Title:
【発明の名称】ベクトル量子化による画像デ―タの圧縮装置
Document Type and Number:
Japanese Patent JP2532909
Kind Code:
B2
Abstract:
A method of compressing image signals by vector quantization comprises the steps of dividing two-dimensional image signals into blocks B each comprising the signals at adjacent picture elements, selecting a vector that corresponds with the minimum distortion to the differences between the image signals in each block B and a representative value m of signals or interpolation-predicted values for the image signals, and encoding the information representing the selected vector, and the information representing the representative value m or the information utilized for calculating the interpolation-predicted values. The two-dimensional image signals are divided into blocks B' deviated from the blocks B. For each of partial regions of the block B overlapping the blocks B', a representative value n calculated for the block B' including the partial region is used as the representative value m for the partial region. Or, the interpolation-predicted values in the block B are predicted based on the representative values n in all of the blocks B' partially overlapping the block B.
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Inventors:
TANAKA YASUYUKI
Application Number:
JP4171788A
Publication Date:
September 11, 1996
Filing Date:
February 24, 1988
Export Citation:
Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
G06T9/00; H04N1/41; H03M7/30; H04N19/423; H04N19/50; H04N19/86; H04N19/94; (IPC1-7): H04N7/32; H04N1/41
Domestic Patent References:
| JP6096079A |
Attorney, Agent or Firm:
Seiji Yanagida (1 person outside)