Method and apparatus for compressing dynamic ranges of images

Details Method and apparatus for compressing dynamic ranges of images Method and apparatus for compressing dynamic ranges of images

1996-04-19

1998-08-18

Boudreau, Leo H.

Image analysis

Image compression or coding

382128, G06K 900

Patent

active

057968705

ABSTRACT:
An unsharp mask signal Lu, which corresponds to super-low frequency, is calculated from an original image signal Dorg representing an original image. The rate of compression, at which the dynamic range of the original image is compressed, is changed in accordance with the unsharp mask signal Lu. A dynamic range compressing process is carried out with respect to each of picture elements in the original image, with the rate of compression being thus changed for each of the picture elements. The dynamic range compressing process is carried out with Formula (1)

REFERENCES:
patent: 4315318 (1982-02-01), Kato et al.
patent: 4918534 (1990-04-01), Lam et al.
patent: 5319719 (1994-06-01), Nakazawa et al.
patent: 5447811 (1995-09-01), Buhr et al.
patent: 5454044 (1995-09-01), Nakajima
patent: 5493622 (1996-02-01), Tsuchino et al.
Jin et al, "Extraction of Small Calcified Patterns with A Morphology Filter Using A Multiply Structure Element," Jul. 1992, D-II vol. J75-D-II No. 7 pp. 1170-1176 (no place of publication).

Affiliated with

Also associated with

Rating

Method and apparatus for compressing dynamic ranges of images 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 compressing dynamic ranges of images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for compressing dynamic ranges of images will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1123260