Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1997-04-15
2000-05-09
Boudreau, Leo H.
Image analysis
Image transformation or preprocessing
Changing the image coordinates
382293, 708300, G06K 932
Patent
active
060614773
ABSTRACT:
A digital image warper system produces a warped output image from an input image. The warper system increases the sampling rate of a sampled image above the Nyquist rate or samples an analog image at a higher rate than the Nyquist rate and prefilters the upsampled image to counteract filtering which may occur during the warping operation. The upsampled image is warped using an interpolator for resampling to produce a warped upsampled image. The interpolator is, for example, a low quality interpolator such as a bilinear interpolator. The warped image is then down-sampled to the same resolution as the input image to produce the warped image. Down-sampling and warping can be combined into one step by modifying the geometric transformation function implemented when warping the upsampled image.
REFERENCES:
patent: 3700815 (1972-10-01), Doddington et al.
patent: 4816913 (1989-03-01), Harney et al.
patent: 5008752 (1991-04-01), Van Nostrand
patent: 5157481 (1992-10-01), Kashimura et al.
patent: 5173948 (1992-12-01), Blackman et al.
patent: 5175808 (1992-12-01), Sayre
patent: 5204944 (1993-04-01), Wolberg et al.
patent: 5410616 (1995-04-01), Kidd
patent: 5420940 (1995-05-01), Sedlar et al.
patent: 5579418 (1996-11-01), Williams et al.
patent: 5594676 (1997-01-01), Greggain et al.
patent: 5642167 (1997-06-01), Wallace et al.
Sumitomo Metals, "SMI ASSP IP90C16 Image Rotation/Expansion/Reduction Processor (Affine)", 2 pages, Jan. 30, 1996.
Steve Gomez, "Real-time Bilinear Interpolation Using the TMC2301", TRW LSI Products Division, 17 pages, Jan. 21, 1988.
Burt Peter Jeffrey
Lohmeyer Mark S.
van der Wal Gooitzen Siemen
Boudreau Leo H.
Burke William J.
Sarnoff Corporation
Sherali Ishrat
LandOfFree
Quality image warper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quality image warper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quality image warper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1072952