User adjustable image enhancement filtering

Details User adjustable image enhancement filtering User adjustable image enhancement filtering

2003-12-18

2009-12-22

Bali, Vikkram (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

Reexamination Certificate

active

07636488

ABSTRACT:
In an image enhancement method, computer program product, and system a set of boundary frequencies within a frequency spectrum are defined. The boundary frequencies divide the spectrum into a plurality of different spatial frequency regions. A digital image is then processed with a filter having a plurality of functions. Each function is exclusive to one of the spatial frequency regions. The functions of adjoining regions have equal values at respective boundary frequencies. A set of peak and or valley filter values of the functions at the respective boundary frequencies can be defined.

REFERENCES:
patent: 2003/0067982 (2003-04-01), Sheraizin et al.
patent: 2005/0213840 (2005-09-01), Chen
Rafael C. Gonzalez Digital Image Processing, Nov. 9, 2001, Prentice Hall, 2/E, pp. 5,29,175,177,183,184,246,247,354,359,361,384,381,397.

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