Abstract
Video encoders may use several techniques to improve error resilience. In particular, for video encoders that rely on predictive (inter) coding to remove temporal redundancy, intra coding refreshment is especially useful to stop error propagation when errors occur in the transmission or storage of the coded streams, which can cause the decoded quality to decay very rapidly. In object-based video coders, intra coding refreshment can be applied to both shape and texture data. In this paper, a novel combined intra refreshment scheme is proposed which can be used by object-based video encoders, such as MPEG-4 video encoders, to adaptively determine when the shape and texture of the video objects in a scene should be refreshed in order to maximize the decoded video quality for a certain amount of bitrate resources.
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