Novel prediction schemes for error resilient video coding

作者：Satyan Ramdas^*; Nyamweno Sunday; Labeau Fabrice

来源：Signal Processing: Image Communication , 2010, 25(9): 648-659.

DOI：10.1016/j.image.2010.05.001

• H 264/AVC
• Packet loss
• Error resilience
• Video coding

A conventional video codec uses encoder reconstruction of previous frames for motion compensated prediction This is designed to minimize the encoder prediction error and assumes error free transmission In this paper we use a modified prediction mechanism both at the encoder and decoder and propose techniques to improve the error resilience of H 264/AVC when transmitted over error prone networks In our schemes we provide greater emphasis on Intra pixels during the formation of the reference frame used for prediction thereby achieving better resilience We also incorporate leaky prediction to further improve the robustness We apply leaky prediction selectively at a macroblock level based on a simple mean square error metric in order to reduce the bit-rate penalty Substan

• 出版日期2010-10