KT Corporation
Method and apparatus for predicting and restoring a video signal using palette entry

Abstract:

Provided is a method for decoding a video signal. Such a method may include constructing a palette map for a current block encoded in a palette mode, the palette map comprising at least one palette entry and a map index that identifies the palette entry, deriving a palette index of the current block on a sample-by-sample basis, and reconstructing a current sample based on an escape mode if a value of the palette index relating to the current sample of the current block is equal to the number of palette entries constituting the palette map of the current block, wherein the escape mode is a method of restoring a sample value based on a signaled palette escape value, without using a palette entry of the constructed palette map.