Method for data coding

Details Method for data coding Method for data coding

1987-04-24

1990-08-07

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358433, G06K 936

Patent

active

049474472

ABSTRACT:
Numerical data in a two-dimensional distribution for encoding picture data or voice data at high efficiency is divided into blocks being not equal in length depending on an amount of variation of each numeric data. The numeric data within the divided blocks is converted into data corresponding to an apex of each block, and the converted data is encoded into tree-structure data. Image data is divided into blocks being not equal in length depending on amount of variation of brightness, and the brightness within the divided blocks is converted into data corresponding to an apex of each block, and the converted data is encoded into tree-structure data. Range of values to be taken by data is divided into a range of normal values and a range of abnormal values, and a short bit number is assigned to the quantizing level in the range of normal values and a long bit number is assigned to quantizing level of other data, thereby the variable length coding at two steps is performed.

REFERENCES:
patent: 4319267 (1982-03-01), Mitsuya et al.
patent: 4409623 (1983-10-01), Kobayashi et al.
patent: 4567519 (1986-01-01), Richard
patent: 4682300 (1987-07-01), Seto et al.
patent: 4691329 (1987-09-01), Juri et al.
patent: 4710811 (1987-12-01), Kondo
patent: 4751742 (1988-06-01), Meeker
patent: 4757552 (1988-07-01), Asano et al.
patent: 4764975 (1988-08-01), Inoue
patent: 4772947 (1988-09-01), Kono
patent: 4788598 (1988-11-01), Ochi et al.

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