METHOD OF VIDEO CODING AND DECODING

摘要

The present invention applies to video coding/decoding and discloses a method for transforming to/from transform coefficients and residual pixel data in moving pictures by a set of semi-ortonormal basis vectors. The basis vectors are derived from conventional DCT or KTL matrix'es, but relaxes to some extend the requirements for ortogonality, norm equality and element size limitation. In this way the present invention provides improved coding efficiency and lower complexity compared to previously used integer transforms.