Computationally efficient noise reduction filter

Details Computationally efficient noise reduction filter Computationally efficient noise reduction filter

2007-04-17

2007-04-17

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003270, C382S260000, C382S275000

Reexamination Certificate

active

09990031

ABSTRACT:
A technique for reducing noise in pixel images includes shrinking initial image data, and processing the shrunken image with known segmentation-based filtering techniques which identify and differentially process structures within the image. After processing, the shrunken image is enlarged to the dimensions of the initial data, subsequently processed if necessary and the final image is displayed or analyzed. The resulting technique is versatile and provides greatly improved computational efficiency while maintaining image quality and robustness.

REFERENCES:
patent: 5710842 (1998-01-01), Lee
patent: 5978518 (1999-11-01), Oliyide et al.
patent: 6173083 (2001-01-01), Avinash
patent: 6208763 (2001-03-01), Avinash
patent: 6757442 (2004-06-01), Avinash
patent: 6963670 (2005-11-01), Avinash et al.

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