature data of each display compensation area. Wherein, each characteristic extraction template is the same with the size and the shape of the corresponding display compensation area in the corrected shooting image.
Specifically, the defect compensation device cuts the corrected photographed image based on each feature extraction template to obtain compensation region images corresponding to each display compensation region in the corrected photographed image, extracts brightness feature data in each compensation region image and a signal number corresponding to the brightness feature data, and sets the signal number and the brightness feature data as region feature data of the display compensation region.
In this embodiment, the defect compensation device cuts the initial captured image according to the corner coordinates in the corner information by acquiring the corner information of the initial captured image, so as to obtain a cut initial captured image; geometrically correcting the cut initial shooting image according to the relative positions of the corner points in the corner point information to obtain a corrected shooting image; and acquiring feature extraction templates corresponding to the display compensation areas, and carrying out feature extraction on the corrected shooting image based on the feature extraction templates to obtain area feature data of the display compensation areas. The method and the device can accurately extract the regional characteristic data of each display compensation region in the initial shooting image, and provide a data basis for the subsequent visual angle correction.
In order to better implement the defect compensation method according to the embodiment of the present application, based on the defect compensation method, a defect compensation device is further provided in the embodiment of the present application, as shown in fig. 6, fig. 6 is a schematic structural diagram of the defect compensation device provided in the embodiment of the present application, and specifically, the defect compensation device 500 includes:
an image acquisition module 501 configured to drive a target display device to display a preset test image in response to a defect compensation request for the target display device;
the visual angle compensation module 502 is configured to drive the shooting module to collect a test shooting image of the test image, and perform visual angle correction on the test shooting image according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
and the defect compensation module 503 is configured to perform Mura defect compensation on the target display device based on the target shooting image, so as to obtain a compensated target display device.
In a possible implementation manner of this embodiment, the defect compensation device performs, according to a view angle compensation mapping table corresponding to the photographing module, view angle correction on the test photographed image, and before obtaining the target photographed image, the defect compensation device further includes:
Responding to a visual angle compensation request, and displaying a target compensation image on preset display equipment, wherein the target compensation image is an image comprising a plurality of preset display compensation areas;
acquiring an initial shooting image corresponding to the target compensation image, and extracting features of the initial shooting image to obtain regional feature data of a display compensation region in the initial shooting image;
deducing the verification feature data in the regional feature data according to the reference feature data in the regional feature data to obtain a view angle compensation mapping table corresponding to the shooting module.
In one possible implementation manner of this embodiment, the defect compensation device performs feature extraction on the captured image to obtain region feature data of a display compensation region in the captured image, where the method includes:
acquiring angular point information of the initial shooting image, and cutting the initial shooting image according to angular point coordinates in the angular point information to obtain a cut initial shooting image;
geometrically correcting the cut initial shooting image according to the relative positions of the corner points in the corner point information to obtain a corrected shooting image;
and acquiring feature extraction templates corresponding to the display compensation areas, and carrying out feature extraction on the corrected shooting image based on the feature extraction templates to obtain area feature data of the display compensation areas.
In one possible implementation manner of this embodiment, the defect compensation device performs feature extraction on the rectified captured image based on the feature extraction template to obtain region feature data of each display compensation region, where the method includes:
cutting the corrected shooting image based on each characteristic extraction template to obtain a compensation area image of the corrected shooting image;
and extracting brightness characteristic data in each compensation area image to obtain area characteristic data of each display compensation area.
In a possible implementation manner of this embodiment, the defect compensation device derives the verification feature data in the region feature data according to the reference feature data in the region feature data to obtain the view angle compensation mapping table corresponding to the shooting module, and includes:
acquiring a first reference feature corresponding to the first reference region and a second reference feature corresponding to the second reference region in the region feature data;
deducing the verification feature data of each display verification region according to the first reference features to obtain a first view angle compensation mapping table;
deducing the verification feature data of each display verification region according to the second reference features to obtain a second view angle compensation mapping table;
And determining a view angle compensation mapping table corresponding to the shooting module according to the first view angle compensation mapping table and the second view angle compensation mapping table.
In a possible implementation manner of this embodiment, the defect compensation device determines, according to the first view angle compensation mapping table and the second view angle compensation mapping table, a view angle compensation mapping table corresponding to the shooting module, including:
fusing the first view angle compensation mapping table and the second view angle compensation mapping table according to a preset fusion strategy to obtain a fused view angle mapping table;
performing interpolation processing on the fusion view mapping table to generate a global compensation mapping table;
and correcting the global compensation mapping table according to the target brightness data and the target position information of the inspection line region to obtain a view angle compensation mapping table corresponding to the shooting module.
In one possible implementation manner of this embodiment, the defect compensation device corrects the global compensation mapping table according to the target brightness data and the target position information of the inspection line area to obtain a view angle compensation mapping table corresponding to the shooting module, and includes:
acquiring target brightness data in a test line area and target position information corresponding to the target brightness data;
Inputting the target brightness data and the target position information into a preset mapping module for brightness mapping to obtain brightness mapping parameters;
acquiring target reference brightness associated with the target brightness data in the first reference area;
and correcting the global compensation mapping table according to the brightness mapping parameter and the target reference brightness to obtain a view compensation mapping table.
In this embodiment, the defect compensation device drives the target display device to display a preset test image by responding to a defect compensation request for the target display device; the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image; and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment. The visual angle compensation mapping table corresponding to the shooting module is obtained to correct the visual angle of the shooting image, and defect compensation is carried out on the display equipment according to the corrected shooting image, so that the defect compensation effect is improved, and the compensation efficiency is effectively improved.
The embodiment of the invention also provides a defect compensation device, as shown in fig. 7, and fig. 7 is a schematic structural diagram of an embodiment of the defect compensation device provided in the embodiment of the application.
The defect compensation device integrates any one of the defect compensation devices provided by the embodiment of the invention, and comprises:
one or more processors;
a memory; and
one or more applications, wherein the one or more applications are stored in the memory and configured to perform the steps of the defect compensation method described in any of the defect compensation method embodiments described above by the processor.
Specifically, the present invention relates to a method for manufacturing a semiconductor device. The defect compensation device may include one or more processing cores 'processors 601, one or more computer readable storage media's memory 602, power supply 603, and input unit 604, among other components. It will be appreciated by those skilled in the art that the defect-compensating device structure shown in fig. 6 is not limiting of the defect-compensating device and may include more or fewer components than shown, or may combine certain components, or may be a different arrangement of components. Wherein:
processor 601 is the control center of the defect-compensating device, connects the various parts of the entire defect-compensating device using various interfaces and lines, and performs various functions and processes of the defect-compensating device by running or executing software programs and/or modules stored in memory 602, and calling data stored in memory 602, thereby performing overall monitoring of the defect-compensating device. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, etc., and the modem processor primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 601.
The memory 602 may be used to store software programs and modules, and the processor 601 may execute various functional applications and data processing by executing the software programs and modules stored in the memory 602. The memory 602 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data created according to the use of the defect compensation apparatus, and the like. In addition, the memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 602 may also include a memory controller to provide access to the memory 602 by the processor 601.
The defect compensation device further comprises a power supply 603 for supplying power to the respective components, and the power supply 603 may be logically connected to the processor 601 through a power management system, so that functions of managing charging, discharging, power consumption management and the like are achieved through the power management system. The power supply 603 may also include one or more of any components, such as a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
The defect compensation device may further comprise an input unit 604, which input unit 604 may be used for receiving input numerical or character information and generating keyboard, mouse, joystick, optical or trackball signal inputs in connection with user settings and function control.
Although not shown, the defect compensating apparatus may further include a display unit or the like, which is not described herein. Specifically, in this embodiment, the processor 601 in the defect compensation device loads executable files corresponding to the processes of one or more application programs into the memory 602 according to the following instructions, and the processor 601 executes the application programs stored in the memory 602, so as to implement various functions as follows:
responding to a defect compensation request aiming at target display equipment, and driving the target display equipment to display a preset test image;
the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment.
To this end, embodiments of the present invention provide a computer-readable storage medium, which may include: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like. On which a computer program is stored, which computer program is loaded by a processor for performing the steps of any of the defect compensation methods provided by the embodiments of the present invention. For example, the loading of the computer program by the processor may perform the steps of:
responding to a defect compensation request aiming at target display equipment, and driving the target display equipment to display a preset test image;
the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
and performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.
In the implementation, each unit or structure may be implemented as an independent entity, or may be implemented as the same entity or several entities in any combination, and the implementation of each unit or structure may be referred to the foregoing method embodiments and will not be repeated herein.
The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.
The foregoing has outlined a detailed description of a defect compensation method provided by the embodiments of the present application, wherein specific embodiments are utilized to illustrate the principles and embodiments of the present invention, and the above description of the embodiments is only for aiding in the understanding of the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.
Claims (10)
1. A defect compensation method, the defect compensation method comprising:
responding to a defect compensation request aiming at target display equipment, and driving the target display equipment to display a preset test image;
the method comprises the steps that a driving shooting module collects a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
And performing Mura defect compensation on the target display equipment based on the target shooting image to obtain compensated target display equipment.
2. The defect compensation method of claim 1, wherein the performing view correction on the test captured image according to the view compensation mapping table corresponding to the capturing module, before obtaining the target captured image, further comprises:
responding to a visual angle compensation request, and displaying a target compensation image on preset display equipment, wherein the target compensation image is an image comprising a plurality of preset display compensation areas;
acquiring an initial shooting image corresponding to the target compensation image, and extracting features of the initial shooting image to obtain regional feature data of a display compensation region in the initial shooting image;
deducing the verification feature data in the regional feature data according to the reference feature data in the regional feature data to obtain a view angle compensation mapping table corresponding to the shooting module.
3. The defect compensation method of claim 2, wherein the performing feature extraction on the captured image to obtain the region feature data of the display compensation region in the captured image comprises:
Acquiring angular point information of the initial shooting image, and cutting the initial shooting image according to angular point coordinates in the angular point information to obtain a cut initial shooting image;
geometrically correcting the cut initial shooting image according to the relative positions of the corner points in the corner point information to obtain a corrected shooting image;
and acquiring feature extraction templates corresponding to the display compensation areas, and carrying out feature extraction on the corrected shooting image based on the feature extraction templates to obtain area feature data of the display compensation areas.
4. The defect compensation method of claim 3, wherein the performing feature extraction on the rectified captured image based on the feature extraction template to obtain region feature data of each of the display compensation regions comprises:
cutting the corrected shooting image based on each characteristic extraction template to obtain a compensation area image of the corrected shooting image;
and extracting brightness characteristic data in each compensation area image to obtain area characteristic data of each display compensation area.
5. The defect compensation method of claim 2, wherein the display compensation area comprises at least one display verification area, and a first reference area and a second reference area;
The deriving the verification feature data in the regional feature data according to the reference feature data in the regional feature data to obtain the view angle compensation mapping table corresponding to the shooting module, including:
acquiring a first reference feature corresponding to the first reference region and a second reference feature corresponding to the second reference region in the region feature data;
deducing the verification feature data of each display verification region according to the first reference features to obtain a first view angle compensation mapping table;
deducing the verification feature data of each display verification region according to the second reference features to obtain a second view angle compensation mapping table;
and determining a view angle compensation mapping table corresponding to the shooting module according to the first view angle compensation mapping table and the second view angle compensation mapping table.
6. The defect compensation method of claim 5, wherein determining the view compensation map corresponding to the photographing module according to the first view compensation map and the second view compensation map comprises:
fusing the first view angle compensation mapping table and the second view angle compensation mapping table according to a preset fusion strategy to obtain a fused view angle mapping table;
Performing interpolation processing on the fusion view mapping table to generate a global compensation mapping table;
and correcting the global compensation mapping table according to the target brightness data and the target position information of the inspection line region to obtain a view angle compensation mapping table corresponding to the shooting module.
7. The defect compensation method of claim 6, wherein the correcting the global compensation map according to the target brightness data and the target position information of the inspection line region to obtain the view compensation map corresponding to the photographing module comprises:
acquiring target brightness data in a test line area and target position information corresponding to the target brightness data;
inputting the target brightness data and the target position information into a preset mapping module for brightness mapping to obtain brightness mapping parameters;
acquiring target reference brightness associated with the target brightness data in the first reference area;
and correcting the global compensation mapping table according to the brightness mapping parameter and the target reference brightness to obtain a view compensation mapping table.
8. A defect compensating apparatus, characterized in that the defect compensating apparatus comprises:
An image acquisition module configured to drive a target display device to display a preset test image in response to a defect compensation request for the target display device;
the visual angle compensation module is configured to drive the shooting module to acquire a test shooting image of the test image, and the visual angle of the test shooting image is corrected according to a visual angle compensation mapping table corresponding to the shooting module to obtain a target shooting image;
and the defect compensation module is configured to perform Mura defect compensation on the target display device based on the target shooting image to obtain a compensated target display device.
9. A defect compensation apparatus, characterized in that the defect compensation apparatus comprises:
one or more processors;
a memory; and
one or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to implement the steps of the defect compensation method of any of claims 1 to 7.
10. A computer-readable storage medium, having stored thereon a computer program, the computer program being loaded by a processor to perform the steps of the defect compensation method of any of claims 1 to 7.
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