A low-complexity multiple description video coder based on 3D-transforms

The paper presents a multiple description (MD) video coder based on three-dimensional (3D) transforms. The coder has low computational complexity and high robustness to transmission errors and is targeted to mobile devices. The encoder represents video sequence in a form of coarse sequence approximation (shaper) included in both descriptions and residual sequence (details) split between two descriptions. The shaper is obtained by block-wise pruned 3D-DCT. The residual sequence is coded by 3D-DCT or hybrid 3D-transform. The coding scheme is simple and yet outperforms some MD coders based on motion-compensated prediction, especially in the low-redundancy region.