Enhancing the tonal and spatial characteristics of digital...

Details Enhancing the tonal and spatial characteristics of digital... Enhancing the tonal and spatial characteristics of digital...

2006-10-03

2006-10-03

Ahmed, Samir (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C382S165000, C382S166000, C382S274000, C382S275000, C358S001200, C358S003260, C358S003270

Reexamination Certificate

active

07116838

ABSTRACT:
A method of enhancing the tonal and spatial characteristics of a digital image, includes receiving a source digital image including a plurality of pixels; producing a tone scale function that can be used to enhance the tonal characteristics of the source digital image; classifying the tone scale function into one of two or more categories, wherein the classification categories include expansive and compressive; and using the tone scale function, the source digital image, and a first spatial filter to produce an enhanced digital image when the tone scale function has been classified as compressive, and using the tone scale function, the source digital image, and a second spatial filter to produce an enhanced digital image when the tone scale function has been classified as expansive.

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