Image analysis – Image transformation or preprocessing – Correlation
Patent
1996-12-18
1998-11-10
Couso, Jose L.
Image analysis
Image transformation or preprocessing
Correlation
382279, 382284, 382296, 382298, G06K 964
Patent
active
058356398
ABSTRACT:
A method for detecting an amount of rotation or magnification in a modified image, includes the steps of: embedding a marker image having a pair of identical features separated by a distance d and oriented at an angle .alpha. in an original image to produce a marked image, the marked image having been rotated and/or magnified to produce the modified image; performing an autocorrelation on the modified image to produce a pair of autocorrelation peaks corresponding to the location of the features of the marker image in the modified image; and comparing the separation d' and orientation .alpha.' of the autocorrelation peaks with the separation d and orientation .alpha. of the features in the marker image to determine the amount of rotation and magnification in the modified image.
REFERENCES:
patent: 4435835 (1984-03-01), Sakow et al.
patent: 4602286 (1986-07-01), Kellar et al.
patent: 4759076 (1988-07-01), Tanaka et al.
patent: 5185815 (1993-02-01), Brandstetter
patent: 5225915 (1993-07-01), Ciccone et al.
patent: 5392361 (1995-02-01), Imaizumi et al.
patent: 5517319 (1996-05-01), Arai
patent: 5535007 (1996-07-01), Kim
patent: 5604819 (1997-02-01), Barnard
Daly Scott J.
Honsinger Chris W.
Close Thomas H.
Couso Jose L.
Eastman Kodak Company
Patel Kanji
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