Importance

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Abstract

Regions of a video frame are classified into different classes of regions (e.g., inter encoded blocks, intra encoded blocks, and skip blocks). The classes of regions are then run-length encoded using an encoding sequence that is a function of the content of the video frame. The run-length encoded signals are used to generate an encoded bit stream for the video frame. In preferred embodiments, the run-length encoding sequence either is selected from a set of possible sequences or is generated based on a selected location within the video frame. The selected sequence or location is identified explicitly in the encoded bit stream and used by a decoder to select/generate the run-length decoding sequence used to decode the run-length encoded signals in the encoded bit stream that correspond to the classes of regions in the video frame.

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