Image analysis – Image transformation or preprocessing – Changing the image coordinates
Reexamination Certificate
2004-08-20
2008-05-27
Mehta, Bhavesh M. (Department: 2624)
Image analysis
Image transformation or preprocessing
Changing the image coordinates
C382S266000, C382S298000, C382S299000, C345S611000, C345S660000
Reexamination Certificate
active
07379626
ABSTRACT:
An edge adaptive system and method for image filtering. The method maps each output pixel onto input image coordinates and then prefilters and resamples the input image pixels around this point to reduce noise and adjust the scale corresponding to a particular operation. Then the edge in the input image is detected based on local and average signal variances in the input pixels. According to the edge detection parameters, including orientation, anisotropy and variance strength, the method determines a footprint and frequency response for the interpolation of the output pixel. In a more particular implementation, the method divides the input pixel space into a finite number of directions called skews, and estimates the edge orientation with the nearest skew direction. This further facilitates pixels inclusion in the interpolation of the output pixel.
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Battiato, S., G. Gallo, and F. Stanco. “Smart Interpolation by Anisotropic Diffusion.” 12th International Conference on Image Analysis and Processing (ICIAP′03) (2003): 572.
The following two notices (1) & (2) are PCT notices in the corresponding PCT Application No. PCT/US04/27083.
(1) International Search Report.
(2) Written Opinion of the International Searching Authority.
Lachine Vladimir
Lee Louie
Smith Gregory Lionel
Mehta Bhavesh M.
Newman Michael A
Silicon Optix Inc.
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