Image encoding method and apparatus providing variable length bi

Details Image encoding method and apparatus providing variable length bi Image encoding method and apparatus providing variable length bi

1992-11-25

1994-05-31

Mancuso, Joseph

Facsimile and static presentation processing

Natural color facsimile

Specific image-processing circuitry

382 56, 358427, 3582612, H04N 1102

Patent

active

053174283

ABSTRACT:
There is provided an image encoding method in a facsimile apparatus or an image filing apparatus as an image communication apparatus. In this method, a color image signal which is expressed by a plurality of color component signals to be encoded is input, the input color image signal is converted into a bit stream signal, and the bit stream signal is encoded by the prediction encoding. A parameter for the prediction encoding is changed in accordance with the color image signal to be encoded. The encoding operation is executed adaptively to the color image signal to be encoded. By bit stream converting the binary color signal, the efficient encoding using the color correlation can be executed and an increase in data amount is prevented. By encoding the bit stream signal by using a dynamic arithmetic code, a binary color image can be efficiently encoded.

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patent: 4939583 (1990-07-01), Tsuboi et al.
patent: 4982282 (1991-01-01), Saito et al.
"Compression of Black-White Images with Arithmetic Coding", Langdon et al., IEEE Trans. Comm. vol. COM-29, No. 6, Jun. 1981.

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