METHODS INCORPORATING EXTENSIONS TO COPY ABOVE MODE FOR PALETTE MODE CODING

摘要

Methods incorporating extensions to copy above mode for palette mode coding are disclosed. In one aspect the method includes coding a current pixel of a current block of video data in copy previous mode via coding a previous line index. The coding of the current pixel in copy previous mode further including identifying a number of candidate values for the previous line index identifying a number of escape pixels in a column of pixels above the current pixel in the current block and reducing a number of candidate values of the previous line index by the number of identified escape pixels.