Image analysis – Image enhancement or restoration – Artifact removal or suppression
Reexamination Certificate
2006-05-30
2006-05-30
Ahmed, Samir (Department: 2625)
Image analysis
Image enhancement or restoration
Artifact removal or suppression
C382S260000, C358S003260, C358S003270
Reexamination Certificate
active
07054503
ABSTRACT:
In the present invention, 2N pixels (having signal levels V1through V8), including a boundary pixel, that consist of N pixels on each side of a boundary and run orthogonally to the boundary are referenced to determine whether correction should be performed or not. If it is determined that the correction should be performed, the boundary pixel and M pixels on each side of the boundary pixel are used to perform the correction. In an image processing system for performing filtering on pixels belonging to a block, which is a unit of discrete cosine transform in image compression, the maximum value of differences between neighboring pixels in at least half, including a pixel of interest, of all the pixels composing a block to be processed is obtained. Differences between neighboring pixels in 2N pixels, including the pixel of interest, that run orthogonally to the boundary between blocks and consist of N pixels on each side of the boundary are calculated. The differences calculated are compared with a threshold corresponding to the maximum value to determine whether filtering should be performed. If it is determined that filtering should be performed, the pixel of interest and M pixels on each side of the pixel of interest are used to perform filtering. N is a positive integer and M is a positive integer smaller than N.
REFERENCES:
patent: 6188799 (2001-02-01), Tan et al.
patent: 6240135 (2001-05-01), Kim
patent: A 3-46482 (1991-02-01), None
patent: A 11-098505 (1999-04-01), None
patent: A 2001-160970 (2001-06-01), None
Ahmed Samir
Kassa Yosef
Seiko Epson Corporation
LandOfFree
Image processing system, image processing method, and image... 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 processing system, image processing method, and image..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing system, image processing method, and image... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3531437