Signal processing method for producing interpolated signal...

Details Signal processing method for producing interpolated signal... Signal processing method for producing interpolated signal...

2006-11-21

2006-11-21

Sherali, Ishrat (Department: 2624)

Image analysis

Image transformation or preprocessing

Changing the image coordinates

C382S250000

Reexamination Certificate

active

07139443

ABSTRACT:
A method for producing interpolated signal values between sampled signal values in a sampled image signal produced by a checkerboard sampling pattern is accomplished by extracting a block of 2N-by-2N signal values that correspond to a block of sampling locations of the checkerboard sampling pattern, providing a set of frequency coefficients by a discrete cosine transform with the block of 2N-by-2N signal values, and providing at least a interpolated signal value that corresponds to the interpolation location by an inverse discrete cosine transform with the set of frequency coefficients. Here, a block of 2N-by-2N signal values is extracted so that sampled signal values exist in all the pixel locations of the block.

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