CN116953968A - Method, device, equipment and medium for detecting ghost shadow of LCD display screen - Google Patents
Method, device, equipment and medium for detecting ghost shadow of LCD display screen Download PDFInfo
- Publication number
- CN116953968A CN116953968A CN202310918650.3A CN202310918650A CN116953968A CN 116953968 A CN116953968 A CN 116953968A CN 202310918650 A CN202310918650 A CN 202310918650A CN 116953968 A CN116953968 A CN 116953968A
- Authority
- CN
- China
- Prior art keywords
- lcd display
- display screen
- ghost
- image
- determining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000012360 testing method Methods 0.000 claims abstract description 215
- 230000007547 defect Effects 0.000 claims abstract description 74
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 206010047571 Visual impairment Diseases 0.000 claims description 21
- 230000008439 repair process Effects 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0257—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Analytical Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
The application relates to the technical field of photoelectric display, in particular to a method, a device, equipment and a medium for detecting ghost shadows of an LCD display screen, wherein the method comprises the following steps: controlling an LCD display screen to display a reference picture, acquiring a reference image of the LCD display screen after the reference picture is displayed, and determining a first pixel value corresponding to a target test area in the reference image; controlling the LCD display screen to switch to a pure-color test picture, acquiring a test image of the LCD display screen after the pure-color test picture is displayed, and determining a second pixel value corresponding to a target test area in the test image; after switching the reference picture and the test picture of the LCD display screen for preset times, judging whether the pixel difference value corresponding to the target test area is smaller than a preset pixel difference value threshold value corresponding to the target test area or not; if yes, determining that no ghost defects exist; otherwise, determining that the ghost defect exists. The application effectively improves the accuracy of ghost detection of the LCD display screen.
Description
Technical Field
The application relates to the technical field of photoelectric display, in particular to a method, a device, equipment and a medium for detecting ghost shadows of an LCD display screen.
Background
The existence of the residual image in the LCD display screen can greatly reduce the viewing quality, when the display switches the picture, the picture before the switching does not completely disappear, and the image with part of the picture remained on the picture after the switching is the residual image.
In the related art, an artificial vision mode is adopted to detect the ghost, namely, an initial interface of the LCD display screen is switched to a detection interface, and a worker views whether any image of the initial interface exists in the switched detection screen, so as to determine whether the ghost exists in the LCD display screen.
However, in the manual visual inspection, there is a certain visual difference in the human eye observation, which may result in that the display screen with the ghost is determined to be free of the ghost, and the ghost detection accuracy of the display screen in the related art is low.
Disclosure of Invention
In order to improve the ghost detection accuracy of an LCD display screen, the application provides a ghost detection method, device, equipment and medium of the LCD display screen.
In a first aspect, the present application provides a method for detecting a ghost image on an LCD display screen, which adopts the following technical scheme:
a method for detecting ghost shadow of LCD display screen includes:
controlling an LCD display screen to display a reference picture, acquiring a reference image acquired by an image pickup device after the LCD display screen displays the reference picture, and determining a first pixel value corresponding to a target test area in the reference image;
The LCD display screen is controlled to be switched to a pure-color test picture, a test image after the pure-color test picture is displayed on the LCD display screen, which is acquired by the camera device, is acquired, and a second pixel value corresponding to a target test area in the test image is determined;
after switching the reference picture and the test picture of the LCD display screen for preset times, judging whether the pixel difference value corresponding to the target test area is smaller than a preset pixel difference value threshold corresponding to the target test area, wherein the pixel difference value is obtained based on each first pixel value and each second pixel value;
if yes, determining that no ghost defects exist; otherwise, determining that the ghost defect exists.
In one possible implementation manner, before determining the first pixel value corresponding to the target test area in the reference image, the method further includes:
dividing the reference image to obtain a plurality of test areas;
acquiring first identification information of an LCD display screen, and determining a plurality of LCD display screens to be referred, of which second identification information is the same as the first identification information, based on the first identification information and a preset LCD display screen identification information base;
acquiring residual image position information corresponding to each of a plurality of LCD display screens to be referred;
Matching the position information of the afterimage of each LCD display screen to be referred with the position information of the plurality of test areas, and determining the occurrence probability of the afterimage corresponding to each of the plurality of test areas;
and selecting a test area corresponding to the highest ghost occurrence probability from the plurality of test areas as a target test area.
In one possible implementation, the method further includes:
if the pixel difference value is smaller than the preset pixel difference value threshold value, sequentially judging whether the pixel difference value corresponding to each of a plurality of regions to be tested is not larger than the preset pixel difference value threshold value corresponding to each of the regions to be tested according to the sequence from high to low of the occurrence probability of the residual shadows based on the occurrence probability of the residual shadows corresponding to each of the regions to be tested, wherein the regions to be tested are the regions to be tested except for the target region; if the pixel difference values corresponding to all the areas to be tested are not larger than the preset pixel difference value threshold values corresponding to the areas to be tested, determining that no residual shadow defect exists;
otherwise, determining that the ghost defect exists.
In one possible implementation manner, after the otherwise determining that the ghost defect exists, the method further includes:
acquiring the duration time of the residual shadows corresponding to all the test areas respectively;
Determining the residual image grade corresponding to each test area based on the corresponding relation between the preset duration and the residual image grade and the residual image duration;
determining the ghost image grade corresponding to the LCD display screen based on the ghost image grade corresponding to each of all the test areas and the number information of the test areas;
and generating a repair reminding event based on the first identification information and the ghost level corresponding to the LCD display screen so as to carry out repair reminding of the LCD display screen.
In one possible implementation manner, before the generating the repair reminder event based on the first identification information and the ghost level corresponding to the LCD display screen, the method further includes:
judging whether the ghost image grade corresponding to the LCD display screen is not smaller than a preset maximum ghost image grade threshold value or not so as to determine the ghost image defect type information of the LCD display screen, wherein the ghost image defect type comprises: permanent ghost defect type and temporary ghost defect type;
correspondingly, the generating a repair reminding event based on the first identification information and the ghost level corresponding to the LCD display screen includes:
if yes, generating a reminding event that the LCD display screen cannot be repaired based on the first identification information, the ghost level corresponding to the LCD display screen and the permanent ghost defect type;
Otherwise, generating an LCD display screen repairable reminding event based on the first identification information, the corresponding ghost level of the LCD display screen and the temporary ghost defect type.
In one possible implementation, the determining of the pixel difference value includes:
determining a plurality of pixel differences based on each first pixel value and the second pixel value corresponding to each first pixel value;
and selecting the maximum pixel value from the pixel differences as the pixel difference.
In one possible implementation, the method further includes:
denoising the image, wherein the image comprises: a first image and a second image;
determining a pixel value corresponding to a target test area in an image comprises:
and determining a pixel value corresponding to the target test area in the denoised image.
In a second aspect, the present application provides a device for detecting a ghost image on an LCD display screen, which adopts the following technical scheme:
an image sticking detection device of an LCD display screen, comprising:
the first pixel value acquisition module is used for controlling the LCD display screen to display a reference picture, acquiring a reference image acquired by the camera device after the LCD display screen displays the reference picture, and determining a first pixel value corresponding to a target test area in the reference image;
The second pixel value acquisition module is used for controlling the LCD display screen to switch to a test picture, acquiring a test image of the LCD display screen acquired by the camera device after the LCD display screen displays a pure-color test picture, and determining a second pixel value corresponding to a target test area in the test image;
the judging module is used for judging whether the pixel difference value corresponding to the target test area is smaller than a preset pixel difference value threshold value corresponding to the target test area after the reference picture and the test picture of the LCD display screen are controlled to be switched for preset times, wherein the pixel difference value is obtained based on each first pixel value and each second pixel value; if yes, triggering the module without the ghost defect; otherwise, triggering a ghost defect existence module;
the image sticking defect absence module is used for determining that the image sticking defect is absent;
and the ghost defect determining module is used for determining that the ghost defect exists.
Third, the application provides an electronic device, which adopts the following technical scheme:
at least one processor;
a memory;
at least one application program, wherein the at least one application program is stored in the memory and configured to be executed by the at least one processor, the at least one application program configured to: the method for detecting ghost of the LCD panel according to any one of the first aspect is performed.
In a fourth aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme:
a computer-readable storage medium having stored thereon a computer program which, when executed in a computer, causes the computer to perform the method of detecting a ghost of an LCD display screen as claimed in any one of the first aspects.
In summary, the application has the following beneficial technical effects:
controlling an LCD display screen to display a reference picture, acquiring a reference image acquired by an image pickup device after the LCD display screen displays the reference picture, and acquiring a first pixel value corresponding to a target test area in the reference image; then controlling the LCD display screen to switch to a solid-color test picture, acquiring a test image of the LCD display screen, acquired by the camera device, after the solid-color test picture is displayed, determining a second pixel value corresponding to a target test area in the test image, switching the reference picture and the test picture of the LCD display screen for preset times to avoid accidents caused by too few switching times, and judging whether the pixel difference value of the target test area is not less than a preset pixel difference value threshold value of the target test area so as to determine whether the residual image defect exists; compared with the related art, the method and the device for detecting the residual shadows based on the human eye vision detection method detect whether the residual shadows exist or not, obtain accurate pixel value difference values through picture switching of preset times, judge the pixel value difference values, and effectively improve the accuracy of detecting the residual shadows of the LCD.
Drawings
Fig. 1 is a schematic structural diagram of a ghost detection system for an LCD according to an embodiment of the present application.
Fig. 2 is a flowchart of a method for detecting a ghost image of an LCD according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an apparatus for detecting ghost images on an LCD according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The application is described in further detail below in connection with fig. 1 to 4.
The present embodiment is merely illustrative of the present application and is not intended to limit the present application, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as necessary, but are protected by patent laws within the scope of the present application.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, unless otherwise specified, the term "/" generally indicates that the associated object is an "or" relationship.
For ease of understanding, the following terms are explained.
LCD (Liquid Crystal Display) display screen: the liquid crystal material consists of two pieces of polarized materials and liquid crystal solution between the polarized materials. In practical application, the liquid crystal deflects due to the voltage, and the liquid crystal forming the screen can display three primary colors of red, green and blue on the same point, or one point of the liquid crystal is overlapped by three points, which are arranged according to a certain sequence, and the liquid crystal can be stimulated by the voltage to display different colors. And the collocations of different proportions can present varied colors.
Residual shadow: an afterimage on the display; when the display switches the pictures, the previous picture does not disappear immediately, the visual effect and the second picture appear simultaneously, and the picture slowly disappears or does not disappear permanently.
The embodiment of the application provides a method for detecting ghost of an LCD display screen, which is executed by electronic equipment, wherein the electronic equipment can be a server or terminal equipment, and the server can be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server for providing cloud computing service. The terminal device may be a smart phone, a tablet computer, a notebook computer, a desktop computer, etc., but is not limited thereto, and the terminal device and the server may be directly or indirectly connected through a wired or wireless communication manner, which is not limited herein.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a ghost detection system for an LCD display screen according to the present application, including: LCD display screen, electronic equipment and image acquisition device. The electronic equipment controls LCD display pictures such as a reference picture and a test picture, the image acquisition device acquires images of the LCD display screen in real time and sends the acquired images of the LCD display screen to the electronic equipment, the electronic equipment analyzes the images to obtain a first pixel value and a second pixel value corresponding to a target test area of the LCD display screen, the first pixel value is a pixel value of the target test area in the images of the LCD display screen acquired after the reference picture is displayed by the LCD display screen, the second pixel value is a pixel value of the target test area in the images of the LCD display screen acquired after the test picture is displayed by the LCD display screen, and further analysis is carried out based on the first pixel value and the second pixel value to determine whether the residual image defect exists or not.
Referring to fig. 2, fig. 2 is a flowchart of a method for detecting an image sticking on an LCD display screen according to an embodiment of the present application, where the method includes steps S101, S102, S103, S104, and S105, where: step S101, controlling an LCD display screen to display a reference picture, acquiring a reference image acquired by an image pickup device after the LCD display screen displays the reference picture, and determining a first pixel value corresponding to a target test area in the reference image.
Specifically, after receiving the detection processing request, a detection process of the ghost of the LCD display screen may be executed, and a monitoring program is integrated in the electronic device in advance, where the monitoring program is configured to monitor a triggering behavior of the detection request, and once the detection request is monitored to be triggered, control the LCD display screen to display the reference picture. Specifically, after the user determines the detection, a detection instruction is automatically generated, wherein the detection confirmation method may include that the user clicks a detection button on the application program to confirm the detection, and that the user confirms the detection through voice, and when the electronic device detects that the user triggers a detection request, the electronic device controls the LCD display screen to display a reference picture.
The electronic equipment sends a first control signal carrying the reference picture to the LCD display screen, and the LCD display screen displays the reference picture after receiving the first control signal. The reference picture can be a preset browsing page, and compared with the manual judgment based on the random page, the reference picture is preset to judge whether the residual shadow exists or not, the accuracy is higher. The image pickup acquisition device acquires images corresponding to the LCD display screen displaying the reference picture, and further can obtain the reference image.
Further, the first pixel value is obtained from an image corresponding to a target test area in the reference image, all pixel points in the target test area can be detected by using the optical detection device, all the pixel points are sent to the electronic device, the electronic device can obtain an average pixel value based on the pixel values corresponding to all the pixel points, and the average pixel value is taken as the first pixel value, wherein the image capturing and collecting device and the optical detection device are not limited in the embodiment of the application. The target test area is obtained based on the occurrence probability of the ghost corresponding to each of the plurality of test areas, the influence degree of the target test area obtained based on the occurrence probability of the ghost on the LCD display screen watched by the user is larger and more representative, further, when the ghost exists in the target test area, the existence of the ghost on the LCD display screen is indicated, and when the ghost does not exist in the target test area, the detection on other test areas is executed.
Further, in the embodiment of the application, in order to avoid the occurrence of contingency and improve the accuracy of ghost detection, the LCD display screen can be controlled to display a reference picture with preset duration, and the user can be set for 10 minutes, one hour or two hours by himself, and the embodiment of the application is not limited.
Step S102, switching the LCD display screen to a solid-color test picture, acquiring a test image acquired by the camera device after the LCD display screen displays the solid-color test picture, and determining a second pixel value corresponding to a target test area in the test image.
Specifically, after the electronic device determines the first pixel value, a second control signal carrying the solid-color test picture is sent to the LCD display screen, so that the LCD display screen is switched to the solid-color test picture, and meanwhile, the camera shooting acquisition device acquires the LCD display screen displaying the solid-color test picture to obtain a test image. Correspondingly, to improve the accuracy of the ghost detection, a clearer ghost image is displayed, and based on actual conditions, preferably, the solid color may be gray. The second pixel value obtaining manner is the same as the first pixel value obtaining manner in step S101, and the embodiments of the present application are not described in detail.
Step S103, after the reference picture and the test picture of the LCD display screen are controlled to be switched for a preset number of times, judging whether the pixel difference value corresponding to the target test area is smaller than a preset pixel difference value threshold corresponding to the target test area, wherein the pixel difference value is obtained based on each first pixel value and each second pixel value.
Specifically, after the electronic device acquires the second pixel value, step S101 and step S102 are performed again in a loop until the preset number of times is reached. It can be understood that, by controlling the LCD display to perform the frame switching of the reference frame and the test frame for the preset number of times, the accidental occurrence of the image sticking phenomenon caused by performing the frame switching only once, that is, the LCD display does not have the image sticking phenomenon when performing the frame switching once, at this time, the target area of the LCD display is determined to have no image sticking defect, however, the image sticking phenomenon occurs after the LCD display performs the frame switching for the preset number of times. The preset times can be obtained from the same type of LCD display screen, that is, the times of picture switching when the afterimage appears on each of the plurality of LCD display screens with afterimage in the same type, the average times of picture switching are obtained based on the number of the LCD display screens with afterimage and the times of picture switching corresponding to each of the plurality of LCD display screens with afterimage, and the average times of picture switching are determined as the preset times. Further, a first pixel value of a number value corresponding to the preset number of times, a second pixel value of a corresponding number value, and a pixel difference value of a corresponding number value may be obtained, and the pixel difference value and the preset pixel difference value threshold may be determined.
The pixel difference value is calculated based on a pixel difference value calculation formula, and the pixel difference value is equal to or smaller than the second pixel value-the first pixel value. The preset pixel difference value threshold corresponding to the target test area is input to the electronic device in advance by a related technician, and step S101 can know that the occurrence probabilities of the afterimage corresponding to different test areas are different, and the influence degree on the user viewing is different, so that the preset pixel difference value threshold corresponding to different test areas is also different, and further, the judgment of the pixel difference value corresponding to the target test area effectively improves the judgment accuracy. In the embodiment of the application, the pixel difference threshold is obtained from the LCD display screen with the same model, that is, when the LCD display screens with the same model have the afterimage, the related technician can record the pixel difference corresponding to each test area when the LCD display screen with the afterimage displays the reference picture and the test picture, and it can be understood that the division of the plurality of test areas of the LCD display screen is preset, so that the pixel difference corresponding to each of the plurality of test areas of the LCD display screen with the afterimage can be obtained, and further, based on each test area, the plurality of pixel difference values can be obtained based on the LCD display screen with the plurality of afterimage, and the maximum pixel difference value can be selected from the plurality of pixel difference values as the pixel difference threshold corresponding to each test area, that is, the preset pixel difference threshold corresponding to each test area.
The pixel difference determining process includes steps S1031 to S1032 (not shown in the drawings), in which:
step S1031, determining a plurality of pixel difference values based on each first pixel value and the second pixel value corresponding to each first pixel value.
Step S1032, selecting the maximum pixel value from the pixel differences as the pixel difference.
Specifically, each time the reference picture and the test picture are switched, a first pixel value corresponding to each pixel and a second pixel value corresponding to the first pixel value can be obtained, and after the switching of the preset times, a pixel difference value of a quantity value corresponding to the preset times can be obtained. Selecting the maximum pixel difference value as the pixel difference value, and comparing the maximum pixel difference value with a preset pixel difference value threshold, wherein it can be understood that the maximum pixel difference value is representative, namely when the maximum pixel difference value is smaller than the preset pixel difference value threshold, the pixel difference values except the maximum pixel difference value are smaller than the preset pixel difference value threshold, so that the defect of no residual shadow can be determined; otherwise, determining that the ghost defect exists.
And step S104, if yes, determining that the ghost defect does not exist.
Specifically, if the pixel difference value of the target test area is smaller than the preset pixel difference value threshold value of the target test area, the LCD display screen is indicated to have no residual image defect, and the LCD display screen can be normally used.
Step S105, otherwise, determining that the ghost defects exist.
Specifically, if the pixel difference value of the target test area is not smaller than the preset pixel difference value threshold value of the target test area, the defect of the residual image of the LCD display screen is indicated, and repair and treatment are needed.
Based on the embodiment, controlling the LCD display screen to display a reference picture, acquiring a reference image acquired by the camera device after the LCD display screen displays the reference picture, and acquiring a first pixel value corresponding to a target test area in the reference image; then controlling the LCD display screen to switch to a solid-color test picture, acquiring a test image of the LCD display screen, acquired by the camera device, after the solid-color test picture is displayed, determining a second pixel value corresponding to a target test area in the test image, switching the reference picture and the test picture of the LCD display screen for preset times to avoid accidents caused by too few switching times, and judging whether the pixel difference value of the target test area is not less than a preset pixel difference value threshold value of the target test area so as to determine whether the residual image defect exists; compared with the related art, the method and the device for detecting the residual shadows based on the human eye vision detection method detect whether the residual shadows exist or not, obtain accurate pixel value difference values through picture switching of preset times, judge the pixel value difference values, and effectively improve the accuracy of detecting the residual shadows of the LCD.
Further, in one implementation manner of the embodiment of the present application, before determining the first pixel value corresponding to the target test area in the reference image, step S101 further includes steps S1011 to S1015 (not shown in the drawings), where: step S1011, dividing the reference image to obtain a plurality of test areas.
Specifically, the embodiment of the application does not limit the division number of the test areas, and can be divided into the test areas in the form of 8×8 matrix arrangement or the test areas in the form of 6*6 matrix arrangement. By dividing the LCD display screen into a plurality of test areas, the number of samples and the number of test results can be increased compared with the direct detection and comparison of the LCD display screen, so that the accuracy of detection can be effectively provided.
Step S1012, obtaining first identification information of the LCD display screen, and determining a plurality of LCD display screens to be referred, of which the second identification information is identical to the first identification information, based on the first identification information and a preset LCD display screen identification information base.
Specifically, the first identification information of the LCD display screen and the preset LCD display screen identification information library are input into the electronic device in advance, and the identification information can be production number information of the LCD display screen; the preset LCD display screen identification information base stores a plurality of LCD display screens and corresponding production number information, and the second identification information is identification information of a display screen with a ghost image, wherein the production number information of the display screen is identical to that of the LCD display screen in the application. And respectively matching the number information corresponding to each of a plurality of LCD display screens in a preset LCD display screen identification information base with the first identification information of the LCD display screen in the application one by one so as to obtain a plurality of LCD display screens to be referred.
Step S1013, obtaining the residual image position information corresponding to each of the to-be-referenced LCD display screens.
Specifically, the position information of the ghost corresponding to each of the plurality of LCD display screens to be referred is automatically recorded and input into the electronic equipment by the related technicians when the ghost appears; the position information of the ghost corresponding to each LCD display to be referred to may be a plurality of coordinates in a two-dimensional coordinate system established by taking any point in the display as an origin, and the ghost outline may be obtained based on the plurality of coordinates.
Step S1014, matching the position information of the ghost shadow of each LCD display screen to be referred with the position information of the plurality of test areas, and determining the occurrence probability of the ghost shadow corresponding to each of the plurality of test areas.
Specifically, the position information of each test area is a plurality of coordinates corresponding to a two-dimensional coordinate system established by taking any point in the display screen as an origin, and the position information of each test area can be a plurality of vertex coordinates corresponding to the test area. The coordinate origin corresponding to the test area is the same as the coordinate origin corresponding to the ghost position information, and then the probability of occurrence of the ghost in each test area can be determined based on the number of LCD display screens to be referred to and the number of occurrence times of the ghost in each test area. When a ghost exists in any two or more test areas, the test area corresponding to the ghost can be selected as the test area corresponding to the ghost through the area overlapping information of the ghost and each test area, wherein the test area corresponding to the ghost can be at least one.
Step S1015, selecting a test area corresponding to the highest probability of occurrence of the ghost from the plurality of test areas as a target test area.
Specifically, a test region having the highest probability of occurrence of ghost is selected from among the plurality of test regions, and is used as a target test region. And the accuracy is effectively improved based on the occurrence probability of the ghost.
Based on the embodiment, the reference image is divided to obtain a plurality of test areas, the first identification information of the LCD display screen is obtained, a plurality of LCD display screens with references are determined according to the first identification information and the preset LCD display screen identification information base, and the test area corresponding to the highest ghost occurrence probability is selected from the plurality of test areas as the target test area, so that the accuracy of selecting the target test area is effectively improved.
Further, in one implementation manner of the embodiment of the present application, step S104 further includes steps S1041 to S1043 (not shown in the drawings), where:
step S1041, if the pixel difference value is smaller than the preset pixel difference value threshold corresponding to the target test area, sequentially determining, according to the order from high to low, whether the pixel difference value corresponding to each of the plurality of test areas is not greater than the preset pixel difference value threshold corresponding to each of the plurality of test areas, based on the occurrence probability of the ghost corresponding to each of the plurality of test areas, where the test areas are test areas other than the target test area.
In step S1042, if the pixel differences corresponding to all the regions to be tested are not greater than the preset pixel difference threshold, it is determined that no ghost defects exist.
Step S1043, otherwise, determining that the ghost defect exists.
Specifically, the determination is sequentially performed in order of the occurrence probability of the ghost from high to low, so as to perform the determination in a targeted manner. For example, the pixel difference value of the test area for judging the occurrence probability of the afterimage and the corresponding preset pixel difference value threshold value are judged until the judgment of all the test areas is completed. Further, if the pixel difference values corresponding to all the areas to be tested are not greater than the corresponding preset pixel difference value threshold values, the fact that no residual shadow exists at any position in the LCD display screen is indicated, and therefore it can be determined that no residual shadow defect exists. It can be understood that, because the degree of influence of the ghost images at different positions on the viewing of the user is different, the pixel difference value threshold corresponding to different test areas is also different, and the test areas are judged in a targeted manner by setting different pixel difference value threshold for different test areas, so that the accuracy of ghost image detection is effectively improved.
Based on the above embodiment, if yes, sequentially judging the pixel difference value and the corresponding preset pixel difference value threshold according to the respective corresponding ghost occurrence probability of the to-be-tested region from high to low according to the respective corresponding ghost occurrence probability of the to-be-tested region, so as to comprehensively test the LCD display screen; the degree of influence of the ghost shadows of different positions of the multiple areas to be tested on the watching of the user is different, so that the detection accuracy of the ghost shadows is effectively improved by pertinently judging the different areas to be tested based on corresponding preset pixel difference value thresholds; further, if the pixel difference values corresponding to all the areas to be tested are not larger than the preset pixel difference value threshold value corresponding to each area, determining that the residual shadow defect does not exist.
Further, in one implementation manner of the embodiment of the present application, after step S104 determines that the ghost defect exists after performing the operation otherwise, steps SA1 to SA4 (not shown in the drawings) are further included, where:
step SA1, obtaining respective corresponding residual image duration time of all the test areas.
Specifically, when the electronic equipment determines that the test area has the afterimage, starting time recording, and stopping recording time after the afterimage disappears so as to obtain the duration of the afterimage; further, if the residual image duration corresponding to any test region does not disappear within the maximum residual image duration threshold, the maximum residual image duration threshold may be determined as the residual image duration of the region. The maximum afterimage duration threshold may be empirically set and pre-input into the electronic device, and the embodiment of the present application does not limit the maximum afterimage duration threshold.
Step SA2, determining the residual image grades corresponding to all the test areas based on the corresponding relation between the preset duration and the residual image grade and the residual image duration.
Specifically, the corresponding relation between the preset duration and the ghost level is input into the electronic equipment in advance by a related technician, and the corresponding relation can be obtained based on historical data; it is understood that the probability of the ghost vanishing is smaller as the duration of the ghost is longer.
And step SA3, determining the ghost level corresponding to the LCD display screen based on the ghost level corresponding to each of all the test areas and the number information of the test areas.
Specifically, an average ghost level may be calculated to determine a second ghost level of the LCD display. Average ghost level=m 1 +M 2 +M 3 +.....+M i Wherein M is 1 In order to obtain the ghost image grade corresponding to the first detection area in the detection process, i is the number information of the detection areas in the LCD display screen, and the average ghost image grade is used as the ghost image grade corresponding to the LCD display screen, and the ghost image grade of a certain detection area is too high or the ghost image grade of a certain detection area is too low so as to avoid the large change of the ghost image detection grade of the LCD display screen. In the embodiment of the present application, preferably, the image sticking grades corresponding to the LCD display screen may be classified into a first grade, a second grade and a third grade.
And step SA4, generating a repair reminding event based on the first identification information and the ghost level of the LCD screen so as to carry out repair reminding of the LCD screen.
Specifically, the first identification information and the ghost level of the LCD display screen can be sent to a technician in a text reminding mode or a voice reminding mode so as to remind the technician that the LCD display screen needs to be repaired.
Based on the embodiment, the respective corresponding ghost duration of all the test areas is obtained, the respective corresponding ghost levels of all the test areas are determined based on the preset corresponding relation and the respective corresponding ghost duration, and the respective corresponding ghost levels of the LCD display screen are determined based on the respective corresponding ghost levels and the number information of all the test areas, so that the accuracy of determining the ghost levels of the LCD display screen is effectively improved; and generating a repair reminding event according to the first identification information and the ghost grade corresponding to the LCD display screen so as to remind related technicians of repairing the LCD display screen in time and avoid the LCD display screen from being in a long-time damage state.
Further, in an implementation manner of the embodiment of the present application, before generating the repair reminding event based on the first identification information and the ghost level corresponding to the LCD display screen, the method further includes:
judging whether the corresponding ghost image grade of the LCD display screen is not less than a preset maximum ghost image grade threshold value or not so as to determine the ghost image defect type information of the LCD display screen, wherein the ghost image defect type information comprises: permanent type of ghost defects and temporary type of ghost defects.
Correspondingly, generating a repair reminding event based on the first identification information and the ghost level corresponding to the LCD display screen comprises the following steps: if yes, generating a reminding event that the LCD display screen cannot be repaired based on the first identification information, the corresponding ghost level and the permanent ghost defect type of the LCD display screen.
Otherwise, based on the first identification information, the ghost level corresponding to the LCD screen and the temporary ghost defect type, generating a repairable reminding event of the LCD screen.
Specifically, the preset maximum ghost level threshold is input into the electronic device in advance, and the embodiment of the application does not limit the preset maximum ghost level threshold, so that the user can set the threshold by himself. It can be understood that when the ghost image level of the LCD display screen is smaller than the preset maximum ghost image level threshold, it indicates that the ghost images in the LCD display screen do not have a large influence on the viewing of the user, so that a repairable reminding event of the LCD display screen can be generated to remind a technician to repair the LCD display screen in time, and the influence on the LCD display screen is reduced. Further, the electronic device may provide repair suggestions to the relevant technician, wherein the repair suggestions may include: the embodiment of the application does not limit the screen resolution and the refresh frequency, and the technical personnel can repair the screen by combining experience.
If the ghost level of the LCD display screen is not less than the preset maximum ghost level threshold, the ghost level in the LCD display screen has a great influence on the watching of a user, the watching experience of the user is extremely poor, and the ghost which cannot be eliminated exists in the LCD display screen, so that a prompt event that the LCD display screen cannot be repaired needs to be generated to inform technicians that the LCD display screen cannot be repaired.
Based on the above embodiment, whether the ghost image grade corresponding to the LCD display screen is not less than the preset maximum ghost image grade threshold is determined, so as to determine the ghost image defect type information of the LCD display screen, and a corresponding reminding event is generated according to the ghost image defect type information, so that the LCD display screen is repaired in time.
Further, in one implementation manner of the embodiment of the present application, the method further includes:
denoising the image, wherein the image comprises: a first image and a second image;
determining a pixel value corresponding to a target test area in an image comprises:
and determining a pixel value corresponding to the target test area in the denoised image.
Specifically, denoising can be performed by means of mean filtering, median filtering or Gaussian filtering, the embodiment of the application does not limit a specific denoising process, and the image quality of a reference picture and a test picture can be effectively improved through denoising processing, so that the accuracy of detecting the residual shadow of the LCD display screen due to the image quality is reduced. The step may be to perform denoising processing on the reference image in the target area before step S101 and before step S102, that is, when the LCD display screen is switched to the reference image, and obtain a first pixel value corresponding to the target test area after denoising processing, and perform denoising processing on the test image in the target area when the LCD display screen is switched to the test image, and obtain a second pixel value corresponding to the target test area in the test image after denoising processing.
Based on the embodiment, the image is subjected to denoising processing, so that the image quality is effectively improved, the image noise is reduced, the influence of the noise on the image is reduced, and the accuracy of ghost detection of the LCD screen is effectively improved.
The foregoing embodiments describe a method for detecting a ghost of an LCD display from the perspective of a method flow, and the following embodiments describe a device for detecting a ghost of an LCD display from the perspective of a virtual module or a virtual unit, specifically the following embodiments.
An embodiment of the present application provides a device for detecting a ghost image of an LCD display, as shown in fig. 3, where the device for detecting a ghost image of an LCD display specifically includes:
the first pixel value obtaining module 210 is configured to control the LCD display screen to display a reference picture, obtain a reference image acquired by the image capturing device after the LCD display screen displays the reference picture, and determine a first pixel value corresponding to a target test area in the reference image;
the second pixel value obtaining module 220 is configured to control the LCD display screen to switch to the solid-color test screen, obtain a test image of the LCD display screen acquired by the camera device after the solid-color test screen is displayed, and determine a second pixel value corresponding to a target test area in the test image;
The judging module 230 is configured to judge whether a pixel difference value corresponding to the target test area is smaller than a preset pixel difference value threshold corresponding to the target test area after the reference picture and the test picture of the LCD display screen are controlled to be switched for a preset number of times, where the pixel difference value is obtained based on each first pixel value and each second pixel value; if yes, triggering the ghost defect determination absence module 240; otherwise, triggering the ghost defect determination existence module 250;
a ghost defect absence module 240 for determining that a ghost defect is absent;
the ghost defect determining module 250 is configured to determine that a ghost defect exists.
In one possible implementation manner of the embodiment of the present application, the ghost detection device for an LCD display screen further includes:
the target test area determining module is used for:
dividing a reference image to obtain a plurality of test areas;
acquiring first identification information of an LCD display screen, and determining a plurality of LCD display screens to be referred, of which the second identification information is identical to the first identification information, based on the first identification information and a preset LCD display screen identification information base;
acquiring residual image position information corresponding to each of a plurality of LCD display screens to be referred;
matching the position information of the ghost shadow of each LCD display screen to be referred with the position information of a plurality of test areas, and determining the occurrence probability of the ghost shadow corresponding to each of the plurality of test areas;
And selecting a test area corresponding to the highest ghost occurrence probability from the plurality of test areas as a target test area.
In one possible implementation manner of the embodiment of the present application, the ghost detection device for an LCD display screen further includes:
the area detection module to be tested is used for:
if the pixel difference value is smaller than the preset pixel difference value threshold value, sequentially judging whether the pixel difference value corresponding to each of the plurality of regions to be tested is not larger than the preset pixel difference value threshold value corresponding to each of the plurality of regions to be tested according to the occurrence probability of the residual shadow corresponding to each of the plurality of regions to be tested from high to low, wherein the region to be tested is a region to be tested except a target region;
if the pixel difference values corresponding to all the areas to be tested are not larger than the preset pixel difference value threshold values corresponding to the areas to be tested, determining that no residual shadow defect exists;
otherwise, determining that the ghost defect exists.
In one possible implementation manner of the embodiment of the present application, the ghost detection device for an LCD display screen further includes:
the ghost grade determining module is used for:
acquiring the duration time of the residual shadows corresponding to all the test areas respectively;
determining the residual image grade corresponding to each test area based on the corresponding relation between the preset duration time and the residual image grade and the residual image duration time;
Determining the ghost image grade corresponding to the LCD display screen based on the ghost image grade corresponding to each of all the test areas and the number information of the test areas;
and generating a repair reminding event based on the first identification information and the ghost grade corresponding to the LCD display screen so as to carry out repair prompt of the LCD display screen.
In one possible implementation manner of the embodiment of the present application, the ghost detection device for an LCD display screen further includes:
the ghost defect type information judging module is used for:
judging whether the corresponding ghost image grade of the LCD display screen is not less than a preset maximum ghost image grade threshold value or not so as to determine the ghost image defect type information of the LCD display screen, wherein the ghost image defect type comprises: permanent ghost defect type and temporary ghost defect type;
correspondingly, when the ghost level determining module executes the generation of the repair reminding event based on the first identification information and the ghost level corresponding to the LCD display screen, the ghost level determining module is used for:
if yes, generating a reminding event that the LCD display screen cannot be repaired based on the first identification information, the ghost level corresponding to the LCD display screen and the permanent ghost defect type;
otherwise, based on the first identification information, the ghost level corresponding to the LCD screen and the temporary ghost defect type, generating a repairable reminding event of the LCD screen.
In one possible implementation manner of the embodiment of the present application, the ghost detection device for an LCD display screen further includes:
a pixel value difference determining module, configured to:
determining a plurality of pixel difference values based on each first pixel value and a second pixel value corresponding to each first pixel value;
from the plurality of pixel differences, a maximum pixel value is selected as the pixel difference.
In one possible implementation manner of the embodiment of the present application, the ghost detection device for an LCD display screen further includes:
the denoising module is used for:
denoising the image, wherein the image comprises: a first image and a second image;
when determining a pixel value corresponding to a target test area in an image, the method is used for:
and determining a pixel value corresponding to the target test area in the denoised image.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the device for detecting the ghost of the LCD display screen described above may refer to the corresponding process in the foregoing method embodiment, and will not be described herein again.
An embodiment of the present application provides an electronic device, as shown in fig. 4, fig. 4 is a schematic structural diagram of the electronic device provided in the embodiment of the present application, and an electronic device 300 shown in fig. 4 includes: a processor 301 and a memory 303. Wherein the processor 301 is coupled to the memory 303, such as via a bus 302. Optionally, the electronic device 300 may also include a transceiver 304. It should be noted that, in practical applications, the transceiver 304 is not limited to one, and the structure of the electronic device 300 is not limited to the embodiment of the present application.
The processor 301 may be a CPU (Central Processing Unit ), general purpose processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field Programmabl eGate Array, field programmable gate array) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with the disclosure of embodiments of the application. Processor 301 may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.
Bus 302 may include a path to transfer information between the components. Bus 302 may be a PCI (Peripheral Component Interconnect, peripheral component interconnect Standard) bus or an EISA (Extended Industry Standard Architecture ) bus, or the like. Bus 302 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 4, but not only one bus or one type of bus.
The Memory 303 may be, but is not limited to, a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory ) or other type of dynamic storage device that can store information and instructions, an EEPROM (Electrically Erasable Programmable Read Only Memory ), a CD-ROM (Compact Disc Read Only Memory, compact disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The memory 303 is used for storing application program codes for executing embodiments of the present application and is controlled to be executed by the processor 301. The processor 301 is configured to execute the application code stored in the memory 303 to implement what is shown in the foregoing method embodiments.
Among them, electronic devices include, but are not limited to: mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 4 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the application.
Embodiments of the present application provide a computer-readable storage medium having a computer program stored thereon, which when run on a computer, causes the computer to perform the corresponding method embodiments described above.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
The foregoing is only a partial embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations should and are intended to be comprehended within the scope of the present application.
Claims (10)
1. The method for detecting the ghost shadow of the LCD screen is characterized by comprising the following steps:
controlling an LCD display screen to display a reference picture, acquiring a reference image acquired by an image pickup device after the LCD display screen displays the reference picture, and determining a first pixel value corresponding to a target test area in the reference image;
the LCD display screen is controlled to be switched to a pure-color test picture, a test image after the pure-color test picture is displayed on the LCD display screen, which is acquired by the camera device, is acquired, and a second pixel value corresponding to a target test area in the test image is determined;
after switching the reference picture and the test picture of the LCD display screen for preset times, judging whether the pixel difference value corresponding to the target test area is smaller than a preset pixel difference value threshold corresponding to the target test area, wherein the pixel difference value is obtained based on each first pixel value and each second pixel value;
if yes, determining that no ghost defects exist; otherwise, determining that the ghost defect exists.
2. The method for detecting an afterimage of an LCD display screen according to claim 1, further comprising, before determining the first pixel value corresponding to the target test area in the reference image:
Dividing the reference image to obtain a plurality of test areas;
acquiring first identification information of an LCD display screen, and determining a plurality of LCD display screens to be referred, of which second identification information is the same as the first identification information, based on the first identification information and a preset LCD display screen identification information base;
acquiring residual image position information corresponding to each of a plurality of LCD display screens to be referred;
matching the position information of the afterimage of each LCD display screen to be referred with the position information of the plurality of test areas, and determining the occurrence probability of the afterimage corresponding to each of the plurality of test areas;
and selecting a test area corresponding to the highest ghost occurrence probability from the plurality of test areas as a target test area.
3. The method for detecting residual shadows on an LCD display screen according to claim 2, further comprising:
if the pixel difference value is smaller than the preset pixel difference value threshold value, sequentially judging whether the pixel difference value corresponding to each of a plurality of regions to be tested is not larger than the preset pixel difference value threshold value corresponding to each of the regions to be tested according to the sequence from high to low of the occurrence probability of the residual shadows based on the occurrence probability of the residual shadows corresponding to each of the regions to be tested, wherein the regions to be tested are the regions to be tested except for the target region;
If the pixel difference values corresponding to all the areas to be tested are not larger than the preset pixel difference value threshold values corresponding to the areas to be tested, determining that no residual shadow defect exists;
otherwise, determining that the ghost defect exists.
4. The method for detecting the ghost shadow of the LCD panel according to claim 3, wherein if the ghost shadow defect exists, the method further comprises:
acquiring the duration time of the residual shadows corresponding to all the test areas respectively;
determining the residual image grade corresponding to each test area based on the corresponding relation between the preset duration and the residual image grade and the residual image duration;
determining the ghost image grade corresponding to the LCD display screen based on the ghost image grade corresponding to each of all the test areas and the number information of the test areas;
and generating a repair reminding event based on the first identification information and the ghost level corresponding to the LCD display screen so as to carry out repair reminding of the LCD display screen.
5. The method for detecting a ghost image on an LCD screen according to claim 4, wherein before generating a repair reminder event based on the first identification information and the ghost image level corresponding to the LCD screen, further comprises:
judging whether the ghost image grade corresponding to the LCD display screen is not smaller than a preset maximum ghost image grade threshold value or not so as to determine the ghost image defect type information of the LCD display screen, wherein the ghost image defect type comprises: permanent ghost defect type and temporary ghost defect type;
Correspondingly, the generating a repair reminding event based on the first identification information and the ghost level corresponding to the LCD display screen includes:
if yes, generating a reminding event that the LCD display screen cannot be repaired based on the first identification information, the ghost level corresponding to the LCD display screen and the permanent ghost defect type;
otherwise, generating an LCD display screen repairable reminding event based on the first identification information, the corresponding ghost level of the LCD display screen and the temporary ghost defect type.
6. The method for detecting residual shadows on an LCD panel according to claim 1, wherein the determining process of the pixel difference value comprises:
determining a plurality of pixel differences based on each first pixel value and the second pixel value corresponding to each first pixel value;
and selecting the maximum pixel value from the pixel differences as the pixel difference.
7. The method for detecting residual shadows on an LCD display screen according to claim 1, further comprising:
denoising the image, wherein the image comprises: a first image and a second image;
determining a pixel value corresponding to a target test area in an image comprises:
And determining a pixel value corresponding to the target test area in the denoised image.
8. The utility model provides a incomplete shadow detection device of LCD display screen which characterized in that includes:
the first pixel value acquisition module is used for controlling the LCD display screen to display a reference picture, acquiring a reference image acquired by the camera device after the LCD display screen displays the reference picture, and determining a first pixel value corresponding to a target test area in the reference image;
the second pixel value acquisition module is used for controlling the LCD display screen to switch to a test picture, acquiring a test image of the LCD display screen acquired by the camera device after the LCD display screen displays a pure-color test picture, and determining a second pixel value corresponding to a target test area in the test image;
the judging module is used for judging whether the pixel difference value corresponding to the target test area is smaller than a preset pixel difference value threshold value corresponding to the target test area after the reference picture and the test picture of the LCD display screen are controlled to be switched for preset times, wherein the pixel difference value is obtained based on each first pixel value and each second pixel value; if yes, triggering the module without the ghost defect; otherwise, triggering a ghost defect existence module;
The image sticking defect absence module is used for determining that the image sticking defect is absent;
and the ghost defect determining module is used for determining that the ghost defect exists.
9. An electronic device, comprising:
at least one processor;
a memory;
at least one application program, wherein the at least one application program is stored in the memory and configured to be executed by the at least one processor, the at least one application program configured to: a method of detecting a ghost of an LCD panel according to any one of claims 1 to 7.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed in a computer, causes the computer to execute the method of detecting a ghost of an LCD display screen according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310918650.3A CN116953968A (en) | 2023-07-25 | 2023-07-25 | Method, device, equipment and medium for detecting ghost shadow of LCD display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310918650.3A CN116953968A (en) | 2023-07-25 | 2023-07-25 | Method, device, equipment and medium for detecting ghost shadow of LCD display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116953968A true CN116953968A (en) | 2023-10-27 |
Family
ID=88445825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310918650.3A Pending CN116953968A (en) | 2023-07-25 | 2023-07-25 | Method, device, equipment and medium for detecting ghost shadow of LCD display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116953968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117541578A (en) * | 2024-01-04 | 2024-02-09 | 深圳市鑫显光电科技有限公司 | High-performance full-view angle liquid crystal display screen detection method and system |
-
2023
- 2023-07-25 CN CN202310918650.3A patent/CN116953968A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117541578A (en) * | 2024-01-04 | 2024-02-09 | 深圳市鑫显光电科技有限公司 | High-performance full-view angle liquid crystal display screen detection method and system |
| CN117541578B (en) * | 2024-01-04 | 2024-04-16 | 深圳市鑫显光电科技有限公司 | High-performance full-view angle liquid crystal display screen detection method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107509107B (en) | Method, device and equipment for detecting video playing fault and readable medium | |
| US8238640B2 (en) | Display testing apparatus and method | |
| EP2975602B1 (en) | Method and device for determining the level of residual image of display | |
| US8345950B2 (en) | System and method for testing a multimeter | |
| CN108769776B (en) | Title subtitle detection method and device and electronic equipment | |
| US8289397B2 (en) | System and method for testing a digital camera module | |
| CN116953968A (en) | Method, device, equipment and medium for detecting ghost shadow of LCD display screen | |
| TW201401258A (en) | Liquid crystal display and detecting method thereof | |
| CN110620887B (en) | Image generation device and image generation method | |
| US20150178949A1 (en) | Apparatus for detecting region of interest and method thereof | |
| US20110285846A1 (en) | Electronic device and method for monitoring specified area | |
| CN111855149A (en) | Display panel ghost shadow testing method and device and computer equipment | |
| CN101487934B (en) | Optical detection apparatus and method | |
| CN115330789A (en) | Screen defect detection method, device, equipment and readable storage medium | |
| CN1489394A (en) | Display apparatus for detecting anormal picture signal and method thereof | |
| CN114764779A (en) | Computing device and defect detection method for near-eye display device | |
| CN112162888A (en) | Method and device for determining reason of black screen of display and computer storage medium | |
| CN109144868B (en) | Page judgment method and device | |
| CN115022611B (en) | VR picture display method, electronic device and readable storage medium | |
| US20220292662A1 (en) | Information processing apparatus,information processing method,and non-transitory computer-readable storage medium | |
| CN113990263B (en) | Backlight processing method and device for display screen, storage medium and electronic equipment | |
| US20190087053A1 (en) | Method, electronic device, and apparatus for touch-region calibration | |
| CN108696747A (en) | A kind of video measurement method and apparatus | |
| CN114638831A (en) | Image analysis method and device | |
| CN113554583A (en) | Detection method and detection system for display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |