Method of color components compression
AssigneeHimax Technologies Limited
InventorYing-Ru Chen
Life of this patent
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Abstract
A method of color components compression is provided. In the present method, when receiving video data encoded by a 4:4:4 sampling format, color components of each set of neighboring pixels in the video data is down-sampled and a first difference of the color components between the video data before and after down-sampling in a down-sampling mode is calculated. Then, the color components of each pixel in the video data are truncated and a second difference of the color components between the video data before and after truncation in a truncation mode is calculated. The first difference and the second difference are compared and the down-sampling mode or the truncation mode that has a smaller difference is selected to compress the video data into a 4:2:2 sampling format.
Claims11
A method of color components compression, comprising:
- receiving video data encoded by a 4:4:4 sampling format;
- down-sampling color components of each set of neighboring pixels in the video data and calculating a first difference of the color components between the video data before and after down-sampling in a down-sampling mode;
- truncating the color components of each pixel in the video data and calculating a second difference of the color components between the video data before and after truncation in a truncation mode;
- and
- comparing the first difference and the second difference and selecting one of the down-sampling mode and the truncation mode that has a smaller difference to compress the video data into a 4:2:2 sampling format.
Dependencies are inferred from the claim text.