Method and apparatus for performing tone conversion

Details Method and apparatus for performing tone conversion Method and apparatus for performing tone conversion

1996-06-24

1998-03-17

Johns, Andrew

Image analysis

Image enhancement or restoration

Intensity, brightness, contrast, or shading correction

358455, G06K 940

Patent

active

057296367

ABSTRACT:
An image processing method and apparatus for performing tone conversion on input image data X to produce converted data Y set a functional formula including at least two of a first-order term of the input image data X, a third-order term of the input image data X, and a fraction term of the input image data X. Alternatively, the function formula includes at least two of a second-order term of the input image data X, a third-order term of the input image data X, and a fraction term of the input image data X. Then, the converted data Y is output in accordance with the functional formula.

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