Image encoding apparatus

Details Image encoding apparatus Image encoding apparatus

1989-02-22

1990-08-21

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, H04N 713

Patent

active

049511408

ABSTRACT:
An image encoding apparatus has a memory for storing image data corresponding to an object for every frame, and a face region detecting circuit for detecting a difference between input frame image data and preceding frame image data, and extracting image data of a face region of the object on the basis of the difference data. More bits are allocated to the extracted face region than those to the remaining image region.

REFERENCES:
patent: 4369464 (1983-01-01), Temime
patent: 4494144 (1985-01-01), Brown
SPIE vol. 804 Advances in Image Processing pp. 379-384 "An Image Knowledge Based Video Codec for Low Bitrates"; R.H.J.M. Plompen et al; Mar. 31, 1987.
Technical Report of the Institute of Televison Engineers of Japan IPA 87-39; Y. Nagashima et al; 1987/Jaspanese Patent Disclosure (Kokai No. 63-187889.
National Conference Record, 1987 Information and Systems. The Institute of Electronics, Information and Communication Engineers.

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