Method and apparatus for gray-level quantization

Details Method and apparatus for gray-level quantization Method and apparatus for gray-level quantization

1993-03-09

1995-08-01

Mancuso, Joseph

Image analysis

Image enhancement or restoration

Variable threshold, gain, or slice level

358430, 358466, 382261, G26K 938

Patent

active

054386330

ABSTRACT:
An adaptive quantizer for digital image processing eliminates the influence of non-information anomalies, such as scratches, dust, etc. that may be present in an image in the course of determining the minimum and maximum signal levels LCHAR and HCHAR, respectively, and more accurately updates respective estimated image information level PREV.sub.-- HCHAR that effectively prevents discontinuities or `jumps` during line-by-line adjustment, thereby effectively obviating the problem of potential corruption of a local mean window and taking into account how `noisy` the background is.

REFERENCES:
patent: 4302672 (1981-11-01), Kato et al.
patent: 4438495 (1984-03-01), Collins et al.
patent: 4644419 (1987-02-01), Schlichtig
patent: 4701807 (1987-10-01), Ogino
patent: 4788976 (1988-11-01), Takao et al.
patent: 4903316 (1990-02-01), Hongo et al.
patent: 5170443 (1992-12-01), Todd

Affiliated with

Also associated with

Rating

Method and apparatus for gray-level quantization does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for gray-level quantization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for gray-level quantization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-738990