Patent ID: 6347157
Filing Date: 2002-02-12
Classification: G06F,H04N

Abstract:
An video data processing system, comprising:apparatus for providing a sequence of video frames, each video frame containing an array of image data representing an image; a spatial transform module for performing a spatial decomposition transform on the video frames to generate spatially transformed video frames; each of the spatially transformed video frames including a plurality of subbands of data, including at least one low spatial frequency subband of data; and memory for storing the spatially transformed video frames; a temporal transform module for performing a temporal decomposition transform on blocks of the spatially transformed video frames, each block containing a predefined number of the spatially transformed video frames in a sequence corresponding to the sequence of the corresponding video frames, the temporal transform module applying a temporal decomposition transform to the at least one low spatial frequency subband of data in the spatially transformed video frames so as to generate temporally transformed video data for the at least one low spatial frequency subband of data in the spatially transformed video frames; and a data encoder for encoding, for each block of video frames, the temporally transformed video data and the subbands of data, if any, of the spatially transformed video frames in the block to which the temporal decomposition transform was not applied.