Method and apparatus for processing an image signal having an ob

Details Method and apparatus for processing an image signal having an ob Method and apparatus for processing an image signal having an ob

1996-04-08

1998-07-07

Mancuso, Joseph

Image analysis

Image compression or coding

Transform coding

358428, 358433, 382277, 382300, G06K 936, G06K 946, G06K 932

Patent

active

057781010

ABSTRACT:
A processing block is processed by using an extension-interpolation ("E-I") technique, wherein the processing block consists of N.times.N pixels which are classified into object pixels and background pixels and the E-I procedure comprises the steps of: selecting L rows of the processing block, each having at least one object pixels; for each selected row, determining M representing a number of object pixels included therein and providing a first vector representing the M object pixels; for each first vector, selecting an extension matrix among a multiplicity of predetermined extension matrices based on the M and N values and multiplying the selected extension matrix to the first vector to provide an extended first vector; providing a first extended processing block which includes L rows, each row representing each of the extended first vectors; for each column of the first extended processing block, providing a corresponding L-dimensional second vector; selecting an extension matrix based on the L and N values; multiplying the selected extension matrix to each of the second vectors, to provide extended second processing block; and multiplying a block scaling factor to each pixels of the second extended processing block, to thereby provide the extended processing block.

REFERENCES:
patent: 3987412 (1976-10-01), Morrin, II
patent: 4661987 (1987-04-01), Anderson et al.
patent: 5216516 (1993-06-01), Tanaka et al.
patent: 5227875 (1993-07-01), Suu et al.
patent: 5495244 (1996-02-01), Je-Chang et al.
patent: 5633685 (1997-05-01), Cho et al.

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