Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1996-01-16
1997-03-11
Couso, Jose L.
Image analysis
Image transformation or preprocessing
Changing the image coordinates
382293, G06K 932
Patent
active
056110006
ABSTRACT:
The light intensity values of a first and second image are stored in a memory as pixels. A transformation from the second image to a derived image is perforated by a spline function in cooperation with a spline control grid. The spline control grid has a plurality of control vertices at predetermined locations with respect to the pixels of the second image. The transformation adjusts the light intensity values proportional to the distance between the control vertices and the pixels of the second image. The first image is compared with the derived image. The difference between the first image and the derived image is determined. The control vertices of the control grid are iteratively displaced until the difference between the first and derived image is less than a desired amount. The final coordinates of the control vertices parametrize the motion field of the first and second image.
REFERENCES:
patent: 4644582 (1987-02-01), Morishita et al.
patent: 5048103 (1991-09-01), Leclerc et al.
patent: 5067015 (1991-11-01), Combridge et al.
patent: 5251271 (1993-10-01), Fling
J. L. Barron, et al, "Performance of Optical Flow Techniques, Robotics and Perception Laboratory", Queen's University, Jul. 1992 (Revised Jul. 1993).
B. K. P. Horn, "Motion Field & Optical Flow", Robot Vision, The MIT Press, 1986, pp. 278-298.
R. Bajcsy, et al, "Matching of Deformed Images", IEEE Computer Society, Catalog No. 83CH1801-0, 1982, pp. 251-353.
J. R. Bergen, et al, "Hierarchical Model-Based Motion Estimation", Second European Conference on Computer Vision, May 1992, pp. 237-252.
R. Bajcsy, et al, "Multiresolution Elastic Matching", Computer Vision, Graphics, and Image Processing, 1989, vol. 46, pp. 1-21.
Goshtasby, Ardeshir, "Registration of Images with Geometric Distortions", IEEE, 1988, pp. 60-64.
Sinha, Sarvajit et al., "A Two-Stage Algorithm for Discontinuity Preserving Surface Reconstruction", IEEE, 1992, pp. 36-55.
Coughlan James M.
Szeliski Richard S.
Bella Matthew C.
Brinkman Dirk
Couso Jose L.
Digital Equipment Corporation
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