A Low Cmplexity Encoding Scheme for Coarse Granular Scalable Video Coding

스케일러블 비디오 부호화에서 CGS 화질 계위를 위한 저 복잡도 부호화 기법

A low complexity encoding scheme for coarse grain scalability is proposed. The proposed method exploits the statistics of residuals between current and reference blocks using the macroblock mode predicted from the previous quality layer. To test how the mode is optimal in the current layer, the statistical hypothesis testing for the variances of the residual sub-blocks is performed. The proposed method reduces the total encoding time up to 51% when three CGS scalability layers are encoded. However, the quality degradation and bit-rate increment of the each layer are negligible.