Image processing method and apparatus

Details Image processing method and apparatus Image processing method and apparatus

1996-08-28

1998-05-05

Mancuso, Joseph

Image analysis

Image compression or coding

Shape, icon, or feature-based compression

358433, 382246, 382268, G06K 936

Patent

active

057487880

ABSTRACT:
A noise reduction apparatus in which decoded image data is input to a block division circuit which divides the input image into blocks each consisting of N.times.N pixels. A process block determination circuit determines the presence/absence of an edge from estimated values of four corner points of an objective block divided by the block division circuit. The process block determination circuit determines the size of a process block in accordance with the determination result. A linear interpolation circuit performs linear interpolation of the process block determined by the process block determination circuit, and outputs corrected image data.

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patent: 5109438 (1992-04-01), Alves et al.
patent: 5241395 (1993-08-01), Chen
patent: 5282255 (1994-01-01), Bovik et al.
patent: 5561608 (1996-10-01), Shimoda et al.
patent: 5576767 (1996-11-01), Lee et al.

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