Image analysis – Image transformation or preprocessing
Reexamination Certificate
2005-09-14
2009-10-06
Couso, Yon (Department: 2624)
Image analysis
Image transformation or preprocessing
C382S167000
Reexamination Certificate
active
07599578
ABSTRACT:
A tone transformation apparatus of the present invention extracts or generates a signal Z[i, j] according to a pixel value of a pixel [i. j] of an original image or a pixel value of its immediate neighborhood. Further, it extracts or generates a signal ZL[i, j] according to a pixel value of a neighborhood area of the pixel [i, j]. A transformation gain k for the pixel [i. j] is determined according to these signals Z, ZL. For the tone transformation, a color component or the like of the pixel [i, j] is multiplied by the transformation gain k for the pixel [i. j].
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Couso Yon
Nikon Corporation
Oliff & Berridg,e PLC
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