System and method for picture image processing employing transfo

Details System and method for picture image processing employing transfo System and method for picture image processing employing transfo

1994-04-20

1995-07-18

Moore, David K.

Image analysis

Image enhancement or restoration

Variable threshold, gain, or slice level

382273, 358465, G06K 938

Patent

active

054349311

ABSTRACT:
A method of picture image processing, and system for carrying out same, involves generation of a composite mapping function, for transforming gray scale values to different values in order to enhance contrast. A reduced range histogram is generated, involving removing a percentage of the total histogram counts from bottom and top sub-ranges and also removing spikes. The reduced histogram is then density averaged in order to obtain a first map function. A second map function is generated for interfacing with the characteristics of the printer to be used, and a composite mapping transform is generated by combining the two generated functions. After the composite mapping function is generated, each gray value of the image data set is transformed in accordance with the composite function, for use in printing, thereby providing an enhanced contrast image.

REFERENCES:
patent: 3983320 (1976-09-01), Ketcham et al.
patent: 4445138 (1984-04-01), Zwirn et al.
patent: 4695884 (1987-09-01), Anastassiou et al.
patent: 5063607 (1991-11-01), FitzHenry et al.
Digital Image Processsing, A Systems Approach, William B. Green, Van Nostrand Reinhold Company, Inc. 1983, pp. 50-60.
Handbook of Pattern Recognition and Image Processing, Tzay Y. Young and King-Sun Fu, Academic Press, Inc. 1986, pp. 195-197, 213.
Algorithms for Graphics and Image Processing, Theo Pavlidis, Computer Science Press, 1982, pp. 50-54.

Affiliated with

Also associated with

Rating

System and method for picture image processing employing transfo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for picture image processing employing transfo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for picture image processing employing transfo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2421704