Adaptive Rateless LDPC Code Used for Distributed Video Coding

To overcome the poor adaptive ability of the fixed-LDPC code applied to video compression, a kind of distributed video compression scheme based on rate less LDPC is proposed. A novel rate estimation scheme is also used in both decoder and encoder to reduce the complexity of decoder. While the added complexity of encoder and effected system ratio distortion performance is negligible. And the rateless LDPC supplies to design multiple code modes. Experiments results show that proposed scheme access the 1-2 dB gain of ratio distortion compared with LDPCA.