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Distributed video coding (DVC) arouses high interests due to its property of low-complexity encoding. This paper proposes a robust multiple description DVC (MDDVC) under the constraint of low-complexity encoding. In MDDVC,zeros are padded to each frame and the resulting big-size video is divided into multiple descriptions. Then,each description is compressed by a hybrid DVC (HDVC) codec and trans-mitted over different channel. When one channel does not work,the lost HDVC description is estimated by the received from other channel,which guarantees the robustness of the system;MDDVC moves the complex motion estimation totally to the decoder so it features low-complexity encoding. In the pre-processing,an optimized zero-padding is also proposed to improve the performance. Experimen-tal results exhibit that the proposed MDDVC scheme achieves better rate-distortion performance and robustness than the referenced especially when packet-loss rate is high.
This paper proposes a robust multiple description DVC (MDDVC) under the constraint of low-complexity encoding. In MDDVC, zeros are padded to each frame and the Each of the description is compressed by a hybrid DVC (HDVC) codec and trans-mitted over different channel. When one channel does not work, the lost HDVC description is estimated by the received from other channel, which guarantees the robustness of the system; MDDVC moves the complex motion estimation totally to the decoder so it features low-complexity encoding. In the pre-processing, an optimized zero-padding is also proposed to improve the performance. Experimen- tal results exhibit that the proposed MDDVC scheme achieves better rate-distortion performance and robustness than the referenced especially when packet-loss rate is high.