CN110047415A - Method of color gamut mapping of color, electronic equipment and storage medium - Google Patents
Method of color gamut mapping of color, electronic equipment and storage medium Download PDFInfo
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- CN110047415A CN110047415A CN201910269555.9A CN201910269555A CN110047415A CN 110047415 A CN110047415 A CN 110047415A CN 201910269555 A CN201910269555 A CN 201910269555A CN 110047415 A CN110047415 A CN 110047415A
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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
- 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
- G09G3/2003—Display of colours
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0235—Field-sequential colour display
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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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
- G09G2340/00—Aspects of display data processing
- G09G2340/06—Colour space transformation
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Abstract
This announcement provides a kind of method of color gamut mapping of color, electronic equipment and storage medium, it include: the digit value for obtaining original color point, and Lab value is finally obtained according to digit value, the hue plane boundary profile of color dot is determined then according to Lab value, and judge the region where color dot, if color dot is outside target area, calculate the boundary slope and adjustment parameter value of boundary profile, new color point coordinates position is calculated with this, then Lab value is obtained according to the position of new color dot, finally the corresponding RGB digit value of new color dot is found out using calculating, and the digit value in output slab colour gamut, the mapping method of this announcement solves the color dot outside target color gamut, and panel colour gamut and target color gamut intersect in the case of color dot mapping inaccuracy problem, realize color difference, optimization mapping between chroma and brightness.
Description
Technical field
This announcement is related to technical field of image processing more particularly to a kind of method of color gamut mapping of color, electronic equipment and storage are situated between
Matter.
Background technique
With the continuous development of display technology and multi-media display device, show picture gradually present it is diversified become
Gesture.Different display equipment has different color ways of presentation, however, the respectively Color Gamut Mapping and matching problem between display equipment
Also protrusion increasingly.
In the prior art, common image processing techniques is Gamut Mapping algorithm, for target color gamut (Target)
It is handled with panel colour gamut (CSOT).By this algorithm, the color whole outside target color gamut region is cut to target
On the boundary of colour gamut, by the output of the direct original sample of color in colour gamut.Specifically, gamut regions foundation most descends color when calculating
Poor principle maps on gamut boundary, and colour gamut exterior point is mapped in gamut boundary along towards toward the direction mapping put on luminance axis
On.But in this algorithm, when the area of target color gamut all includes the content of panel colour gamut, mapping effect is preferable, works as mesh
The area of mark colour gamut does not completely include between the area or target color gamut and panel colour gamut of panel colour gamut that there are intersection regions
When, mapping will go wrong, while practical gamut boundary profile, there are a variety of situations, this species diversity directly results in mapping
The poor situation of uniformity.
In conclusion in existing image processing techniques, when operational objective algorithm, practical gamut boundary profile exists more
Kind situation, meanwhile, when being mapped colour gamut exterior point towards colour gamut inner region, the uniformity of mapping is poor, cannot be to various colors
Domain situation is handled, and therefore, it is necessary to design a kind of Color Gamut Mapping all for various colour gamut situations with general applicability
Algorithm.
Summary of the invention
This announcement provides a kind of method of color gamut mapping of color, electronic equipment and storage medium, right in state of the art to solve
When image procossing, there are a variety of situations for practical gamut boundary profile, meanwhile, colour gamut exterior point is being mapped towards colour gamut inner region
When, the uniformity of mapping is poor, the problems such as cannot handling various colour gamut situations.
In order to solve the above technical problems, the technical solution that this announcement embodiment provides is as follows:
According to this announcement embodiment in a first aspect, provide a kind of method of color gamut mapping of color, include the following steps:
S100: panel colour gamut and target color gamut are determined in same color gamut space, is inputted original in the target color gamut
The digit value of color dot P,
S101: obtaining color space (Lab) value of the color dot P, by the color space value obtain hue angle (H),
Chroma coordinates (C), lightness dimension (L) value, and determine the planar boundary profile and the color dot P of the place color dot P colour gamut
Coordinate position (the C of the chroma coordinates and the lightness dimension in the corresponding colour gamut planep, Lp)；
S102: judge that the color dot P is located in the panel colour gamut the still panel colour gamut according to the coordinate position
Outside；
S103: if the color dot P is located in the panel colour gamut, obtain the color dot P's according to the step S101
Lab value, and the digit value in the panel colour gamut of conversion map Cheng Xin；
S104: if the color dot P is located at outside the panel colour gamut, the Lab value and coordinate of the color dot P are redefined
Position, i.e., new color dot P ', and judge gamut regions locating for the new color dot P '；
S105: according in the step S104 the Lab value and the coordinate value, conversion map is at the new panel
Digit value in colour gamut.
Further include following steps in the step S100 according to one embodiment of this announcement:
S200: the digit value of the RGB of the target is obtained by target operation；
S201: the digit value in the step S200 is converted to RGB optical value by algorithm；
S202: the optical value in the step S201 is converted to XYZ tristimulus values；
S203: the XYZ tristimulus values in the step S202 is converted to the Lab value in the space Lab.
According to one embodiment of this announcement, in the step S201 also, the algorithm is numerical digit function algorithm and Gamma function
Algorithm.
According to one embodiment of this announcement, the step S104 further includes following steps:
S300: the boundary slope of the planar boundary profile is determined；
S301: the coordinate position of the color dot P ' is determined by adjustment parameter α；
S302: a fixed point P in C reference axis is determinedccCoordinate position；
S303: judging color dot P gamut regions locating in coloration map,
If the color dot P is located at high-brightness region, it is mapped to by minimum chromatism method on the boundary of the panel colour gamut；
If the color dot P is located at high zone of saturation, the panel colour gamut is mapped to towards the coordinate position of the color dot
Boundary on；
If the color dot P is located at low brightness area, it is mapped to far from the fixed point on the boundary of the panel colour gamut.
According to one embodiment of this announcement, the step S301 further includes following steps:
S400: the slope k of planar boundary profile in the panel colour gamut and the target color gamut1、k2、k3、k4It is big
It is small；
S401: if k1< k2, then the adjustment parameter
If k1> k2, then the adjustment parameter
According to one embodiment of this announcement, in the step S301, coordinate C=(1- α) * of the C reference axis of the color dot P '
Cp, the color dot P L coordinate axis coordinate L=Lp。
According to one embodiment of this announcement, in the step 302, the P of the fixationccCoordinate position be (500,0).
Further include following steps in the step S105 according to one embodiment of this announcement:
S500: the Lab value of the color dot P ' is obtained；
S501: the Lab value in the step S500 is converted into XYZ tristimulus values；
S502: the tristimulus values is converted into rgb light value；
S503: the rgb light value is converted into RGB digit value.
According to one embodiment of this announcement, in the step S103, the color dot P is identical as the color dot P ' value.
According to the second aspect of this announcement embodiment, this announcement embodiment also provides a kind of electronic equipment, and the electronics is set
Standby includes processor, and the processor realizes movement for executing instruction, and the execution method executed instruction includes originally taking off
Show the method for color gamut mapping of color that embodiment provides.
The third aspect of this announcement embodiment also provides a kind of storage medium, and the storage medium has store instruction, described
Instructing the method being performed includes the method for color gamut mapping of color provided in this announcement embodiment.
In conclusion this announcement embodiment has the beneficial effect that
It being different from the prior art, this announcement obtains the Lab value of original color point by the original color point in panel colour gamut, and
The plane coordinates position in the corresponding gamut regions of the color dot is determined according to Lab value, according to the judgement of the position of coordinate
Whether color dot is located at outside the mapping objects region, if the color dot is located at outside the panel colour gamut, just passes through new calculating
Formula and theory carry out alpha value calculated, and new mapping color point coordinates are determined by α, and final transposition is required color dot grayscale
Value, so that improved gamut mapping algorithm is suitable for the situation of any colour gamut.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of announcement
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 cuts target color gamut boundary schematic diagram for the color outside colour gamut in the prior art；
Fig. 2 is the flow chart of new method of color gamut mapping of color in this announcement embodiment；
Fig. 3 is the mapping schematic diagram of any color dot chroma value in this announcement embodiment；
Fig. 4 is that new mappings point coordinate schematic diagram is obtained in this announcement embodiment；
Fig. 5 is a kind of schematic diagram for obtaining new mapping point coordinate in this announcement embodiment；
Fig. 6 is the electronic equipment schematic diagram that this announcement embodiment provides.
Specific embodiment
Below in conjunction with the attached drawing in this announcement embodiment, the technical solution in this announcement embodiment is carried out clear, complete
Site preparation description.Obviously, described embodiment is only this announcement a part of the embodiment, instead of all the embodiments.It is based on
Embodiment in this announcement, those skilled in the art's every other implementation obtained without creative efforts
Example belongs to the range of this announcement protection.
In the description of this announcement, it is to be understood that the orientation or positional relationship of instruction is side based on the figure
Position or positional relationship are merely for convenience of describing this announcement and simplify description.In addition, term " first ", " second " are only used for retouching
Purpose is stated, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.This
The example of various specific techniques and material that announcement provides, but those of ordinary skill in the art may be aware that other works
The application of skill and/or the use of other materials.
As shown in FIG. 1, FIG. 1 is the colors outside colour gamut in the prior art to cut target color gamut boundary schematic diagram.Color in Fig. 1
Domain boundary is ideal model, and the range of panel colour gamut is completely within the scope of target color gamut, in this way, by algorithm, outside colour gamut
Color dot along towards the direction of the point on luminance axis map when, the color outside colour gamut completely can be cut to panel color
On the boundary of domain, and the color in colour gamut is directly exported as former state.Color in colour gamut remains to accurately present after output.
But in the actual process, often the gamut range of panel colour gamut can not completely fall in the model of target color gamut
In enclosing.Therefore, in response to this, this announcement proposes a kind of new method of color gamut mapping of color.As shown in Fig. 2, Fig. 2 is this announcement
The flow diagram of new method of color gamut mapping of color in embodiment.Wherein, steps are as follows for detailed process:
Step S100: panel colour gamut and target color gamut are determined in same color gamut space, is inputted in the target color gamut
The digit value of original color point P；
In the present embodiment, panel colour gamut and target color gamut include computer graphical color gamut space, GIE color gamut space and screen
Curtain system gamut space, such as the panel colour gamut are sRGB colour gamut, which is color space (Lab) colour gamut, this
A little colour gamuts indicate the range areas that number of colors is constituted, i.e., the color gamut that various screen display devices can show, at it
It is also possible to various other different colors in its embodiment mutually to map, it is not limited here.
Specifically, can not be identified by algorithmic function since the color dot value in original color gamut is all grayscale value, therefore, first
Need to convert the color dot value in original color gamut, in order to determine specific location of the color dot in colour gamut, need color dot and
The coordinate position of panel colour gamut and target color gamut is normalized: firstly, being obtained by objective function Target (RGB)
The RGB digit value of required color dot is taken, then optical value is converted by algorithm by the digit value, using matrix conversion, by RGB
Optical value is converted into tristimulus values, and tristimulus values is further converted to Lab value again, and obtains color dot in original color gamut
Lab value, the boundary contour of hue plane where finally determining the color dot by the Lab value again.Specifically, the step
Include the following steps: in rapid S100
S200: the digit value of the RGB of the target is obtained by objective function operation；
S201: the digit value in the step S200 is converted to RGB optical value by algorithm；
S202: the optical value in the step S201 is converted to XYZ tristimulus values；
S203: the XYZ tristimulus values in the step S202 is converted to the Lab value in the space Lab.
Step S101: obtaining color space (Lab) value of the color dot P, obtains H, C, L value by the Lab value, and
The planar boundary profile and the coordinate position in the corresponding colour gamut plane of the color dot P of colour gamut where determining the color dot
(Cp, Lp)。
For the transformational relation illustrated between various parameters being more clear, when specifically being converted, this announcement with
In colour gamut for the mapping of the chroma value of any color dot, as shown in Fig. 3.Fig. 3 is any color dot chroma value in this announcement embodiment
Mapping schematic diagram.In the coordinate system, horizontal axis is chroma, and the longitudinal axis is brightness, using color dot Lab value any in original color gamut,
That is brightness value L, red green coloured silk value a and blue yellow color-values b, in the colour gamut section, any point P (C, L) and luminance axis are put down
Three-dimensional color gamut space can be converted to two-dimensional plane by face, and determine by the value of a, b current P point hue angle H, bright
Coordinate L and chroma coordinates C is spent, formula specific as follows:
L=L* (3)
Preferably, in step s 201, the algorithm is that digital (RGB) function algorithm and Gamma2.2 function are calculated
Method.
Under normal circumstances, various conversions are not being not that a step can convert, and RGB digit value is firstly the need of being converted into
XYZ tristimulus values could be converted into Lab value, specifically, XYZ tristimulus conversion formula are as follows:
A=500 [f (X/X_n)-f (Y/Y_n)]
Simultaneously, it is assumed that R, G, B are three channels of pixel, and wherein the conversion formula between function gamma2.2 function is as follows:
By the conversion of above-mentioned correlation formula and function, any color dot in original color gamut can be converted into being known by function
Other Lab value, and determine the planar boundary profile of its specific place tone.
Step S102: judge that the color dot P is located in the panel colour gamut the still panel according to the coordinate position
Outside colour gamut.
The step S102 is primarily used to judge whether color dot P is located in panel colour gamut.
Step S103: if the color dot P is located in the panel colour gamut, the color dot is obtained according to the step S101
The Lab value of P, and the digit value in the panel colour gamut of conversion map Cheng Xin.
When color dot P (C, L) is located in the panel colour gamut, i.e., in plane coordinates relationship as shown in Figure 1, directly according to
Mapping method in the prior art is mapped, i.e., the Lab value of the color dot P is obtained according to the step S101, and convert
The digit value being mapped in the new panel colour gamut.
When color dot P (C, L) is not in panel colour gamut, i.e. P point except panel colour gamut, at this point,
Step S104: if the color dot P is located at outside the panel colour gamut, redefine the color dot P Lab value and
Coordinate position, i.e., new color dot P ', and judge gamut regions locating for the color dot P '.
Specifically, further including following steps when being mapped the point outside panel colour gamut:
S300: the boundary slope of the planar boundary profile is determined；
S301: the coordinate position of the color dot P ' is determined by adjustment parameter α；
S302: a fixed point P in C reference axis is determinedccCoordinate position；
S303: judging color dot P gamut regions locating in coloration map,
If being located at high-brightness region, it is mapped to by minimum chromatism method on the boundary of the panel colour gamut；
If being located at high zone of saturation, it is mapped to towards the coordinate position of the color dot on the boundary of the panel colour gamut；
If being located at low brightness area, it is mapped to far from the fixed point on the boundary of the panel colour gamut.
In mapping, it is necessary first to the boundary slope of the planar boundary profile mapped needed for determining, panel colour gamut and target
Colour gamut is surrounded by two straight lines, and the slope of this four straight lines is respectively set as k1、k2、k3And k4, k1With k2For boundary wheel
The slope of wide upper half line segment, k3With k4For the slope of boundary profile lower half line segment, k1With k3For two boundaries in panel colour gamut
The slope of line, k2With k4For the slope of two boundary lines in target color gamut.
Specifically, as shown in figure 4, Fig. 4 is the schematic diagram for obtaining new mappings in this announcement embodiment.At this point, due to color dot P
Not in target color gamut, it is therefore desirable to calculate an adjustment parameter α first, and then in the tool for finding out P ' by adjustment parameter α
Body coordinate position is mapped finally by P '.
Preferably, work as k1< k2When,
Adjustment parameter
Work as k1> k2When,
Adjustment parameter
After finding out specific adjustment parameter α, then determine by α the coordinate position of P ', i.e. CP’=(1- α) * CP, LP’=
LP, i.e. the coordinate points of P ' are ((1- α) * CP, LP)。
Wherein, adjustment parameter α is between 0~1.
In addition, need to also determine a fixed color dot P on coordinate C axis in mappingcc, the PccCoordinate position be
(500,0).
In mapping, as shown in Figure 4, P point is located at outside target color gamut, crosses P point along L coordinate axis and does vertical line, while root
According to coordinate points ((1- α) * C of the above-mentioned P ' being calculatedP, LP), P ' is on done vertical line, and by P ' and fixes color dot
PccConnection.Due to k at this time1< k2, and k3< k4, the color dot in the upper bound of target color gamut maps to panel colour gamut
Upper bound on, while P ' point for mapping best color dot.
Work as k1< k2, and k3> k4When, as shown in figure 5, Fig. 5 obtains new mapping point to be a kind of in this announcement embodiment
The schematic diagram of coordinate.
At this point, color dot P is also except target color gamut, also according to above-mentioned k when specific mapping3< k4When mapping relations come into
Row calculates.Details are not described herein.
Specifically, when Fig. 4 and Fig. 5 are mapped, in combination with positional relationship of the color dot P in coloration map, if P point
Positioned at the high zone of saturation of coloration map, then it is mapped to towards the coordinate position of the color dot on the boundary of the panel colour gamut,
Mapped according to mapping arrow direction in Fig. 4；If P point is located at the low brightness area of chromatic diagram spectrum, far from the fixation
Point is mapped on the boundary of the panel colour gamut, i.e., is mapped according to mapping arrow direction in Fig. 5.If being located at high luminance area
Domain is mapped on the boundary of the panel colour gamut by minimum chromatism method.
Step S105: according in the step S104 the Lab value and the coordinate value, conversion map Cheng Xin's is described
The digit value in panel colour gamut.
It has carried out also needing that the Lab value of mapping point is turned to empirical equation again after the completion of relevant calculation maps by function
It is changed to tristimulus values, optical value, finally in the RGB digit value for being converted to color dot.At this point, step S105 specifically further includes as follows
Step:
S500: the Lab value of the color dot P ' is obtained；
S501: the Lab value in the step S500 is converted into XYZ tristimulus values；
S502: the tristimulus values is converted into rgb light value；
S503: the rgb light value is converted into RGB digit value.
Finally in the RGB digit value of output slab colour gamut.Entire intersection colour gamut and target color gamut region are completed as a result,
Except color dot mapping.
In this announcement embodiment, method of color gamut mapping of color is applied in display panel, and method of color gamut mapping of color operates on service
In device.Display panel includes memory and processor.Memory is to store a plurality of program codes, a plurality of program code packets
Containing each module.Function of the processor to execute each module, to realize each step of above-mentioned method of color gamut mapping of color.
In this announcement embodiment, a kind of method of color gamut mapping of color is provided, solves color dot and panel outside target color gamut
The problem of color dot mapping inaccuracy in the case of colour gamut and target color gamut intersect, by the mapping method of this announcement, so that originally
The level for mapping to the color region of same point is distinguished, while improving the level of detail of color, and introduces adjusting
Parameter alpha and the method specifically judged for specific color dot, the optimization realized between color difference, chroma and brightness are reflected
It penetrates.
This announcement embodiment also provides a kind of electronic equipment, as shown in fig. 6, Fig. 6 is the electronics that this announcement embodiment provides
Equipment schematic diagram.The electronic equipment 600 includes processor 601, and the processor 601 realizes movement for executing instruction,
The execution method executed instruction includes the method for color gamut mapping of color that this announcement embodiment provides.
This announcement embodiment also provides a kind of storage medium, and the storage medium has store instruction, and described instruction is performed
When method include the method for color gamut mapping of color provided in this announcement embodiment, the storage medium may be provided at this announcement embodiment
In the electronic equipment of offer.
A kind of method of color gamut mapping of color, electronic equipment and storage medium provided by this announcement embodiment have been carried out in detail above
It is thin to introduce, the technical solution and its core concept of this announcement that the above embodiments are only used to help understand；This field
Those of ordinary skill it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, and these
It modifies or replaces, it does not separate the essence of the corresponding technical solution, and this discloses the range of the technical solution of each embodiment.
Claims (10)
1. a kind of method of color gamut mapping of color, which comprises the steps of:
S100: panel colour gamut and target color gamut are determined in same color gamut space, inputs the original color point P in the target color gamut
Digit value；
S101: obtaining color space (Lab) value of the color dot P, obtains hue angle (H), chroma by the color space value
Coordinate (C), lightness dimension (L) value, and determine that the planar boundary profile of the place color dot P colour gamut and the color dot P are corresponding
The colour gamut plane in the chroma coordinates and the lightness dimension coordinate position (Cp, Lp)；
S102: judge that the color dot P is located in the panel colour gamut outside the still panel colour gamut according to the coordinate position；
S103: if the color dot P is located in the panel colour gamut, the Lab of the color dot P is obtained according to the step S101
Value, and the digit value in the panel colour gamut of conversion map Cheng Xin；
S104: if the color dot P is located at outside the panel colour gamut, the Lab value and coordinate bit of the color dot P are redefined
It sets, obtains new color dot P ', and judge gamut regions locating for the new color dot P '；
S105: according in the step S104 the Lab value and the coordinate value, conversion map is at the new panel colour gamut
In digit value.
2. method of color gamut mapping of color according to claim 1, which is characterized in that further include walking as follows in the step S100
It is rapid:
S200: the digit value of the RGB of the target is obtained by target operation；
S201: the digit value in the step S200 is converted to rgb light value by algorithm；
S202: the optical value in the step S201 is converted to XYZ tristimulus values；
S203: the XYZ tristimulus values in the step S202 is converted to the Lab value of Lab space.
3. method of color gamut mapping of color according to claim 2, which is characterized in that in the step S201, the algorithm is number
Bit function algorithm and Gamma function algorithm.
4. method of color gamut mapping of color according to claim 1, which is characterized in that the step S104 further includes following steps:
S300: the boundary slope of the planar boundary profile is determined；
S301: the coordinate position of the color dot P ' is determined by adjustment parameter α；
S302: a fixed point P in C reference axis is determinedccCoordinate position；
S303: judging color dot P gamut regions locating in coloration map,
If the color dot P is located at high-brightness region, it is mapped to by minimum chromatism method on the boundary of the panel colour gamut；
If the color dot P is located at high zone of saturation, the side of the panel colour gamut is mapped to towards the coordinate position of the color dot P
In boundary；
If the color dot P is located at low brightness area, it is mapped to far from the fixed point on the boundary of the panel colour gamut.
5. method of color gamut mapping of color according to claim 4, which is characterized in that the step S301 further includes following steps:
S400: the slope k of planar boundary profile in the panel colour gamut and the target color gamut1、k2、k3、k4Size；
S401: if k1< k2, then the adjustment parameter
If k1> k2, then the adjustment parameter
6. method of color gamut mapping of color according to claim 4, which is characterized in that in the step S301, the C of the color dot P '
Coordinate C=(1- α) * C of reference axisp, the color dot P L coordinate axis coordinate L=Lp。
7. method of color gamut mapping of color according to claim 1, which is characterized in that further include walking as follows in the step S105
It is rapid:
S500: the Lab value of the color dot P ' is obtained；
S501: the Lab value in the step S500 is converted into XYZ tristimulus values；
S502: the tristimulus values is converted into rgb light value；
S503: the rgb light value is converted into RGB digit value.
8. method of color gamut mapping of color according to claim 1, which is characterized in that in the step S103, the color dot P and institute
It is identical to state color dot P ' value.
9. a kind of electronic equipment, which is characterized in that including processor, the processor is for executing instruction to realize as right is wanted
Seek the described in any item methods of 1-8.
10. a kind of readable storage medium storing program for executing is stored with instruction, which is characterized in that described instruction is performed realization such as claim
The described in any item methods of 1-8.
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| CN112071257A (en) * | 2020-07-31 | 2020-12-11 | 佛山市青松科技股份有限公司 | LED screen correction method and device, storage medium and LED screen |
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