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:
May. 18, 2004
Filed:
Feb. 16, 2001
Takao Tsuruoka, Machida, JP;
Kazuhito Horiuchi, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
An image processing apparatus includes a photographing condition estimation unit for estimating a photographing condition of the input image on the basis of photometric information of a photometric evaluation unit and focal information of a focal point detection unit; a Y/C separation unit for separating the input image into a luminance signal and a color difference signal; a luminance correction unit for extracting an edge from the luminance signal and correcting the luminance signal by a gradation conversion curve obtained by weighting depending on the photographing condition; a color difference correction unit for performing correction on the color difference signal on the basis of luminance signals obtained before and after the gradation correction and a theoretical limit characteristic of color reproduction; a skin color correction unit for performing skin color correction or the like depending on the photographing condition; a Y/C synthesis unit for synthesizing the luminance signal and the color difference signal obtained after the correction. The image processing apparatus performs gradation correction on the input image such that appropriate hue and saturation are achieved while emphasizing a main object.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile