Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2006-12-12
2010-10-05
Patel, Kanji (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C358S003270
Reexamination Certificate
active
07809210
ABSTRACT:
Systems and methods are provided that facilitate grey level magnification to improve details and contrast for a dark scene of video on a digital display system. Preferably implemented over a limited pixel level range, the video enhancement process counts the number of pixels corresponding to each level within the range in a frame and then, based on the percent level distribution of the pixels, calculates the stack of percentage distribution. From the stack of percentage distribution, a transformation process is performed to reassign the pixel values over a dark level range and to expand the distribution of the pixels. The result of transformation enhances the details and contrast of the dark area significantly without affecting the bright scene. By only applying the algorithm to dark scenes, computation loads are reduced compared with some of the full picture processing methods. Lower computational loads are important to reduce motion artifacts in high speed video applications.
REFERENCES:
patent: 5184183 (1993-02-01), Karidis et al.
patent: 5389506 (1995-02-01), Sutton
patent: 7404645 (2008-07-01), Margulis
patent: 7508993 (2009-03-01), Yuan et al.
patent: 2007/0035706 (2007-02-01), Margulis
patent: 2007/0172145 (2007-07-01), Altunbasak et al.
Mitsubishi Digital Electronics America Inc.
Orrick Herrington & Sutcliffe LLP
Patel Kanji
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