IMAGE CODING METHOD

PURPOSE: To attain efficient coding even when an image magnified/reduced through zooming is in existence in a received image signal in the image coding method where in-frame coding is conducted for a prescribed frame interval, inter-frame prediction is applied to other frame attended with motion com...

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Bibliographic Details
Main Author SHIMAZAKI HIROAKI
Format Patent
LanguageEnglish
Published 13.12.1996
Edition6
Subjects
BASIC ELECTRONIC CIRCUITRY
CALCULATING
CODE CONVERSION IN GENERAL
CODING
COMPUTING
COUNTING
DECODING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:PURPOSE: To attain efficient coding even when an image magnified/reduced through zooming is in existence in a received image signal in the image coding method where in-frame coding is conducted for a prescribed frame interval, inter-frame prediction is applied to other frame attended with motion compensation and a predicted error is coded. CONSTITUTION: A zoomed part in a received image is detected by a zoom detector 20. When a quantizer 5 quantizes the detected zoomed part, number of transmission bits allocated to frames subject to in-frame coding is reduced in comparison with coding an image signal other than the zoomed part and number of transmission bits for frames for coding a prediction error for inter- frame prediction by the decrease. Thus, optimum coding is applied to the zoomed part and other part respectively.
Bibliography:Application Number: JP19950131332