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.:

US 8154628 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 10, 2012

Filed:

Aug. 14, 2007
Applicants:

Kozo Ishida, Tokyo, JP;

Tetsuya Kuno, Tokyo, JP;

Takashi Itow, Tokyo, JP;

Shotaro Moriya, Tokyo, JP;

Inventors:

Kozo Ishida, Tokyo, JP;

Tetsuya Kuno, Tokyo, JP;

Takashi Itow, Tokyo, JP;

Shotaro Moriya, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/217 (2006.01); H04N 3/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

An image processing apparatus () that corrects an input image signal (Xin) pixel by pixel to generate a corrected image signal (Xout), having a filtering means () that determines a luminance distribution of a pixel to be corrected and pixels neighboring the pixel to be corrected, a correction gain calculation means () that determines the correction gain of the pixel to be corrected, and an operation means () that uses the correction gain determined by the correction gain calculation means to perform an operation on the input image signal pixel by pixel. With this simple configuration, the dynamic range of the input image can be appropriately improved.


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