TECHNIQUES FOR ADVANCED CHROMA PROCESSING

摘要

Image and video processing techniques are disclosed for processing components of a color space individually by determining limits for each component based on the relationship between each component in a color space. These limits may then be used to clip each component such that the component values are within the determined range for that component. In this manner, more efficient processing of images and/or video may be achieved.

主权项

1. A method for processing image data having a luma component, a first chroma component and a second chroma component, comprising:
for each chroma component:
determining chroma limit values based on the luma component of input image data according to relationships among the luma and chroma components;performing a processing operation upon the chroma component to produce a respective first set of chroma component values;clipping values of the respective first set of chroma component values that are beyond the chroma limit values to produce a clipped set of chroma component values;performing the processing operation upon the clipped set of chroma component values in a second direction to produce a respective second set of chroma component values, and clipping values of the respective second set of chroma component values that are beyond the chroma limit values to produce a second clipped set of chroma component values.