Balancing areas of varying density in a digital image

Details Balancing areas of varying density in a digital image Balancing areas of varying density in a digital image

2006-08-15

2006-08-15

Shah, Sanjiv (Department: 2624)

Image analysis

Image enhancement or restoration

Intensity, brightness, contrast, or shading correction

C382S276000

Reexamination Certificate

active

07092581

ABSTRACT:
A method for balancing areas of varying density within a digital image, and a computer readable storage medium encoded with the method comprise determining a pixel enhanced intensity value by dividing a pixel unequalized intensity value by a pixel mask intensity value, then scaling the dividend by an exposure compensation factor. The unequalized intensity value is from an unequalized digital image recorded by a digital imaging device. The pixel mask intensity value is proportional to the pixel's blurred intensity value. The exposure compensation factor is selectable by the user and is typically selected as the mean blurred intensity of the pixels.

REFERENCES:
patent: 5083160 (1992-01-01), Suzuki et al.
patent: 5298943 (1994-03-01), Ide et al.
patent: 6219076 (2001-04-01), Sato
patent: 6650849 (2003-11-01), Shimura
patent: 6757444 (2004-06-01), Matsugu et al.

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