초록 ▼

An efficient video encoder and a compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector and a motion compensator. The motion detector includes an image transformin

An efficient video encoder and a compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector and a motion compensator. The motion detector includes an image transforming unit that transforms a reference picture portion into a picture portion having a predefined shape. The motion compensator includes a pel determinator for determining integer pels of real sample points of the transformed reference picture portion that corresponds to an integer pel of the input picture block according to the motion parameters supplied from the motion detector as a result of the comparison so as to supply prediction picture data. The video encoder and a decoder having a motion compensator that performs operations similar to the video encoder are combined to form a video encoding and decoding system.

대표청구항 ▼

1. A video encoder for performing motion compensated prediction encoding of block-divided input image, comprising:a motion detector for detecting at least one motion parameter providing minimum prediction error, including an image transformation unit for transforming a reference image portion into a

1. A video encoder for performing motion compensated prediction encoding of block-divided input image, comprising:a motion detector for detecting at least one motion parameter providing minimum prediction error, including an image transformation unit for transforming a reference image portion into a transformed image portion using a given transformation, and for matching the transformed reference image portion with an input image portion; a motion compensator for outputting a motion compensated prediction image, including a corresponding pel determinator for determining pels for transforming the reference image portion based on the motion parameters; a multiplexer for multiplexing said motion parameters together with the information which indicates a given transformation to the encoded bitstream; and wherein the image transformation unit transforms a reference image portion comprised of half-pels as well as integer pels into the transformed image portion.