The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2011
Filed:
Jan. 30, 2007
Applicant:
Kuo-jeng Wang, Kaohsiung, TW;
Inventor:
Kuo-Jeng Wang, Kaohsiung, TW;
Assignee:
Transpacific Systems, LLC, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A shading correction is employed for a scanner to correct shading distortion. However, an image corrected with the shading corrective curve has shading noise lines due to the effects of various factors in the producing process of the shading corrective curve. The characteristic of the shading noise is that the each value of any primary color channel, of each pixel in a line is higher or lower than of the adjacent two pixels in other lines, wherein a color channel is one of red, green, or blue channel Hence, the quality of the image is improved by removing the shading noise detected from the characteristic described above.