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:
Jan. 16, 2007
Filed:
Mar. 29, 2002
Masayuki Takahira, Kanagawa, JP;
Masayuki Takahira, Kanagawa, JP;
Fuji Photo Film,Co, Ltd., Kanagawa, JP;
Abstract
An image processing method and apparatus enhancing sharpness of an image while suppressing enhancement of noise components. Image data is separated into frequency components, and an evaluation value for evaluating the level of an image to be enhanced is calculated for each pixel. A gain for an intermediate/high frequency component is set in accordance with the evaluation value, and multiplied by the intermediate/high frequency component, and the frequency components are synthesized. Test images, each having a density which is different from the other but constant over the test image, are prepared and an evaluation value is obtained from each of the test images as an evaluation correction value. The evaluation value of the image for processing is corrected by subtracting the evaluation correction value corresponding to the density of each pixel from the evaluation value of the image data to be processed for each pixel.