Encoding/decoding apparatus using quantizing steps information

Details Encoding/decoding apparatus using quantizing steps information Encoding/decoding apparatus using quantizing steps information

1992-05-13

1997-08-12

Rogers, Scott A.

Image analysis

Image compression or coding

Transform coding

382250, 382251, 358432, 358433, H04N 141, H04N 1415

Patent

active

056573995

ABSTRACT:
In an encoder/decoder, a quantizer quantizes input image information, and a coefficient generator generates coefficient information for determining quantization steps of the quantizer. An encoder variable length encodes the quantized image information, and a divider divides the quantized image information into a plurality of blocks. The coefficient information is attached to each of the plurality of blocks for transmission to a decoder.

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