Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2011-03-29
2011-03-29
Kassa, Yosef (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C382S260000, C382S275000, C382S282000, C358S003260, C358S003270, C358S463000
Reexamination Certificate
active
07916968
ABSTRACT:
An adjusting apparatus for enhancing the contrast of an image and a method therefor are provided. The adjusting apparatus includes a mask processor, a brightness detecting unit, a brightness adjusting unit, a ratio calculating unit and a contrast enhancing unit. The mask processor retrieves a pixel matrix from an original image according to its mask dimension, and outputs a specific pixel corresponding to a specific position in the pixel matrix. Then, the brightness detecting unit, the brightness adjusting unit and the ratio calculating unit are coupled in series to process the image according to relations of each sub-pixel of the pixel matrix, so as to obtain an adjusting ratio. Thereby, the contrast enhancing unit multiplies the value of the adjusted specific pixel by the adjusting ratio to enhance the contrast of the image.
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patent: 6625333 (2003-09-01), Wang et al.
patent: 6728401 (2004-04-01), Hardeberg
patent: 6829374 (2004-12-01), Schwartz et al.
Yeong-Taeg Kim, “Contrast Enhancement Using Brightness Preserving Bi-Histogram Equalization” Consumer Electronics by Institute of Electrical and Electronic Engineers (IEEE), 1997, pp. 1-8.
Tien-Chu Hsu et al., “Fuzzy Contrast Correction (FCC) for Image Contrast Enhancement” Society for Information Display (SID), 2006, 3 pages.
Hsu Ching-Fu
Li Jyun-Sian
Lo Shin-Tai
Weng Ruey-Sing
J.C. Patents
Kassa Yosef
Wintek Corporation
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