CN114241959A - Abnormal light point detection method, display device and storage medium - Google Patents
Abnormal light point detection method, display device and storage medium Download PDFInfo
- Publication number
- CN114241959A CN114241959A CN202111371785.XA CN202111371785A CN114241959A CN 114241959 A CN114241959 A CN 114241959A CN 202111371785 A CN202111371785 A CN 202111371785A CN 114241959 A CN114241959 A CN 114241959A
- Authority
- CN
- China
- Prior art keywords
- lamp point
- abnormal
- point
- lamp
- target
- 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.)
- Granted
Links
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 210
- 238000001514 detection method Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 34
- 239000011159 matrix material Substances 0.000 claims description 13
- 230000005856 abnormality Effects 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 6
- 230000002547 anomalous effect Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The application relates to the technical field of display, in particular to an abnormal light point detection method, a display device, computer equipment and a storage medium, wherein the method comprises the following steps: sequentially taking any lamp point of the display device as a target lamp point, setting a preset area by taking the target lamp point as a center lamp point, and determining an abnormal index of the target lamp point based on a difference value of initial correction coefficients of each lamp point and the target lamp point in the preset area and a distance value between each lamp point and the target lamp point in the preset area; determining a first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and a preset threshold value; and determining the position of the abnormal lamp point based on the connected component detection result of the first abnormal lamp point mask image. According to the invention, the abnormal lamp point can be rapidly and accurately determined by using the abnormal index of the target lamp point in the preset area and using the connected domain detection.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a method for detecting abnormal light points, a display device, and a storage medium.
Background
The LED display screen is composed of a plurality of LED display modules, and the LED display screen can carry out single-box correction or whole-screen correction on the LED display modules before leaving factories or on site. When the photosensitive elements of various used imaging devices accumulate dust in the long-time use process or the screen body is corrected, the LED lamp points with dust after cleaning the LED display screen after correction can be partially lighted, the LED lamp points can not be lighted or the brightness is too low during correction, but the LED lamp points at the position after replacing the LED lamp points after correction can be partially lighted, so that when collected image data are corrected, the brightness of some LED lamp points can be influenced by the situations, the collected brightness is lower than that of the actual lamp points, and a larger correction coefficient value can be given when the correction coefficient of the LED lamp points is finally calculated, so that under the condition of starting correction, the brightness of the LED lamp points is actually higher than that of other LED lamp points, and the uniformity of the whole LED display screen is finally greatly reduced.
In the prior art, eyes are usually used manually to find the positions of abnormal lamp points on an LED display screen, and then the correction coefficients of the LED lamp points are manually adjusted, but the positions of all the abnormal lamp points are difficult to find by using the eyes, and the time is long.
Disclosure of Invention
In view of the above, it is desirable to provide an abnormal lighting point detecting method, a display device, and a storage medium.
In a first aspect, an embodiment of the present invention provides an abnormal light point detection method, applied to a display device, where the method includes:
sequentially taking any lamp point of the display device as a target lamp point, setting a preset area by taking the target lamp point as a center lamp point, and determining an abnormal index of the target lamp point based on a difference value of initial correction coefficients of each lamp point and the target lamp point in the preset area and a distance value between each lamp point and the target lamp point in the preset area;
determining a first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and a preset threshold value;
and determining the position of the abnormal lamp point based on the connected component detection result of the first abnormal lamp point mask image.
In an embodiment, the determining the abnormality indicator of the target lamp point based on the difference between the initial correction coefficients of each lamp point and the target lamp point in the preset region and the distance value between each lamp point and the target lamp point in the preset region includes:
determining the weight of each lamp point in the preset area based on the difference value of the initial correction coefficient of each lamp point and the target lamp point in the preset area and the distance value between each lamp point and the target lamp point in the preset area;
and determining the abnormal index of the target lamp point based on the weight of each lamp point in the preset area and the initial correction coefficient of the target lamp point.
In an embodiment, the determining the abnormality indicator of the target lamp point based on the weight of each lamp point in the preset area and the initial correction coefficient of the target lamp point includes:
based on the weight of each lamp point in the preset area, obtaining the weight sum W of the weights of all the lamp points in the preset areasum；
The abnormal index of the target lamp point is calculated by adopting the following formula:
Index＝Wsum*(1-X(i，j))；
wherein Index represents an abnormality Index, X(i，j)A correction coefficient indicating a target lamp point, and (i, j) coordinates indicating the target lamp point.
In an embodiment, after the determining the first abnormal light point mask map, the method further includes:
corroding and then expanding the first abnormal lamp point mask map to obtain a second abnormal lamp point mask map;
and determining the position of the abnormal lamp point based on the connected component detection result of the second abnormal lamp point mask image.
In an embodiment, the method further comprises:
determining an adjusting coefficient corresponding to the abnormal lamp point based on a connected domain detection result of the first abnormal lamp point mask map;
and determining a final correction coefficient of the abnormal lamp point based on the initial correction coefficient and the adjustment coefficient of the abnormal lamp point, and correcting the abnormal lamp point based on the final correction coefficient.
In an embodiment, the determining, based on the connected component detection result of the first abnormal light point mask map, an adjustment coefficient corresponding to the abnormal light point includes:
taking the mean value of the initial correction coefficients of the abnormal lamp points in each connected domain in the detection result of the connected domain as an original value;
taking the average value of the initial correction coefficients of the normal lamp points as a target value;
and taking the ratio of the target value to the original value as an adjusting coefficient of the abnormal lamp point in each connected domain.
In an embodiment, the determining, based on the connected component detection result of the first abnormal light point mask map, an adjustment coefficient corresponding to an abnormal light point further includes:
setting the adjustment coefficient of the lamp points in the non-connected domain to be 1, and obtaining an adjustment coefficient matrix based on the adjustment coefficients of the abnormal lamp points in each connected domain;
and correcting abnormal lamp points based on the adjustment coefficient matrix.
In an embodiment, the determining a final correction coefficient for the abnormal lamp point based on the initial correction coefficient and the adjustment coefficient for the abnormal lamp point, and correcting the abnormal lamp point based on the final correction coefficient includes:
multiplying the initial correction coefficient of the abnormal lamp point by the adjustment coefficient to obtain a final correction coefficient;
and correcting the abnormal lamp points by using the final correction coefficient.
In a second aspect, an embodiment of the present invention provides a display device, including a display module including a plurality of light points, and an abnormal light point detecting device connected to the display module and used for detecting an abnormal light point, where the abnormal light point detecting device includes:
the first determining module is used for setting a preset area by taking any one lamp point of the display module as a target lamp point and taking the target lamp point as a center lamp point in sequence, and determining an abnormal index of the target lamp point based on a difference value of initial correction coefficients of each lamp point and the target lamp point in the preset area and a distance value between each lamp point and the target lamp point in the preset area;
the second determining module is used for determining the first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and the preset threshold value;
and the third determining module is used for determining the position of the abnormal lamp point based on the connected component detection result of the first abnormal lamp point mask image.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method in the first aspect are implemented.
The method, the device and the storage medium set the preset area by taking any lamp point of the display device as a target lamp point and taking the target lamp point as a center lamp point in sequence, and determine the abnormal index of the target lamp point based on the difference value of the initial correction coefficient of each lamp point in the preset area and the initial correction coefficient of the target lamp point and the distance value of each lamp point in the preset area and the target lamp point; determining a first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and a preset threshold value; and determining the position of the abnormal lamp point based on the connected component detection result of the first abnormal lamp point mask image. According to the invention, the abnormal lamp point can be rapidly and accurately determined by using the abnormal index of the target lamp point in the preset area and using the connected domain detection.
Drawings
FIG. 1 is a diagram illustrating an exemplary embodiment of an abnormal lighting point detection method;
FIG. 2 is a schematic flow chart illustrating a method for detecting abnormal lighting in one embodiment;
FIG. 3 is a flowchart illustrating an exemplary method for determining an anomaly indicator;
FIG. 4 is a flowchart illustrating an abnormal lighting point calibration method according to an embodiment;
FIG. 5 is a flow chart illustrating an embodiment adjustment factor determination method;
fig. 6 is a schematic structural diagram of an abnormal lighting point detection device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The abnormal light point detection method provided by the application can be applied to the application environment shown in fig. 1. Wherein the terminal 102 communicates with the server 104 via a network. The terminal 102 firstly sequentially takes any lamp point of the display device as a target lamp point, sets a preset area by taking the target lamp point as a center lamp point, and determines an abnormal index of the target lamp point based on a difference value of initial correction coefficients of each lamp point and the target lamp point in the preset area and a distance value between each lamp point and the target lamp point in the preset area; determining a first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and a preset threshold value; based on the connected component detection result of the first abnormal light point mask map, the position of the abnormal light point is determined, and the terminal 102 sends the position of the abnormal light point to the server 104. The terminal 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices, and the server 104 may be implemented by an independent server or a server cluster formed by a plurality of servers.
In an embodiment, as shown in fig. 2, a method for detecting abnormal light points is provided, which is described by taking the method as an example applied to the terminal in fig. 1, and includes the following steps:
s202: and sequentially taking any lamp point of the display device as a target lamp point, setting a preset area by taking the target lamp point as a center lamp point, and determining the abnormal index of the target lamp point based on the difference value of the initial correction coefficients of each lamp point and the target lamp point in the preset area and the distance value between each lamp point and the target lamp point in the preset area.
The display device in this embodiment may be an LED display, or may be another type of display.
The initial correction coefficient in the present embodiment may be read out from the storage hardware of the display device.
It should be noted that the abnormal lamp points after correction usually appear in the form of abnormal blocks, that is, one abnormal block includes a plurality of abnormal lamp points, the initial correction coefficient of each lamp point in the abnormal block is greater (or less) than the initial correction coefficient of the lamp point in the non-abnormal block, and the initial correction coefficients of each lamp point in the abnormal block are relatively close, while the initial correction coefficients between the normal lamp points are relatively different.
Based on the above characteristics, in this embodiment, a preset region is set by using the target lamp point as the center lamp point, and the size of the preset region can be set according to actual requirements. And determining an abnormal index of the target lamp point based on the difference value of the initial correction coefficients of each lamp point and the target lamp point in the preset area and the distance value between each lamp point and the target lamp point in the preset area, wherein if the preset area is in the abnormal block, the obtained abnormal index is lower, and if the preset area is not in the abnormal block, the obtained abnormal index is higher.
S204: and determining a first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and a preset threshold value.
The preset threshold value can be set according to actual requirements, and the larger the preset threshold value is, the more lamp points are detected as abnormal lamp points. In an example embodiment, the 5% quantile of all the abnormal indexes is selected as a preset threshold.
And comparing the abnormal indexes with a preset threshold respectively, wherein the abnormal indexes are smaller than the preset threshold and are set to be 1, and the abnormal indexes are larger than the preset threshold and are set to be 0, so as to obtain a preliminary abnormal lamp point mask map.
S206: and determining the position of the abnormal lamp point based on the connected component detection result of the first abnormal lamp point mask image.
And finding out and marking adjacent pixels with the same pixel value aiming at the binary image by connected component detection. In this embodiment, in the first abnormal light point mask map, the light point corresponding to the abnormal indicator smaller than the preset threshold is set to 1, so that the finally obtained connected domain is the position of the abnormal light point.
It should be noted that the abnormal light points in the present embodiment may include, but are not limited to, abnormal points such as bright points, dark points, broken screens, horizontal and vertical stripes, and the like.
In this embodiment, the abnormal light point can be determined quickly and accurately by using the abnormal index of the target light point in the preset area and by using the connected domain detection.
In an embodiment, as shown in fig. 3, the determining the abnormality indicator of the target lamp point based on the difference between the initial correction coefficients of each lamp point in the preset region and the target lamp point and the distance value between each lamp point in the preset region and the target lamp point includes:
s302: determining the weight of each lamp point in the preset area based on the difference value of the initial correction coefficient of each lamp point and the target lamp point in the preset area and the distance value between each lamp point and the target lamp point in the preset area;
s304: and determining the abnormal index of the target lamp point based on the weight of each lamp point in the preset area and the initial correction coefficient of the target lamp point.
For a certain target lamp point, calculating the absolute value d of the difference between the initial correction coefficients of the certain lamp point and the target lamp point in a preset areaiff_vCalculating the distance value between a certain lamp point and the target lamp point in the preset area as diff_dThen the weight of the lamp point is W ═ diff_v*diff_dThe smaller the weight, the closer the lamp point is to the target lamp point, and the more similar the initial correction coefficient. Adding the weights of all the lamp points in the preset area to obtain a weight sum WsumWeight sum WsumSmaller also indicates more similar correction factors in the field. The abnormal index of the target lamp point is calculated by adopting the following formula:
Index＝Wsum*(1-X(i，j))；
wherein Index represents an abnormality Index, X(i，j)A correction coefficient indicating a target lamp point, and (i, j) coordinates indicating the target lamp point.
The smaller the abnormal Index is, the higher the probability that the lamp point is an abnormal lamp point is, the abnormal indexes of all the lamp points are calculated, and an abnormal Index matrix is obtained.
In some other embodiments, the product of the square of the difference between the initial correction coefficients of each lamp point and the target lamp point in the preset region and the distance value between each lamp point and the target lamp point in the preset region may be used as the weight of each lamp point in the preset region.
It should be noted that, the extended lamp points are obtained by extending the edge of the lamp points on the edge of the display device, and then the abnormal index of the edge lamp points is calculated by the above method, where the extended lamp points may be obtained by mirror image copy of the edge lamp points.
In one embodiment, after determining the first abnormal light point mask map, the method further comprises:
s205: and carrying out corrosion and re-expansion treatment on the first abnormal lamp point mask image to obtain a second abnormal lamp point mask image.
The first abnormal lamp point mask image is corroded and then expanded to eliminate noise points, and the position of the abnormal lamp point is determined based on the connected domain detection result of the second abnormal lamp point mask image, so that the accuracy of abnormal lamp point detection can be improved.
In an embodiment, as shown in fig. 4, the method further comprises:
s208: determining the position of the abnormal lamp point and an adjusting coefficient corresponding to the abnormal lamp point based on the connected domain detection result of the first abnormal lamp point mask map;
s210: and determining a final correction coefficient of the abnormal lamp point based on the initial correction coefficient and the adjustment coefficient of the abnormal lamp point, and correcting the abnormal lamp point based on the final correction coefficient.
In this embodiment, the position of the abnormal light point and the adjustment coefficient corresponding to the abnormal light point are determined based on the detection result of the connected component of the first abnormal light point mask map, the final correction coefficient of the abnormal light point is determined based on the initial correction coefficient and the adjustment coefficient of the abnormal light point, and the automatic correction of the abnormal light point is realized based on the final correction coefficient.
In an embodiment, as shown in fig. 5, the determining, based on the connected component detection result of the first abnormal light point mask map, an adjustment coefficient corresponding to the abnormal light point includes:
s502: taking the mean value of the initial correction coefficients of the abnormal lamp points in each connected domain in the detection result of the connected domain as an original value;
s504: taking the average value of the initial correction coefficients of the normal lamp points as a target value;
s506: and taking the ratio of the target value to the original value as an adjusting coefficient of the abnormal lamp point in each connected domain.
Specifically, the average value of the initial correction coefficients of the abnormal lamp points in each communication domain is used as an original value, the lamp points at the position of 0 value in the first abnormal lamp point mask map or the second abnormal lamp point mask map, that is, the average value of the initial correction coefficients of the normal lamp points is used as a target value, and the ratio of the target value to the original value is used as the adjustment coefficient of the abnormal lamp points in each communication domain.
It should be noted that, in this embodiment, each connected domain is individually adjusted in such a way that the average value of the connected domain is changed into the average value of the unconnected domain, so that different abnormal blocks can be repaired, and the difference between the correction coefficients in the abnormal blocks is retained, so that after the abnormal blocks are repaired, the uniformity can be ensured.
In another embodiment, the adjustment coefficient of the non-connected lamp point is set to 1, and the abnormal lamp point in the connected domain is set to a corresponding adjustment coefficient, so as to obtain an adjustment coefficient matrix, and the adjustment coefficient matrix can be used to realize the simultaneous correction of a plurality of abnormal lamp points, thereby improving the correction efficiency.
In one embodiment, the initial correction coefficient of the abnormal lamp point is multiplied by the adjustment coefficient to generate a final correction coefficient, and the abnormal lamp point is corrected by using the final correction coefficient.
In another embodiment, the initial correction coefficient matrix and the adjustment coefficient matrix may be multiplied correspondingly to generate a final correction coefficient matrix, and the final correction coefficient matrix may be used to correct abnormal light points in the display device at the same time, so as to improve the correction efficiency.
It should be understood that, although the steps in the above-described flowcharts are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the above-mentioned flowcharts may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or the stages is not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a part of the steps or the stages in other steps.
In an embodiment, as shown in fig. 6, the present invention provides a display device, which includes a display module 602 composed of a plurality of light points, and an abnormal light point detecting device 604 connected to the display module 602 for detecting an abnormal light point, where the abnormal light point detecting device 604 includes:
a first determining module 6042, configured to sequentially use any one of the lamp points of the display module as a target lamp point, use the target lamp point as a center lamp point, set a preset region, and determine an abnormal index of the target lamp point based on a difference between initial correction coefficients of each lamp point in the preset region and the target lamp point and a distance value between each lamp point in the preset region and the target lamp point;
a second determining module 6044, configured to determine a first abnormal light point mask map based on a comparison result between the abnormal index of each target light point and a preset threshold;
a third determining module 6046, configured to determine a position of the abnormal light point based on the connected component detection result of the first abnormal light point mask map.
In an embodiment, the first determining module is specifically configured to:
determining the weight of each lamp point in the preset area based on the difference value of the initial correction coefficient of each lamp point and the target lamp point in the preset area and the distance value between each lamp point and the target lamp point in the preset area;
and determining the abnormal index of the target lamp point based on the weight of each lamp point in the preset area and the initial correction coefficient of the target lamp point.
In an embodiment, the determining the abnormality indicator of the target lamp point based on the weight of each lamp point in the preset area and the initial correction coefficient of the target lamp point includes:
based on the weight of each lamp point in the preset area, obtaining the weight sum W of the weights of all the lamp points in the preset areasum；
The abnormal index of the target lamp point is calculated by adopting the following formula:
Index＝Wsum*(1-X(i，j))；
wherein Index represents an abnormality Index, X(i，j)A correction coefficient indicating a target lamp point, and (i, j) coordinates indicating the target lamp point.
In one embodiment, the method further comprises:
the fourth determining module is used for carrying out corrosion re-expansion treatment on the first abnormal lamp point mask map to obtain a second abnormal lamp point mask map; and determining the position of the abnormal lamp point based on the connected component detection result of the second abnormal lamp point mask image.
In one embodiment, the method further comprises:
a fifth determining module, configured to determine, based on a connected component detection result of the first abnormal light point mask map, an adjustment coefficient corresponding to the abnormal light point;
and the sixth determining module is used for determining a final correction coefficient of the abnormal lamp point based on the initial correction coefficient and the adjustment coefficient of the abnormal lamp point and correcting the abnormal lamp point based on the final correction coefficient.
In an embodiment, the fifth determining module is specifically configured to:
taking the mean value of the initial correction coefficients of the abnormal lamp points in each connected domain in the detection result of the connected domain as an original value;
taking the average value of the initial correction coefficients of the normal lamp points as a target value;
and taking the ratio of the target value to the original value as an adjusting coefficient of the abnormal lamp point in each connected domain.
In an embodiment, the fifth determining module is further configured to:
setting the adjustment coefficient of the lamp points in the non-connected domain to be 1, and obtaining an adjustment coefficient matrix based on the adjustment coefficients of the abnormal lamp points in each connected domain;
and correcting abnormal lamp points based on the adjustment coefficient matrix.
In an embodiment, the sixth determining module is specifically configured to:
multiplying the initial correction coefficient of the abnormal lamp point by the adjustment coefficient to obtain a final correction coefficient;
and correcting the abnormal lamp points by using the final correction coefficient.
For the specific limitation of the abnormal light point detection device, reference may be made to the above limitation on the abnormal light point detection method, which is not described herein again. All or part of the modules in the abnormal light point detection device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of any of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An abnormal light point detection method is applied to a display device, and is characterized by comprising the following steps:
sequentially taking any lamp point of the display device as a target lamp point, setting a preset area by taking the target lamp point as a center lamp point, and determining an abnormal index of the target lamp point based on a difference value of initial correction coefficients of each lamp point and the target lamp point in the preset area and a distance value between each lamp point and the target lamp point in the preset area;
determining a first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and a preset threshold value;
and determining the position of the abnormal lamp point based on the connected component detection result of the first abnormal lamp point mask image.
2. The method of claim 1, wherein the determining the abnormality index of the target lamp point based on the difference between the initial correction coefficients of each lamp point and the target lamp point in the preset region and the distance value between each lamp point and the target lamp point in the preset region comprises:
determining the weight of each lamp point in the preset area based on the difference value of the initial correction coefficient of each lamp point and the target lamp point in the preset area and the distance value between each lamp point and the target lamp point in the preset area;
and determining the abnormal index of the target lamp point based on the weight of each lamp point in the preset area and the initial correction coefficient of the target lamp point.
3. The method of claim 2, wherein determining the abnormality index of the target lamp point based on the weight of each lamp point in the preset region and the initial correction coefficient of the target lamp point comprises:
based on the weight of each lamp point in the preset area, obtaining the weight sum W of the weights of all the lamp points in the preset areasum；
The abnormal index of the target lamp point is calculated by adopting the following formula:
Index＝Wsum*(1-X(i，j))；
wherein Index represents an abnormality Index, X(i，j)A correction coefficient indicating a target lamp point, and (i, j) coordinates indicating the target lamp point.
4. The method of claim 1, wherein after said determining the first anomalous light point mask map, the method further comprises:
corroding and then expanding the first abnormal lamp point mask map to obtain a second abnormal lamp point mask map;
and determining the position of the abnormal lamp point based on the connected component detection result of the second abnormal lamp point mask image.
5. The method according to any one of claims 1 to 4, further comprising:
determining an adjusting coefficient corresponding to the abnormal lamp point based on a connected domain detection result of the first abnormal lamp point mask map;
and determining a final correction coefficient of the abnormal lamp point based on the initial correction coefficient and the adjustment coefficient of the abnormal lamp point, and correcting the abnormal lamp point based on the final correction coefficient.
6. The method of claim 5, wherein determining the adjustment coefficient corresponding to the abnormal light point based on the connected component detection result of the first abnormal light point mask map comprises:
taking the mean value of the initial correction coefficients of the abnormal lamp points in each connected domain in the detection result of the connected domain as an original value;
taking the average value of the initial correction coefficients of the normal lamp points as a target value;
and taking the ratio of the target value to the original value as an adjusting coefficient of the abnormal lamp point in each connected domain.
7. The method of claim 6, wherein determining the adjustment factor corresponding to the abnormal light point based on the connected component detection result of the first abnormal light point mask map further comprises:
setting the adjustment coefficient of the lamp points in the non-connected domain to be 1, and obtaining an adjustment coefficient matrix based on the adjustment coefficients of the abnormal lamp points in each connected domain;
and correcting abnormal lamp points based on the adjustment coefficient matrix.
8. The method of claim 5, wherein determining a final correction coefficient for the abnormal lamp point based on the initial correction coefficient and the adjustment coefficient for the abnormal lamp point, and correcting the abnormal lamp point based on the final correction coefficient comprises:
multiplying the initial correction coefficient of the abnormal lamp point by the adjustment coefficient to obtain a final correction coefficient;
and correcting the abnormal lamp points by using the final correction coefficient.
9. A display device, comprising a display module composed of a plurality of light points, and an abnormal light point detection device connected with the display module and used for detecting abnormal light points, wherein the abnormal light point detection device comprises:
the first determining module is used for setting a preset area by taking any one lamp point of the display module as a target lamp point and taking the target lamp point as a center lamp point in sequence, and determining an abnormal index of the target lamp point based on a difference value of initial correction coefficients of each lamp point and the target lamp point in the preset area and a distance value between each lamp point and the target lamp point in the preset area;
the second determining module is used for determining the first abnormal lamp point mask map based on the comparison result of the abnormal indexes of the target lamp points and the preset threshold value;
and the third determining module is used for determining the position of the abnormal lamp point based on the connected component detection result of the first abnormal lamp point mask image.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111371785.XA CN114241959B (en) | 2021-11-18 | 2021-11-18 | Abnormal lamp spot detection method, display device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111371785.XA CN114241959B (en) | 2021-11-18 | 2021-11-18 | Abnormal lamp spot detection method, display device and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114241959A true CN114241959A (en) | 2022-03-25 |
| CN114241959B CN114241959B (en) | 2024-05-14 |
Family
ID=80750042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111371785.XA Active CN114241959B (en) | 2021-11-18 | 2021-11-18 | Abnormal lamp spot detection method, display device and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114241959B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015107326A1 (en) * | 2014-05-12 | 2015-11-12 | Lg Display Co., Ltd. | Organic light emitting diode display device and driving method therefor |
| CN105139800A (en) * | 2015-08-28 | 2015-12-09 | 西安诺瓦电子科技有限公司 | Abnormal lamp point processing method after correction of LED display device |
| CN105976753A (en) * | 2016-07-15 | 2016-09-28 | 西安诺瓦电子科技有限公司 | Abnormal light point detection and compensation method for correction of LED display device |
| CN107633806A (en) * | 2016-07-15 | 2018-01-26 | 西安诺瓦电子科技有限公司 | LED display blocks correction processing method |
| CN112102762A (en) * | 2020-09-30 | 2020-12-18 | 卡莱特（深圳）云科技有限公司 | Method and device for identifying abnormal light points of LED screen |
-
2021
- 2021-11-18 CN CN202111371785.XA patent/CN114241959B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015107326A1 (en) * | 2014-05-12 | 2015-11-12 | Lg Display Co., Ltd. | Organic light emitting diode display device and driving method therefor |
| CN105139800A (en) * | 2015-08-28 | 2015-12-09 | 西安诺瓦电子科技有限公司 | Abnormal lamp point processing method after correction of LED display device |
| CN105976753A (en) * | 2016-07-15 | 2016-09-28 | 西安诺瓦电子科技有限公司 | Abnormal light point detection and compensation method for correction of LED display device |
| CN107633806A (en) * | 2016-07-15 | 2018-01-26 | 西安诺瓦电子科技有限公司 | LED display blocks correction processing method |
| CN112102762A (en) * | 2020-09-30 | 2020-12-18 | 卡莱特（深圳）云科技有限公司 | Method and device for identifying abnormal light points of LED screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114241959B (en) | 2024-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180182285A1 (en) | Method and apparatus for establishing luminance compensation model, method and apparatus for compensating for luminance of display screen, and display device | |
| CN109903717B (en) | Identification method, compensation method and device for bright spot area of display panel | |
| CN110392305B (en) | Video static picture detection method, terminal and computer readable storage medium | |
| CN108270975B (en) | Exposure time determining method for image sensing | |
| US8433104B2 (en) | Image processing method for background removal | |
| WO2019041842A1 (en) | Image processing method and device, storage medium and computer device | |
| JP2007129600A (en) | Image data processor | |
| CN110807731A (en) | Method, apparatus, system and storage medium for compensating image dead pixel | |
| CN113658538A (en) | Brightness compensation data generation method, brightness compensation device and computer equipment | |
| CN110766711A (en) | Video shot segmentation method, system, device and storage medium | |
| CN113516939A (en) | Brightness correction method and device, display equipment, computing equipment and storage medium | |
| CN110288557B (en) | Infrared image restoration method, device, equipment and readable storage medium | |
| CN112070682A (en) | Method and device for compensating image brightness | |
| CN106971375B (en) | Image amplification processing method and device | |
| CN114241959B (en) | Abnormal lamp spot detection method, display device and storage medium | |
| CN115760653B (en) | Image correction method, device, equipment and readable storage medium | |
| CN112734719B (en) | Dead pixel detection method of image sensor, storage medium and shooting device | |
| CN109166511B (en) | Compression method for compensating gauge of display device | |
| CN113902644A (en) | Image processing method, device, equipment and storage medium | |
| KR101450259B1 (en) | Apparatus for correcting time variant defect of infrared detector | |
| KR20220040185A (en) | Mura evaluation apparatus for display panel and mura evaluation method | |
| US20210097693A1 (en) | Image processing circuit and method | |
| KR101713149B1 (en) | Bit Expansion Method and Apparatus | |
| CN116935769B (en) | Detection method and system for bad characteristics of OLED display module | |
| CN115691390B (en) | Display panel compensation method and device and display device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |