Color gamut expansion mapping system of laser television and method thereof

A technology for laser TV and color gamut expansion, which is applied in the field of color gamut expansion mapping system, can solve the problems of color deviation, confusion, and can not reflect the advantages of wide color gamut of laser display equipment, and achieves small calculation amount, good real-time performance and display effect. Good results

Inactive Publication Date: 2010-06-23
SHANDONG UNIV
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Problems solved by technology

Directly using the existing video signal to drive the laser display system will not only fail to refl...

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  • Color gamut expansion mapping system of laser television and method thereof
  • Color gamut expansion mapping system of laser television and method thereof
  • Color gamut expansion mapping system of laser television and method thereof

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] A color gamut extension mapping method for laser TV, its steps are:

[0031] Step 1) Sample the surface of the RGB color cube.

[0032] Set one of the three variables R, G, and B to 0 or the maximum value, and then change the values ​​of the other two variables uniformly according to the set step size (1 / 16 of the maximum value); the sampling point is at The RGB space is evenly distributed on six planes, and the sampling points on each plane can form a series of triangles.

[0033] The construction process of the triangle is as follows, taking the R=0 plane as an example, the R component is 0, the G and B components take 16 as the step size, and sample uniformly within the range of 0-255, resulting in 256 sampling points. As shown in the figure, the points (0, 0, 0), (0, 0, 16), (0, 16, 0), (0, 16, 16) form two triangles, and so on, R=0 plane ...

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Abstract

The invention relates to a color gamut expansion mapping system of laser television and a method thereof. The method thereof, which is simple and convenient, can sufficiently represent wide color gamut of laser display equipment and comprises the steps: 1) evenly sampling on RGB color cube surface and storing according to a set order; 2) computing the CIELUV values of sampling points under PLA-system color television standard color gamut and laser display color gamut, so as to form two color gamut boundaries; 3) evenly dividing RGB space into 16x16x16 small cubes and computing the CIELUV values of the peaks of the small cubes; in CIELUV space, solving the intersection points between a straight line, determined by inputting color points and a central point of lightness axis, and two color gamut boundaries; 4) determining the proportion for extension according to the ratio of two intersection points; 5) converting LUV values after extension into RGB drive values for the laser display equipment; and 6) storing the mapping values of the peaks of the small cubes, namely the obtained RGB drive values for the laser display equipment, in a three-dimensional lookup table to construct the color gamut mapping system, and implementing color gamut expansion mapping on any input RGB value in a manner of table lookup and interpolation.

Description

technical field [0001] The invention belongs to the field of video display, and relates to a laser TV color gamut extension mapping system and a method thereof. Background technique [0002] The color rendering of color TVs, monitors and other equipment is based on the synthesis principle of red, green and blue three primary colors. The color that can be restored by a given set of primary colors is in the triangular area with the point where the three primary colors are located as the vertex. At present, there are only a few international standards for the choice of three primary colors. [0003] Laser TV has broad development prospects due to its wide color gamut and strong color performance. However, the three primary colors used in laser display are different from the three primary colors used in existing video standards. The difference between the two is relatively large, and the color gamut of the laser display system is also much larger than that of existing video sta...

Claims

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Application Information

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IPC IPC(8): H04N9/64
Inventor 宋刚王洪君万强刘英李义辉邱天星
Owner SHANDONG UNIV
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