Color gamut mapping method and color gamut mapping device
AssigneesHuizhou China Star Optoelectronics Display Co., Ltd., Tcl China Star Optoelectronics Technology Co., Ltd.
InventorZhongbin Wang
Life of this patent
Estimating the term…
Abstract
The present application provides a color gamut mapping method and a color gamut mapping device for use in a splicing display device. Display screens in the splicing display device have different color gamuts. By mapping the color gamuts of multiple display screens to the display screen which is the uniquely determined display screen in the splicing display device, the color gamuts of all the display screens in the splicing display device are the same, and colors displayed on different screens are also the same. Accordingly, the present application improves uneven images and the image quality.
Claims20
A color gamut mapping method, for use in a splicing display device, wherein the splicing display device comprises a first display screen and a second display screen spliced together, and a color gamut of the first display screen in a preset color gamut coordinate system corresponds to a first color gamut triangle, a color gamut of the second display screen in the preset color gamut coordinate system corresponds to a second color gamut triangle corresponding to the first color gamut triangle formed in a preset coordinate system, the color gamut of the second display screen corresponds to the second color gamut triangle formed in the preset coordinate system, and the color gamuts of the first display screen and the second display screen are different;
- wherein the color gamut mapping method comprises:
- rotating the first color gamut triangle so that color gamut sides of the rotated first color gamut triangle are parallel to respective color gamut sides of the second color gamut triangle to obtain a third color gamut triangle;
- determining a color gamut adjustment scaling factor of the first color gamut triangle according to the third color gamut triangle and the first color gamut triangle;
- and
- scaling the third color gamut triangle according to the color gamut adjustment scaling factor, such that the third color gamut triangle is converted to the second color gamut triangle, and the color gamut of the first display screen matches the color gamut of the second display screen.
A color gamut mapping device, for use in a splicing display device, wherein the splicing display device comprises a first display screen and a second display screen spliced together, and a color gamut of the first display screen in a preset color gamut coordinate system corresponds to a first color gamut triangle formed in a preset coordinate system, a color gamut of the second display screen corresponds to a second color gamut triangle formed in the preset coordinate system, and the color gamuts of the first display screen and the second display screen are different;
- wherein the color gamut mapping device comprises:
- a rotation module for rotating the first color gamut triangle so that color gamut sides of the rotated first color gamut triangle are parallel to respective color gamut sides of the second color gamut triangle to obtain a third color gamut triangle;
- a determining module for determining a color gamut adjustment scaling factor of the first color gamut triangle according to the third color gamut triangle and the first color gamut triangle;
- and
- a conversion module for scaling the third color gamut triangle according to the color gamut adjustment scaling factor, such that the third color gamut triangle is converted to the second color gamut triangle, and the color gamut of the first display screen matches the color gamut of the second display screen.
Dependencies are inferred from the claim text.