Method of converting gradation of a digital image and a circuit

Details Method of converting gradation of a digital image and a circuit Method of converting gradation of a digital image and a circuit

1991-05-28

1993-03-02

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358458, H04N 140

Patent

active

051914441

ABSTRACT:
A method of converting gradation of a digital image data so as to reduce the number of gradation, a circuit thereof, a print density controlling apparatus for a printer and a printer using the method, in which the number of gradation being converted into one gradation is set smaller for the portion of low gradation of the original data than for the portion of high gradation thereof, so that the gradation of the low-gradation portion is smoothly varied visually in the image after gradation conversion.

REFERENCES:
patent: 4534059 (1985-08-01), Yamada
patent: 4590491 (1986-05-01), Hori et al.
patent: 4695884 (1987-09-01), Anastassiou et al.
patent: 4777536 (1988-10-01), Kato
patent: 4829584 (1989-05-01), Shimano
patent: 4962433 (1990-10-01), Matsushima
Gonzalez and Wintz, Image Enhancement, Digital Image Processing, 2nd edition, 1987, pp. 139-153.

Affiliated with

Also associated with

Rating

Method of converting gradation of a digital image and a circuit 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 of converting gradation of a digital image and a circuit , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of converting gradation of a digital image and a circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-130546