A Novel Scalable Texture Video Coding Scheme with GPCA

This paper proposes a novel SNR scalable coding method with the support of generalized principle component analysis (GPCA). This method encodes the low-pass and high-pass pictures generated by the MCTF decomposition with a hybrid linear model instead of traditional block-based DCT transform. GPCA is a powerful tool to identify the hybrid linear model in the textures, which segment the texture into heterogeneous regions, and then encode each region with PCA method. By keeping various proportions of PCA coefficients, and altering the quantization step sizes for different layers, a better scalable coding result can be achieved.