Method and apparatus for texture compression using block-tile based sampled texture synthesis

Abstract

Methods and apparatus are provided for texture compression utilizing block tile-based sampled texture synthesis. An apparatus includes an encoder for encoding a texture of a picture by synthesizing the texture. The encoder utilizes a tile-based sampling method to perform texture synthesis, thereby determining a "displacement vector" that indicates the location of the tile in the input sample texture to be synthesized. At the encoder, both the input sample texture and the information representing the "displacement vector" are encoded. At the decoder, new tiles are generated by directly utilizing the "displacement vector".

Description

technical field [0001] The principles of the present invention relate generally to video encoding and decoding, and more particularly to methods and apparatus for texture compression. Background technique [0002] While many image and video coding standards, recommendations, and extensions thereof (collectively referred to herein as video coding standards) exist, texture compression is a less well-developed technique. First, most of today's video coding standards utilize a transform-based approach to coding video pictures. In order to preserve the texture details for a specific video picture, this method requires a lot of bits, especially when the image requires a large textured background. [0003] In general, image regions can be classified as flat, edge or textured regions. Most current video coding standards employ a transform-based approach generally applied to video pictures, regardless of the type of regions contained in such pictures. When this transformation-base...

AI Technical Summary

Problems solved by technology

A drawback of this approach to texture synthesis is the high complexity required at both the encoder and decoder for analyzing and reconstructing the texture

Images