CN114446237A - OLED panel display compensation method and device, display equipment and storage medium - Google Patents
OLED panel display compensation method and device, display equipment and storage medium Download PDFInfo
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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Abstract
The application relates to an OLED panel display compensation method and device, display equipment and a storage medium. The method comprises the steps of obtaining compensation data of each pixel; extracting a deteriorated region in the OLED panel based on the average image level difference value of each pixel; acquiring the edge information amount of the input image data in the degradation area, and acquiring the compensation gain of the degradation area according to the edge information amount; the method comprises the steps of obtaining compensated input image data in a degradation region according to compensation data, input image data and compensation gain, identifying the degradation region in the OLED panel, calculating the compensation gain used for weighting the compensation data based on the edge information amount of the image data to be input in the degradation region, properly reducing compensation in the degradation region, and reducing the aging speed of the degradation region.
Description
Technical Field
The present application relates to the field of panel technologies, and in particular, to a display compensation method and apparatus for an OLED panel, a display device, and a storage medium.
Background
As the usage time increases, the OLED (Organic Light-Emitting Diode) panel may be degraded, thereby causing a decrease in display brightness of the OLED panel. The degradation degree of the OLED panel is affected by the brightness of the input image, and it is generally regulated that the degradation degree of the OLED panel displaying a bright image is greater than that of the OLED panel displaying a dark image. And the deterioration degree of each pixel on the OLED panel is also different from each other. When the OLED panel is degraded, a method of obtaining the compensation brightness according to the degradation degree of the OLED panel and adjusting the display brightness of the entire OLED panel according to the compensation brightness is generally adopted. The compensation brightness is proportional to the amount of current flowing into the OLED panel, and the larger the compensation brightness is, the larger the amount of current input into the OLED panel is. However, increasing the amount of current input to the OLED panel, which is equivalent to imposing stress on the deteriorated OLED panel, only accelerates the deterioration of the OLED panel, so that the lifetime of the OLED panel is further reduced.
Disclosure of Invention
In view of the above, it is necessary to provide a method and an apparatus for compensating display of an OLED panel, a display device and a storage medium.
In a first aspect, an embodiment of the present application provides an OLED panel display compensation method, including the following steps:
acquiring compensation data of each pixel;
extracting a deteriorated region in the OLED panel based on the average image level difference value of each pixel; the average picture level difference is the difference between the reference average picture level and the actual average picture level; a plurality of adjacent pixels in the degraded area having an average image level difference greater than or equal to a level difference threshold;
acquiring the amount of edge information of input image data in a degraded area, and acquiring a compensation gain of the degraded area according to the amount of edge information;
the compensated input image data in the degraded area is obtained based on the compensation data, the input image data, and the compensation gain.
Optionally, the step of obtaining the amount of edge information of the input image data in the degraded area and obtaining the compensation gain of the degraded area according to the amount of edge information includes the steps of:
dividing the degraded area into at least two sub-areas; the sub-region comprises a main region and at least one sub-region; the primary region is larger than the secondary region;
acquiring edge sub-information of input sub-image data in the sub-area, and acquiring compensation sub-gain of the sub-area according to the amount of the edge sub-information;
and selecting one of the compensation sub-gains as the compensation gain based on a preset rule.
Optionally, the preset rule is as follows:
and selecting the maximum value of the compensation sub-gains as the compensation gain.
Optionally, when the sub-region includes a main region and a sub-region, the preset rule is as follows:
obtaining a gain difference value of the compensation sub-gain corresponding to the sub-area and the compensation sub-gain corresponding to the main area;
if the gain difference is smaller than or equal to the gain difference threshold, selecting a compensation sub-gain corresponding to the main area as a compensation gain;
and if the gain difference is larger than the gain difference threshold, selecting the compensation sub-gain corresponding to the sub-area as the compensation gain.
Optionally, when the sub-region includes one main region and at least two sub-regions, the preset rule is as follows:
obtaining a gain difference value of the compensation sub-gain corresponding to the sub-area and the compensation sub-gain corresponding to each main area;
if the gain difference values are smaller than or equal to the gain difference value threshold, selecting the compensation sub-gain corresponding to the main area as the compensation gain;
if one gain difference value is larger than the gain difference value threshold value, selecting the compensation sub-gain corresponding to the gain difference value larger than the gain difference value threshold value as the compensation gain;
and if at least two gain difference values are larger than the gain difference value threshold value, selecting the compensation sub-gain corresponding to the maximum gain difference value as the compensation gain.
Optionally, each sub-region is a pixel matrix of N by N, where N is an integer greater than or equal to 5.
Optionally, after the step of obtaining the amount of edge information of the input image data in the degraded area and obtaining the compensation gain of the degraded area according to the amount of edge information, the method includes the steps of:
carrying out smooth filtering processing on the compensation gain;
the step of obtaining compensated input image data in the degraded area based on the compensation data, the input image data, and the compensation gain, comprises:
the compensated input image data in the degraded area is obtained based on the compensation data, the input image data, and the processed compensation gain.
Optionally, in the step of performing filter smoothing on the compensation gain:
and carrying out smooth filtering processing on the compensation gain based on a Gaussian smoothing operator.
Optionally, in the step of obtaining compensated input image data in the degraded area according to the compensation data, the input image data, and the compensation gain, the step of:
acquiring a product value of the compensation data, the input image data and the compensation gain;
the product value is used as the compensated input image data in the degraded area.
Optionally, the step of obtaining the amount of edge information of the input image data in the degraded area comprises:
the amount of edge information of the input image data in the degraded area is acquired based on the laplacian of gaussian operator.
In a second aspect, an embodiment of the present application provides an OLED panel display compensation apparatus, including:
the data acquisition module is used for acquiring compensation data of each pixel;
an area acquisition module for extracting a deteriorated area in the OLED panel based on the average image level difference of each pixel; the average picture level difference is the difference between the reference average picture level and the actual average picture level; a plurality of adjacent pixels in the degraded area having an average image level difference greater than or equal to a level difference threshold;
an information amount acquisition module for acquiring an edge information amount of the input image data in the degraded area;
the gain acquisition module is used for acquiring the compensation gain of the degraded area according to the edge information amount;
and the compensation module is used for obtaining the compensated input image data in the degradation region according to the compensation data, the input image data and the compensation gain.
In a third aspect, an embodiment of the present application provides a display device, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the method when executing the computer program.
In a fourth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the above method.
One of the above technical solutions has the following advantages and beneficial effects:
the OLED panel display compensation method comprises the following steps: acquiring compensation data of each pixel; extracting a deteriorated region in the OLED panel based on the average image level difference value of each pixel; acquiring the amount of edge information of input image data in a degraded area, and acquiring a compensation gain of the degraded area according to the amount of edge information; the method comprises the steps of obtaining compensated input image data in a degradation region according to compensation data, input image data and compensation gain, identifying the degradation region in the OLED panel, calculating the compensation gain used for weighting the compensation data based on the edge information amount of the image data to be input in the degradation region, properly reducing compensation in the degradation region, and reducing the aging speed of the degradation region.
Drawings
Fig. 1 is an application environment diagram of the OLED panel display compensation method in the embodiment of the present application.
Fig. 2 is a schematic diagram of a gaussian laplacian operator in an embodiment of the present application.
Fig. 3 is a schematic flowchart of the step of obtaining the compensation gain in the embodiment of the present application.
Fig. 4 is a schematic diagram of a gaussian smoothing operator in the embodiment of the present application.
Fig. 5 is a block diagram of a display compensation device of an OLED panel according to an embodiment of the present disclosure.
Fig. 6 is an internal structural view of a display device in an embodiment of the present application.
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.
In order to solve the aging problem of the OLED panel, as shown in fig. 1, there is provided an OLED panel display compensation method, including the steps of:
in step S11, compensation data for each pixel is acquired.
The compensation data is original data for compensating each pixel in the OLED panel, and the compensation data can be directly used for compensating each pixel in the OLED panel, but the aging condition of each area in the OLED panel is not considered by utilizing the compensation data for direct compensation. In one example, compensation data for each pixel in the OLED panel is obtained based on a DCC algorithm. The compensation of each pixel of the OLED panel is to supplement the luminance of each pixel, and specifically, the adjustment may be performed by changing the magnitude of the input level of each pixel.
A step S13 of extracting a deteriorated region in the OLED panel based on the average image level difference value of each pixel; the average picture level difference is the difference between the reference average picture level and the actual average picture level; a plurality of adjacent pixels having an average image level difference greater than or equal to a level difference threshold are included in the degraded area.
The Average Picture Level (APL) is an Average value of an Average component of the amplitude of the image signal during the line active period in the whole frame period excluding the line blanking period and the field blanking period, and is expressed by a percentage of a nominal value of the amplitude of the luminance signal. The degradation region is a region of the OLED panel where the degradation degree is high, and specifically, if a plurality of adjacent pixels having an average image level difference greater than or equal to a level difference threshold value are present, the region including the plurality of adjacent pixels is the degradation region. It should be noted that, since the average image level difference is a difference between the reference average image level and the actual average image level, before the step of extracting the degraded area in the OLED panel based on the average image level difference of each pixel, it is necessary to obtain the actual average image level of each pixel in the OLED panel, and then obtain a difference between the reference average image level and the actual average image level. Wherein the reference average picture level is preset according to actual requirements.
In step S15, the amount of edge information of the input image data in the degraded area is acquired, and the compensation gain of the degraded area is acquired according to the amount of edge information.
Wherein the input image data is an image to be displayed by the OLED panel. The input image data within the degraded area is an image to be displayed by the degraded area. The amount of edge information is used to characterize the image complexity of the input image data. In one example, the step of acquiring the amount of edge information of the input image data within the degraded area comprises: the amount of edge information of the input image data in the degraded area is acquired based on the laplacian of gaussian operator. It should be noted that the laplacian of gaussian is a two-dimensional isotropic measure of the second-order spatial derivative of the image. In one example, the laplacian of gaussian is a 5 by 5 laplacian of gaussian (as shown in fig. 2), where 5 by 5 includes 5 columns and 5 rows of pixels.
The compensation gain is equivalent to providing a weighting coefficient for the compensation data of each pixel in the degradation region, and is used for adjusting the compensation amount of each pixel in the degradation region, so that the compensation amount of each pixel in the degradation region is prevented from being improper, and the aging is accelerated. The compensation gain is inversely proportional to the amount of edge information, i.e., the larger the amount of edge information, the smaller the compensation gain, and conversely, the smaller the amount of edge information, the larger the compensation gain. The actual inverse proportion of the compensation gain to the amount of the edge information can be determined according to actual requirements.
In order to further optimize the compensation for each pixel in the degraded area, in conjunction with the flow of steps shown in fig. 1, fig. 3 shows the steps of acquiring the amount of edge information of the input image data in the degraded area, and acquiring the compensation gain of the degraded area according to the amount of edge information, including the steps of:
a step S151 of dividing the deteriorated region into at least two sub-regions; the sub-region comprises a main region and at least one sub-region; the primary region is larger than the secondary region.
The reason for dividing the degraded area into different sub-areas is to select an appropriate compensation gain to weight the compensation data due to the selection of the compensation gain. For example, the dividing of the degraded area into one main area and one sub-area, or the dividing of the degraded area into one main area and two sub-areas, or the dividing of the degraded area into one main area and three sub-areas, and the specific dividing into several sub-areas may be determined according to actual requirements. The sizes of the sub-regions may be equal or unequal, but it is necessary to ensure that the size of the main region is larger than the sub-regions. It should be noted that the partition of the degraded area is related to the laplacian of gaussian, and the size of the sub-area is proportional to the laplacian of gaussian, and in one example, each sub-area is a pixel matrix of N by N, where N is an integer greater than or equal to 5, for example, the sub-area is a pixel matrix of 5 by 5, the sub-area is a pixel matrix of 6 by 6, or the sub-area is a pixel matrix of 7 by 7. Different sub-regions may be located with a center pixel point, an upper left corner pixel point, or a lower right corner pixel.
Step S153, obtaining edge sub information of the input sub image data in the sub region, and obtaining a compensation sub gain of the sub region according to the amount of the edge sub information.
Similarly, after the degraded area is divided into a plurality of sub-areas, the input image data of the original degraded area is also divided into corresponding input sub-image data.
In step S155, one of the compensation sub-gains is selected as the compensation gain based on a preset rule.
Among them, the preset rule is selected according to the situation of the degraded area division, for example, there are the following:
the first method comprises the following steps: the preset rule is to select the maximum value of the compensation sub-gains as the compensation gain. And comparing the magnitude of each compensation sub-gain, and selecting the maximum compensation sub-gain as the compensation gain.
For example, the compensation sub-gain of the main region is 0.85, and the compensation sub-gain of the sub-region is 0.95. Since the edge information in the sub-region is less, reducing the compensation gain to a value of 0.85 to 0.85 will affect the normal display of the sub-region, and to meet the requirement for the compensation gain in the sub-region, the maximum value of the compensation sub-gain of the main region and the compensation sub-gain of the sub-region is selected as the compensation gain, that is, 0.95 is selected as the compensation gain.
And the second method comprises the following steps: when the sub-region includes a main region and a sub-region, the preset rule is as follows:
and acquiring a gain difference value of the compensation sub-gain corresponding to the sub-region and the compensation sub-gain corresponding to the main region.
And if the gain difference is smaller than or equal to the gain difference threshold, selecting the compensation sub-gain corresponding to the main area as the compensation gain. For example, the compensation sub-gain of the sub-region is 0.73, the compensation sub-gain of the sub-region is 0.41, and the gain difference threshold is 0.2, and since the difference between the compensation sub-gain of the sub-region and the compensation sub-gain of the sub-region is less than 0.2, 0.73 is selected as the compensation gain.
And if the gain difference is larger than the gain difference threshold, selecting the compensation sub-gain corresponding to the sub-area as the compensation gain. For example, the compensation sub-gain of the sub-region is 0.41, the compensation sub-gain of the sub-region is 0.73, and the gain difference threshold is 0.2, and since the difference between the compensation sub-gain of the sub-region and the compensation sub-gain of the sub-region is greater than 0.2, 0.73 is selected as the compensation gain.
It should be noted that the gain difference threshold may be set according to actual requirements, for example, the gain difference threshold is 0.1, 0.2, or 0.3.
And the third is that: when the sub-regions include one main region and at least two sub-regions, the preset rule is as follows:
and acquiring the gain difference value of the compensation sub-gain corresponding to the sub-area and the compensation sub-gain corresponding to each main area.
And if the gain difference values are smaller than or equal to the gain difference value threshold, selecting the compensation sub-gain corresponding to the main area as the compensation gain.
And if one gain difference value is larger than the gain difference value threshold value, selecting the compensation sub-gain corresponding to the gain difference value larger than the gain difference value threshold value as the compensation gain.
And if at least two gain difference values are larger than the gain difference value threshold value, selecting the compensation sub-gain corresponding to the maximum gain difference value as the compensation gain.
It should be noted that, the compensation sub-gains of each sub-region are respectively different from the compensation self-gains of the main region, each gain difference is respectively compared with a gain difference threshold, if only one of the gain differences is greater than the gain difference threshold, the gain difference greater than the gain difference threshold is selected, and the compensation sub-gain of the sub-region corresponding to the gain difference is calculated as the compensation gain. If two or more than two gain difference values are larger than the gain difference threshold value, selecting the maximum gain difference value from the gain difference values, and taking the compensation self-gain of the sub-area corresponding to the calculated gain difference value as the compensation gain.
In step S17, the compensated input image data in the degraded area is obtained based on the compensation data, the input image data, and the compensation gain.
In one example, a product value of the compensation data, the input image data, and the compensation gain is acquired as the compensated input image data within the degraded area.
In order to better compensate for the degraded area, in one example, the step of acquiring the amount of edge information of the input image data within the degraded area and acquiring the compensation gain of the degraded area according to the amount of edge information includes the steps of:
and performing smooth filtering processing on the compensation gain. In one example, the compensation gain is smoothed based on a gaussian smoothing operator. For example, the compensation gain is smoothed by using a gaussian smoothing operator of 3 by 3 (as shown in fig. 4) as a smoothing template, so that the difference between the region where the processed compensation gain is not 1 and the other regions is smoothed, and a smoother image is obtained. When the smoothing operator is used, the boundary of the compensation region is positioned, so that the smoothing operator can calculate in the region which needs smoothing most, the calculation amount is reduced, and the calculation efficiency is improved.
After smoothing filtering processing is performed on the compensation gain, compensated input image data in the degraded region is obtained based on the compensation data, the input image data, and the processed compensation gain.
The OLED panel display compensation method comprises the following steps: acquiring compensation data of each pixel; extracting a deteriorated region in the OLED panel based on the average image level difference value of each pixel; acquiring the edge information amount of the input image data in the degradation area, and acquiring the compensation gain of the degradation area according to the edge information amount; the method comprises the steps of obtaining compensated input image data in a degradation region according to compensation data, input image data and compensation gain, identifying the degradation region in the OLED panel, calculating the compensation gain used for weighting the compensation data based on the edge information amount of the image data to be input in the degradation region, properly reducing compensation in the degradation region, and reducing the aging speed of the degradation region.
It should be understood that although the various steps in the flowcharts of fig. 1 and 3 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 some of the steps in fig. 1 and 3 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is provided an OLED panel display compensation apparatus including:
and a data obtaining module 51, configured to obtain compensation data of each pixel.
An area acquisition module 53 for extracting a deteriorated area in the OLED panel based on the average image level difference value of each pixel; the average picture level difference is the difference between the reference average picture level and the actual average picture level; a plurality of adjacent pixels having an average image level difference greater than or equal to a level difference threshold are included in the degraded area.
And an information amount obtaining module 55 for obtaining an edge information amount of the input image data in the degraded area.
And a gain obtaining module 57, configured to obtain a compensation gain of the degraded area according to the amount of the edge information.
And a compensation module 59, configured to obtain compensated input image data in the degraded area according to the compensation data, the input image data, and the compensation gain.
For specific definition of the OLED panel display compensation device, reference may be made to the above definition of the OLED panel display compensation method, and details are not repeated here. The modules in the above OLED panel display compensation device can be implemented in whole or in part 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 one embodiment, a display device is provided, the internal structure of which may be as shown in fig. 6. The display device includes a processor, a memory, a display screen, and a database connected by a system bus. Wherein the processor of the display device is configured to provide computing and control capabilities. The memory of the display device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The database of the display device is used for storing data. The network interface of the display device is used for communicating with an external terminal through network connection. The computer program is executed by a processor to implement an OLED panel display compensation method. The display screen of the computer equipment is an OLED display screen.
Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, there is provided a display device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the following steps when executing the computer program:
the compensation data for each pixel is acquired.
Extracting a degradation region in the OLED panel based on the average image level difference of each pixel; the average picture level difference is the difference between the reference average picture level and the actual average picture level; a plurality of adjacent pixels having an average image level difference greater than or equal to a level difference threshold are included in the degraded area.
An amount of edge information of the input image data within the degraded area is acquired, and a compensation gain of the degraded area is acquired according to the amount of edge information.
The compensated input image data in the degraded area is obtained based on the compensation data, the input image data, and the compensation gain.
In one embodiment, the processor when executing the computer program further performs the steps of:
dividing the degraded area into at least two sub-areas; the sub-region comprises a main region and at least one sub-region; the primary region is larger than the secondary region.
And acquiring edge sub-information of input sub-image data in the sub-area, and acquiring compensation sub-gain of the sub-area according to the amount of the edge sub-information.
And selecting one of the compensation sub-gains as the compensation gain based on a preset rule.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
compensation data for each pixel is acquired.
Extracting a deteriorated region in the OLED panel based on the average image level difference value of each pixel; the average picture level difference is the difference between the reference average picture level and the actual average picture level; a plurality of adjacent pixels having an average image level difference greater than or equal to a level difference threshold are included in the degraded area.
An amount of edge information of the input image data within the degraded area is acquired, and a compensation gain of the degraded area is acquired according to the amount of edge information.
The compensated input image data in the degraded area is obtained based on the compensation data, the input image data, and the compensation gain.
In one embodiment, the computer program when executed by the processor further performs the steps of:
dividing the degraded area into at least two sub-areas; the sub-region comprises a main region and at least one sub-region; the primary region is larger than the secondary region.
And acquiring edge sub-information of input sub-image data in the sub-area, and acquiring compensation sub-gain of the sub-area according to the amount of the edge sub-information.
And selecting one of the compensation sub-gains as the compensation gain based on a preset rule.
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 may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
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 claims. 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 (13)
1. The OLED panel display compensation method is characterized by comprising the following steps of:
acquiring compensation data of each pixel;
extracting a deteriorated region in the OLED panel based on the average image level difference value of each of the pixels; the average picture level difference is a difference between a reference average picture level and an actual average picture level; a plurality of adjacent pixels in the degraded area, in which the average image level difference is greater than or equal to a level difference threshold value;
acquiring the edge information amount of the input image data in the degradation area, and acquiring the compensation gain of the degradation area according to the edge information amount;
and obtaining compensated input image data in the degradation region according to the compensation data, the input image data and the compensation gain.
2. The OLED panel display compensation method of claim 1, wherein the step of obtaining the amount of edge information of the input image data in the degraded area and obtaining the compensation gain of the degraded area according to the amount of edge information comprises the steps of:
dividing the degraded area into at least two sub-areas; the sub-region comprises a main region and at least one sub-region; the primary region is larger than the secondary region;
acquiring edge sub information of input sub-image data in the sub-area, and acquiring compensation sub-gain of the sub-area according to the edge sub information amount;
and selecting one of the compensation sub-gains as the compensation gain based on a preset rule.
3. The OLED panel display compensation method of claim 2, wherein the preset rule is as follows:
and selecting the maximum value of each compensation sub-gain as the compensation gain.
4. The OLED panel display compensation method of claim 2, wherein when the sub-region includes one of the main regions and one of the sub-regions, the preset rule is as follows:
obtaining a gain difference value of the compensation sub-gain corresponding to the sub-region and the compensation sub-gain corresponding to the main region;
if the gain difference is smaller than or equal to a gain difference threshold, selecting the compensation sub-gain corresponding to the main area as the compensation gain;
and if the gain difference is larger than the gain difference threshold, selecting the compensation sub-gain corresponding to the sub-area as the compensation gain.
5. The OLED panel display compensation method of claim 2, wherein when the sub-regions include one of the main regions and at least two of the sub-regions, the preset rule is as follows:
obtaining a gain difference value between the compensation sub-gain corresponding to the sub-region and the compensation sub-gain corresponding to each main region;
if the gain difference values are smaller than or equal to a gain difference value threshold, selecting the compensation sub-gain corresponding to the main area as the compensation gain;
if one gain difference value is larger than the gain difference value threshold value, selecting the compensation sub-gain corresponding to the gain difference value larger than the gain difference value threshold value as the compensation gain;
and if at least two gain difference values are larger than the gain difference value threshold value, selecting the compensation sub-gain corresponding to the largest gain difference value as the compensation gain.
6. The OLED panel display compensation method of any one of claims 2 to 5, wherein each sub-region is an N by N pixel matrix, wherein N is an integer greater than or equal to 5.
7. The OLED panel display compensation method of any one of claims 1 to 5, wherein the step of obtaining the amount of edge information of the input image data within the degraded area and obtaining the compensation gain of the degraded area according to the amount of edge information is followed by the step of:
carrying out smooth filtering processing on the compensation gain;
in the step of obtaining compensated input image data in the degraded area based on the compensation data, the input image data, and the compensation gain:
and obtaining compensated input image data in the degradation region according to the compensation data, the input image data and the processed compensation gain.
8. The OLED panel display compensation method of claim 7, wherein the step of smoothing the compensation gain comprises:
and carrying out smooth filtering processing on the compensation gain based on a Gaussian smoothing operator.
9. The OLED panel display compensation method of any one of claims 1 to 5, wherein the step of obtaining compensated input image data within the degraded area based on the compensation data, the input image data, and the compensation gain comprises:
acquiring a product value of the compensation data, the input image data and the compensation gain;
and using the product value as the compensated input image data in the degradation area.
10. The OLED panel display compensation method of any one of claims 1 to 5, wherein the step of obtaining the amount of edge information of the input image data within the degraded area comprises:
acquiring the amount of edge information of the input image data within the degraded area based on a laplacian of gaussian operator.
11. An OLED panel display compensation device, comprising:
the data acquisition module is used for acquiring compensation data of each pixel;
an area acquisition module for extracting a deteriorated area in the OLED panel based on the average image level difference value of each of the pixels; the average picture level difference is a difference between a reference average picture level and an actual average picture level; a plurality of adjacent pixels in the degraded area, in which the average image level difference is greater than or equal to a level difference threshold value;
an information amount acquisition module for acquiring an edge information amount of the input image data in the degraded area;
a gain obtaining module, configured to obtain a compensation gain of the degraded area according to the amount of the edge information;
and the compensation module is used for obtaining compensated input image data in the degradation region according to the compensation data, the input image data and the compensation gain.
12. A display device comprising a memory storing a computer program and a processor implementing the steps of the OLED panel display compensation method of any one of claims 1 to 10 when the computer program is executed by the processor.
13. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, realizes the steps of the OLED panel display compensation method according to any one of claims 1 to 10.
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