High-dynamic-range video tone mapping

[0016]The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

[0017]FIG. 1 is a block diagram of a video controller in accordance with an embodiment of the invention. As shown in FIG. 1, the video controller 100 includes a color-space converter 110, a de-gamma unit 111, a gamut mapping unit 112, a tone-mapping unit 113, a gamma unit 114, a color-space converter 115, a histogram calculator 116, a local-contrast enhancement unit 117, and a histogram calculator 118. The video controller 100 can be electrically connected to a display panel 120 via a multimedia transmission interface such as high-definition multimedia interface (HDMI) version 2.0 A or above, and the display panel 120 may display the output linear RGB video signal from th