Method and apparatus for encoding an image signal having an obje

Details Method and apparatus for encoding an image signal having an obje Method and apparatus for encoding an image signal having an obje

1996-04-08

1997-05-27

Au, Amelia

Television

Bandwidth reduction system

Data rate reduction

382242, H04N 730, G06K 900

Patent

active

056336853

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

REFERENCES:
patent: 5105472 (1992-04-01), Murayama
patent: 5333213 (1994-07-01), Koyama et al.

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