Image processing apparatus and method

Details Image processing apparatus and method Image processing apparatus and method

2007-07-25

2009-12-01

Bali, Vikkram (Department: 2624)

Image analysis

Histogram processing

C382S240000, C382S226000, C382S254000, C382S274000, C375S240180, C375S240010

Reexamination Certificate

active

07627169

ABSTRACT:
Processing for improving the contrast of an image of interest is executed by an image processing circuit in an X-ray photography apparatus. The image is decomposed into coefficient values of a plurality of frequency bands by a frequency-component decomposition circuit to obtain coefficients of each and every frequency band. A coefficient conversion circuit converts coefficient values with regard to at least one frequency band of the plurality of frequency bands in such a manner that a frequency distribution of coefficient values of every frequency band will become a prescribed frequency distribution. A restoration circuit generates an image using the coefficient values obtained by the conversion performed by the coefficient conversion circuit.

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