Apparatus and method for encoding and decoding images

Details Apparatus and method for encoding and decoding images Apparatus and method for encoding and decoding images

H - Electricity

04

N

H04N 7/12 (2006.01) G06T 9/00 (2006.01) H04N 7/28 (2006.01) H04N 7/30 (2006.01) H04N 7/46 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2134681

A technique for encoding and decoding an image includes the following steps: subsampling the image to obtain a number of subsampled frames of spatially offset image-representative signals; transforming each of the subsampled frames to obtain a corresponding number of frames of transform coefficient- representative signals; forming vector-representative signals from corresponding coefficient-representative signals of the respective frames of coefficient-representative signals; performing a thresholding operation on the vector- representative signals to obtain thresholded vector- representative signals; vector quantizing the thresholded vector-representative signals to obtain encoded signals; storing the encoded signals; and decoding the encoded signals to obtain a recovered version of the image.

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