CN111785220A - Display correction method and system - Google Patents
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- 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
- G09G3/20—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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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Abstract
A display correction method and system, the method includes: analyzing the display through a color analyzer and generating original display data; adjusting the resolution of the display, and repeatedly performing an inner difference method and an outer difference method according to the original display data under the first resolution and the second resolution to obtain an inner difference value and a heterodyne value which accord with a first range and a second range, wherein the first resolution is smaller than the second resolution; calculating the inner difference value and the heterodyne value through linear difference compensation to obtain an inner difference value and an outer difference value, and obtaining a difference value between the inner difference value and the outer difference value and original display data; comparing the difference value with a threshold value to obtain a comparison result; and according to the comparison result, the color parameters of the display are adjusted in a progressive mode in a partitioning mode. The display correction method can correct the colors of all display areas in the display to different degrees, and compared with the prior method which can only uniformly correct the display to the same degree, the correction method can obtain more accurate color correction.
Description
Technical Field
The present invention relates to a method and a system for calibrating a display, and more particularly, to a method and a system for calibrating a display for different liquid crystal display modules.
Background
In the market, Liquid Crystal display modules (LCM) manufactured by different manufacturers are different, different Liquid Crystal display modules have different display effects, and the Liquid Crystal display panels themselves have some characteristic differences. Therefore, generally, display correction of the display is performed before the display is shipped.
The conventional display calibration method is to perform accurate and high-resolution two-dimensional measurement on the luminance distribution and the chrominance distribution of the display through a color analyzer, and perform uniform (uniform) calibration according to the measurement result. However, for the liquid crystal display module with poor characteristics, the conventional display unified calibration method cannot obtain a good calibration result, and even some displays are completely calibrated in a unified manner, the uniformity and the chroma of the liquid crystal display module are worse, and the display effect required by a client cannot be achieved completely.
Therefore, there is a need to provide a calibration method for different lcd modules, which can calibrate different displays according to the lcd modules with different characteristics.
Disclosure of Invention
The present invention is directed to a method and a system for calibrating a display, which can calibrate different displays according to liquid crystal display modules with different characteristics.
According to the above object, the present invention provides a display calibration method, comprising: analyzing the display through a color analyzer and generating original display data; adjusting the resolution of the display, and repeatedly performing an inner difference method and an outer difference method according to the original display data under the first resolution and the second resolution to obtain an inner difference value and a heterodyne value which accord with a first range and a second range, wherein the first resolution is smaller than the second resolution; obtaining an internal difference value and an external difference value through linear difference compensation calculation, and obtaining a difference value between the internal difference value and the external difference value and original display data; comparing the difference value with a threshold value to obtain a comparison result; and according to the comparison result, the color parameters of the display are adjusted in a progressive mode in a partitioning mode.
Furthermore, in the step of adjusting the resolution of the display and obtaining the inner difference value and the outer difference value, the display is divided into a plurality of first display areas at the first resolution, and the inner difference value is calculated by an inner difference method according to the original display data and the plurality of first display areas.
Furthermore, after the display is divided into a plurality of first display areas, each first display area has first original display data, a display average value is calculated according to the center point of each first display area and the surrounding first original display data, an internal difference value of the display is calculated according to the display average value and the original display data, the original display data is updated according to the internal difference value, and then the internal difference value of each first display area is repeatedly calculated according to the updated original display data until the internal difference value is within a first range.
Further, in the step of adjusting the resolution of the display, the display is further adjusted to a second resolution, the display is divided into a plurality of second display areas, and the external difference value is calculated by an external difference method according to the second display areas.
Furthermore, the second display area located at the center point is set as a reference display area, the original display data of the reference display area and the original display data of the surrounding second display areas are calculated by an heterodyne method to obtain an heterodyne value, the original display data of the second display areas are updated according to the heterodyne value, and then the heterodyne value of each second display area is repeatedly calculated according to the updated original display data and the original display data of the reference display areas until the heterodyne value is within a second range.
Furthermore, in the step of obtaining the inner and outer difference values, a linear difference compensation calculation is performed according to the inner difference value and the heterodyne value to obtain the inner and outer difference values of each second display area.
Further, in the step of comparing the difference value with the threshold value to obtain the comparison result, the difference value of each second display region is compared with the threshold value to confirm whether the difference value between the inside and outside difference values of the second display region and the original display data is within the threshold value.
Furthermore, the progressive mode is to divide the display into a plurality of areas and adjust the color parameters of the display according to the distance between the areas and the central point.
According to the aforementioned objective, the present invention provides a display calibration system, which comprises a display, a color analyzer, a resolution adjustment module, a calculation module, a comparison module and a calibration module. The resolution adjustment module is connected with the color analyzer and is used for adjusting the resolution of the display image and dividing the display image into a multi-dimensional matrix. The calculation module is connected with the resolution adjustment module and performs inner difference calculation or heterodyne calculation according to different resolutions so as to obtain an inner difference value and an outer difference value of the displayed image; the comparison module is connected with the calculation module, the comparison module compares the difference value calculated by the calculation module with the threshold value and then outputs a comparison result, and the correction module is connected with the comparison module, receives the comparison result output by the comparison module and performs display correction of the display in a progressive mode according to the comparison result.
Furthermore, the resolution adjustment module, the calculation module, the comparison module and the correction module are installed in a computer system.
The invention has the advantages that the correction of different degrees can be carried out aiming at the colors of all the display areas in the display, and compared with the prior method which can only carry out the correction of the same degree on the display in a unified way, the correction method can obtain more accurate color correction.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
FIG. 1 is a flowchart illustrating a display calibration method according to an embodiment of the invention.
Fig. 2A-2D are schematic diagrams of display areas of a display.
FIG. 3 is a block diagram of a display calibration system according to an embodiment of the invention.
Detailed Description
The following description is provided for the embodiments of the display calibration method and system according to the present disclosure, and those skilled in the art will understand the advantages and effects of the present disclosure from the disclosure of the present disclosure. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.
For clarity of explanation, in some cases the present techniques may be presented as including individual functional blocks comprising functional blocks, including steps or routes in a method implemented in a device, device component, software, or a combination of hardware and software.
An apparatus implementing methods in accordance with these disclosures may include hardware, firmware, and/or software, and may take any of a variety of forms. Typical examples of such features include laptops, smart phones, small personal computers, personal digital assistants, and the like. The functionality described herein may also be implemented in a peripheral device or in an embedded card. By way of further example, such functionality may also be implemented on different chips or on different boards executing different programs on a single device.
The instructions, medium for transmitting such instructions, computing resources for executing the same, or other structure for supporting such computing resources are means for providing the functionality described in these publications.
Embodiments of the display correction method of the invention
FIG. 1 is a flowchart illustrating a display calibration method, as shown in FIG. 1, the display calibration method of the present invention includes the following steps. In step S101, a display is analyzed by a color analyzer and raw display data is generated. Generally, the color analyzer may be a color analyzer model CA2500, but in different embodiments, different color analyzers may be used, and are not limited herein. In the invention, the color expression of the display to be tested is firstly analyzed to obtain the original display data of the display, and then the calculation of the inner heterodyne is carried out according to the original display data.
In step S102, the resolution of the display is adjusted, and an inner difference method and an outer difference method are performed according to the original display data under the first resolution and the second resolution respectively to obtain an inner difference value and an outer difference value that conform to the first range and the second range. After the color analyzer analyzes the display, the original display data of the color and brightness distribution of the display can be obtained. Next, the resolution of the display is adjusted, and linear difference compensation calculation is performed at the first resolution and the second resolution to obtain an inner difference value and an outer difference value corresponding to the first range and the second range, as shown in fig. 2A-2C. For example, assuming that the original resolution of the display is 60X33, the resolution of the display 20 is adjusted to 5X5, the resolution of 5X5 is referred to as the first resolution 21, and the display is divided into 5X5 — 25 first display regions, however, in different embodiments, the display may be divided into 3X 3, 7X 7, 9X 9, … or n m first display regions, which is not limited herein.
Then, an interpolation value is calculated according to the original display data and the plurality of first display areas by an interpolation method. Further, the display calibration method of the present invention divides the display into a plurality of first display areas, each of the first display areas has a first original display data, and calculates the display average value according to the center point of each of the first display areas and the surrounding first original display data. In order to avoid overlarge color and brightness deviation of each first display area, the display average value of each first display area is obtained, and the internal difference value of the display is calculated according to the display average value and original display data. And updating the original display data according to the internal difference value, and repeatedly calculating the internal difference value of each first display area according to the updated original display data until the internal difference value is within the first range. And calculating the internal difference value of each first display area according to the first original display data and the display average of each first display area by an internal difference method.
Next, the resolution of the display, referred to herein as the second resolution 22, is restored, as shown in FIG. 2C, and the display is divided into a plurality of second display regions. For example, after the inner difference value calculation is completed, the resolution of the display is reduced from 5X5 to 60X33, the display is divided into a plurality of second display areas, and the outer difference value calculation is performed by an outer difference method according to the second display areas. And setting the second display area positioned at the central point as a reference display area, and calculating the original display data of the reference display area and the original display data of a plurality of second display areas around by an outer difference method to obtain an outer difference value. And updating the original display data of the plurality of second display areas according to the external difference value, and repeatedly calculating the heterodyne value of each second display area according to the updated original display data and the original display data of the reference display area until the external difference value is within a second range. In addition, the first resolution is less than the second resolution.
In step S103, the inner and outer differences are calculated by linear difference compensation to obtain inner and outer differences, and the difference between the inner and outer differences and the original display data is calculated. The inner difference value and the heterodyne value obtained by calculation in step S102 are further subjected to linear difference compensation calculation to obtain an inner and outer difference value. In detail, linear difference compensation calculation is performed according to the internal difference value and the heterodyne value to obtain an internal and external difference value of each second display area, and difference calculation is performed on the original display data of each second display area and the internal and external difference values. The difference between the inner and outer difference values of the second display area and the original display data is calculated.
In step S104, the difference value is compared with a threshold value to obtain a comparison result. The difference value of the second display area calculated in step S103 is compared with a threshold value to obtain a comparison result. And comparing the difference value of the second display area with a threshold value, and determining whether the difference value between the inner difference value and the outer difference value of the second display area and the original display data is within the threshold value.
In step S105, the color parameters of the display are adjusted in a progressive manner according to the comparison result. If the comparison result is within the display specification (specification) range of the display and indicates that the modified result is close to the display specification of the display, the display compensation correction of the display is performed by the inner heterodyne value in a progressive manner. If the comparison result is not within the display specification range of the display, the calculation result is not expected, and the calculation result needs to be redone once until the comparison result is within the display specification range of the display, so that the display correction effect of the display is achieved.
In addition, as shown in fig. 2D, for example, the display area of the display is divided into three areas, the first area 23 is an inner area occupying 32% of the display area of the display, and the first area 23 is an area closest to the reference display area located at the center point, where the color distortion or color difference is obvious and a large color compensation is required. The second region 24 is a region slightly distant from the reference display region, accounting for approximately 48% (32% -80%) of the total area of the display where the color distortion exhibited is less pronounced, requiring only moderate color compensation. The third region 25 is a region farthest from the reference display region, belongs to the outer region of the display, and occupies about 20% (80% -100%) of all regions of the display, and because the region belongs to the peripheral region of the display region, the color difference is less visible, and only a little color compensation is needed.
The display correction method can correct the colors of all the display areas to different degrees, and can obtain more accurate color correction compared with the prior method which can only uniformly correct the display to the same degree.
Embodiments of the display correction System of the invention
FIG. 3 is a diagram of a display calibration system according to the present invention. As shown in fig. 3, the display calibration system 30 of the present invention includes a display 31, a color analyzer 32, a resolution adjustment module 33, a calculation module 34, a comparison module 35, and a calibration module 36.
The display 31 is a liquid crystal display that needs to be calibrated, and the color analyzer 32 may be a color analyzer model CA2500, but in different embodiments, different color analyzers may be used, and are not limited herein. The color analyzer 32 is used for acquiring the display image of the display 31, knowing the display status of the display 31 according to the measured display image of the display 31, and further determining whether the display 31 needs to be corrected. The resolution adjustment module 33 is connected to the color analyzer 32, and can adjust the resolution of the displayed image analyzed by the color analyzer 32 and divide the image displayed by the display 31 into a multi-dimensional matrix. The display calibration system 30 of the present invention performs the calculation of the inside-outside difference method according to the different display image resolutions, and further performs the calibration of the display 31.
The calculation module 34 is connected to the resolution adjustment module 33, and the calculation module 34 performs inner difference calculation or heterodyne calculation according to different resolutions to obtain an inner difference value and an outer difference value of a display image of the display 31. Then, the calculation module 34 calculates the inner and outer difference values according to the inner and outer difference values. The calculation module 34 may further calculate the difference between the internal and external difference values and the original display data, in addition to the internal and external difference values. The comparing module 35 is connected to the calculating module 34, and the comparing module 35 compares the difference calculated by the calculating module with a threshold value and then outputs a comparison result. The correction module 36 is connected to the comparison module 35, and receives the comparison result output by the comparison module, and performs display correction of the display in a progressive manner according to the received comparison result. In addition, it should be noted that the resolution adjustment module 33, the calculation module 34, the comparison module 35 and the correction module 36 in the display correction system 30 are installed in a computer system, which may be a desktop computer, a notebook computer or a tablet computer, but is not limited thereto.
The so-called progressive manner, for example, divides the display area of the display 31 into three areas, the first area is an inner area accounting for 32% of the total display area of the display 31, and the first area is an area closest to the reference display area located at the center point, where the color distortion or color difference is obvious, and a large color compensation is required. The second region is a region slightly distant from the reference display region, accounting for approximately 48% (32% -80%) of the total area of the display 31 where the color distortion exhibited is less noticeable, requiring only moderate color compensation. The third region is the region farthest from the reference display region, and belongs to the outer region of the display 31, which occupies about 20% (80% -100%) of all the regions of the display 31, and because the color difference is less visible in the peripheral region of the display 31, only a little color compensation is needed.
The invention has the advantages that the correction of different degrees can be carried out aiming at the colors of all the display areas in the display, and compared with the prior method which can only carry out the correction of the same degree on the display in a unified way, the correction method can obtain more accurate color correction.
The disclosure is only a preferred embodiment of the invention and should not be taken as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. A method for calibrating a display, comprising:
analyzing a display through a color analyzer and generating original display data;
adjusting the resolution of the display, and repeatedly performing an inner difference method and an outer difference method according to the original display data under a first resolution and a second resolution respectively to obtain an inner difference value and a heterodyne value which accord with a first range and a second range, wherein the first resolution is smaller than the second resolution;
obtaining an inner difference value and an outer difference value through linear difference compensation calculation, and obtaining a difference value between the inner difference value and the outer difference value and the original display data;
comparing the difference value with a threshold value to obtain a comparison result; and
and according to the comparison result, the color parameters of the display are adjusted in a progressive mode in a partitioning mode.
2. The method of claim 1, wherein the step of adjusting the resolution of the display and obtaining the inner difference value and the outer difference value comprises dividing the display into a plurality of first display regions at the first resolution, and calculating the inner difference value according to the inner difference method based on the original display data and the plurality of first display regions.
3. The method of claim 2, wherein the display is divided into the plurality of first display regions, each of the plurality of first display regions has a first original display data, a display average value is calculated according to a center point of each of the plurality of first display regions and the surrounding first original display data, the inner difference value of the display is calculated according to the display average value and the original display data, the original display data is updated according to the inner difference value, and the inner difference value of each of the plurality of first display regions is repeatedly calculated according to the updated original display data until the inner difference value is within the first range.
4. The method according to claim 1, wherein in the step of adjusting the resolution of the display, the display is further divided into a plurality of second display regions when the display is at the second resolution, and the disparity value is calculated by the disparity method based on the plurality of second display regions.
5. The method of claim 4, wherein one of the plurality of second display regions located at a center point is set as a reference display region, the original display data of the reference display region and the original display data of the plurality of second display regions surrounding the reference display region are calculated by a disparity method to obtain a disparity value, the original display data of the plurality of second display regions are updated according to the disparity value, and the disparity value of each of the plurality of second display regions is repeatedly calculated according to the updated original display data and the original display data of the reference display region until the disparity value is within the second range.
6. The method according to claim 5, wherein in the step of obtaining the inside-outside difference value, the inside-outside difference value of each of the plurality of second display regions is obtained by performing the linear difference compensation calculation according to the inside difference value and the outside difference value.
7. The method of claim 6, wherein in the step of comparing the difference value with the threshold value to obtain the comparison result, the difference value of each of the plurality of second display regions is compared with the threshold value to determine whether the difference value between the inner and outer difference values of the plurality of second display regions and the original display data is within the threshold value.
8. The method according to claim 1, wherein the progressive manner is to divide the display into a plurality of regions, and adjust the color parameters of the display according to the distance between the plurality of regions and a central point.
9. A display correction system, comprising:
a display;
a color analyzer for obtaining the display image of the display;
the resolution adjusting module is connected with the color analyzer and used for adjusting the resolution of the display image and dividing the display image into a multi-dimensional matrix;
the calculation module is connected with the resolution adjustment module and is used for performing inner difference calculation or heterodyne calculation according to different resolutions so as to obtain an inner difference value and an outer difference value of the display image;
the comparison module is connected with the calculation module and compares the difference value calculated by the calculation module with a threshold value and then outputs a comparison result; and
and the correction module is connected with the comparison module, receives the comparison result output by the comparison module, and performs display correction on the display in a progressive mode in a partitioning mode according to the comparison result.
10. The display correction system of claim 9, wherein the resolution adjustment module, the calculation module, the comparison module and the correction module are installed in a computer system.
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| CN201910266132.1A CN111785220B (en) | 2019-04-03 | 2019-04-03 | Display correction method and system |
| TW108140321A TWI701649B (en) | 2019-04-03 | 2019-11-06 | Display correction method and system thereof |
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