Image analysis – Image enhancement or restoration
Reexamination Certificate
2007-03-22
2008-11-04
Azarian, Seyed (Department: 2624)
Image analysis
Image enhancement or restoration
C382S274000, C369S013560
Reexamination Certificate
active
07447376
ABSTRACT:
There are provided an image processing apparatus and method. In this apparatus and method, high-frequency components are converted by multiple-frequency transformation in accordance with tone conversion used to change the dynamic range, thereby obtaining a high-quality image. For example, an original image undergoes tone conversion on the basis of a tone conversion curve, and the converted image then undergoes discrete wavelet transformation. After that, subbands obtained by discrete wavelet transformation undergo a conversion process in correspondence with the slope of the tone conversion curve.
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Azarian Seyed
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
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