We propose pre and post-filters for low bit rate video coding. The purpose of the former is to make the video sequence easier to encode, whereas the latter aims to remove coding artifacts. The proposed techniques are computationally efficient and lead to scalable architectures which (1) can handle varied types of video content and (2) can be adapted to the available bandwidth and computational resources. Simulation results using H.263 show that significant gains can be achieved by pre and post-filtering.
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