Image resolution conversion with error detection

Details Image resolution conversion with error detection Image resolution conversion with error detection

2011-05-31

2011-05-31

Wu, Jingge (Department: 2624)

Image analysis

Image transformation or preprocessing

Changing the image coordinates

C382S298000

Reexamination Certificate

active

07953296

ABSTRACT:
This invention detects an area where image quality greatly changes upon resolution conversion. For this purpose, a block segmentation unit extracts a tile having Tw×Th pixels from a buffer, and stores the tile in a tile buffer. A two-colors ratio calculating unit counts the number of times the number of colors included in a surrounding pixel group positioned near a pixel of interest becomes two during raster scanning of the tile buffer, and calculates a two-colors ratio Cr. A continuous pixel ratio calculating unit calculates, as a run ratio Rr, a ratio at which pixels having the same color continue during scanning of the tile buffer. A difference calculating unit calculates a resolution conversion error Dt when an image of the tile is converted to ½ the resolution. A determination unit determines based on Cr, Rr, and Dt whether a tile of interest is suitable for resolution conversion.

REFERENCES:
patent: 5412428 (1995-05-01), Tahara
patent: 6078617 (2000-06-01), Nakagawa et al.
patent: 6144775 (2000-11-01), Williams et al.
patent: 6427030 (2002-07-01), Williams et al.
patent: 6983019 (2006-01-01), Yiwen et al.
patent: 2002/0133815 (2002-09-01), Mizutome et al.
patent: 2004/0095316 (2004-05-01), Shibamiya et al.
patent: 2000-125132 (2000-04-01), None
patent: 2002-232709 (2002-08-01), None

Affiliated with

Also associated with

Rating

Image resolution conversion with error detection 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 resolution conversion with error detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image resolution conversion with error detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2678897