Patent ID: 6020923
Filing Date: 2000-02-01
Classification: H04N

Abstract:
A coding apparatus for coding an image signal, comprising:means for receiving a low resolution image signal consisting of a plurality of pixels as well as a high resolution image signal consisting of a plurality of pixels, said high resolution image signal having a higher resolution than said low resolution image signal;first coding means for coding said low resolution image signal;predicting means for predicting said high resolution image signal from said low resolution image signal thereby generating a predicted high resolution image signal;judgement means for dividing said predicted high resolution image signal into a plurality of blocks each including n.times.m pixels, and then detecting a pre-determined feature of each block and finally outputting a judgement code corresponding to said feature; andsecond coding means for selecting a coding table in accordance with said judgement code and then coding the n.times.m pixels in the corresponding block of said high resolution image signal using said selected coding table.