Video Signal Palette Map Construction and Sample Reconstruction

The patent changes the parameter representation by using palette indices (small integer values) instead of full color values (large byte values). This parameter transformation reduces the data size while maintaining image quality, as the same visual information can be represented more compactly through indexing into a shared palette structure.

The patent creates a shared palette structure that can be copied and reused across multiple video blocks. Instead of storing complete color information for each block, the system copies the palette structure and uses indices to reference colors, significantly reducing redundant data while preserving high-quality visual representation.

The patent segments the video content into blocks that can independently use the palette mode. By dividing the video into manageable segments and applying compression techniques at the block level, the encoding process becomes more organized and less complex, as each block can be processed separately with standardized procedures.

The patent creates a universal palette structure that serves multiple functions: it stores color information, provides indexing mechanisms, and enables shared reference across blocks. This multi-functional approach simplifies the encoding process by consolidating multiple operations into a single standardized structure that handles various compression tasks.