Method and apparatus for converting N-value image to M-value ima

Details Method and apparatus for converting N-value image to M-value ima Method and apparatus for converting N-value image to M-value ima

1994-12-29

1999-12-28

Chang, Jon

Image analysis

Histogram processing

358455, G06K 936

Patent

active

060091932

ABSTRACT:
An image processing method converts an N-value image into an M-value image (N<M). The method obtains an appearance frequency distribution of M-value image data corresponding to a predetermined N-value pattern around an objective pixel of N-value image data, to which an M-value image (M<N) is converted, for each of N-value patterns different from each other. The method then estimates M-value image data corresponding to a given N-value image on the basis of the appearance frequency distribution.

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