Image tone interpolation method and apparatus therefor

Details Image tone interpolation method and apparatus therefor Image tone interpolation method and apparatus therefor

1997-06-26

1999-12-07

Lee, Thomas D.

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382269, G06K 900

Patent

active

059996587

ABSTRACT:
All possible image levels of image data are input to tone conversion characteristics, and a tone jump included in the image after tone conversion is detected from the resultant output data. An A-type contour line and a B-type contour line constituting the contours of a target area for tone interpolation are obtained from the multi-tone image. The target area is then detected by checking the inclusive relationship between the A-type and B-type contour lines to extract at least one set of contour lines indicating the contour of the target area. In the target area, an area defined by the A-type contour line and the B-type contour line is divided into (N+1) divided areas, and N intermediate image levels are sequentially allocated to the N divided areas of the (N+1) divided areas.

REFERENCES:
patent: 5020119 (1991-05-01), Tai et al.
patent: 5379350 (1995-01-01), Shimazu
patent: 5454052 (1995-09-01), Kojima
patent: 5625717 (1997-04-01), Hashimoto et al.
"Contour Representation of an Image with Applications" Tetsuo Asano, pp. 14-22.
"A Method of Dominant Point Detection" Ryuzo Takiyama et al., 1993, pp. 15-21.

Affiliated with

Also associated with

Rating

Image tone interpolation method and apparatus therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image tone interpolation method and apparatus therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image tone interpolation method and apparatus therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-833176