Image analysis – Histogram processing – For setting a threshold
Patent
1991-06-17
1994-01-25
Couso, Jose L.
Image analysis
Histogram processing
For setting a threshold
358133, 358433, G06K 936, G06K 946, H04N 712
Patent
active
052822559
ABSTRACT:
An improved method for coding and decoding still or moving visual pattern images by partitioning images into blocks or cubes, respectively, and coding each image separately according to visually significant responses of the human eye. Coding is achieved by calculating and subtracting a mean intensity value from digital numbers within each block or cube and detecting visually perceivable edge locations within the resultant residual sub-image. If a visually perceivable edge is contained within the block or cube, gradient magnitude and orientation at opposing sides of the edge within each edge block or cube are calculated and appropriately coded. If no perceivable edge is contained within the block or cube, the sub-image is coded as a uniform intensity block. Decoding requires receiving coded mean intensity value, gradient magnitude and pattern code, and then decoding a combination of these three indicia to be arranged in an orientation substantially similar to the original digital image or original sequence of digital images. Coding and decoding can be accomplished in a hierarchical pattern. Further, hierarchical processing can be programmably manipulated according to user-defined criteria.
REFERENCES:
patent: 4281312 (1981-07-01), Knudson
patent: 4365273 (1982-12-01), Yamada et al.
patent: 4567518 (1986-01-01), Driessen
patent: 4606069 (1986-08-01), Johnsen
patent: 4668995 (1987-05-01), Chen et al.
patent: 4691329 (1987-09-01), Juri et al.
patent: 4692806 (1987-09-01), Anderson et al.
patent: 4783841 (1988-11-01), Crayson
patent: 4797945 (1989-01-01), Suzuki et al.
patent: 4814871 (1989-03-01), Keesen et al.
patent: 4831659 (1989-05-01), Miyaoka et al.
patent: 4896364 (1990-01-01), Lohscheller
patent: 4947447 (1990-08-01), Miyaoka et al.
patent: 5070532 (1991-12-01), Faul et al.
patent: 5089884 (1992-02-01), Suzuki et al.
patent: 5144688 (1992-09-01), Bovir et al.
Levine, M., "Vision in Man and Machine", McGraw-Hill (1985) pp. 25-57.
Rosenfeld et al., "Digital Picture Processing", Academic Press (1982) pp. 84-112.
Kaufman, "Perception The World Transformed", Oxford University Press (1979) pp. 135-146.
Bovik Alan C.
Chen Dapang
Board of Regents , The University of Texas System
Couso Jose L.
LandOfFree
Method and apparatus for processing both still and moving visual 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 processing both still and moving visual, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for processing both still and moving visual will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-733898