Patent ID: 6330284
Filing Date: 2001-12-11
Classification: G06T,H04N

Abstract:
A computer system for encoding pictures, comprising:a resolution conversion section for reducing a picture signal applied to a first input thereof to control an amount of generated codes of the picture signal by changing a resolution conversion according to a reduction ratio setting information signal applied to a second input thereof and indicating a conversion ratio of 1, 1/2 or 1/4, the picture signal indicating information for discriminating a picture between an object region and a background region, the resolution conversion section outputting a reduced picture signal;an encoder connected to the resolution conversion section and receiving the reduction ratio setting information signal, for encoding the reduced picture signal output from said resolution conversion section and for outputting coded picture data;a multiplexer connected to the encoder and the reduction ratio setting information signal, for multiplexing the coded picture data and the reduction ratio setting information signal and outputting a multiplexed signal; andan enlargement resolution conversion section for inputting the reduced picture signal output by the resolution conversion section and the reduction ratio setting information signal and outputting a local decoded signal which has been enlarged by an amount which inversely corresponds to the reduction ratio setting information signal indicating the conversion ratio of 1, 1/2 or 1/4.