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. 06, 2012
Filed:
May. 24, 2006
Sei Koh, Tokyo, JP;
Sei Koh, Tokyo, JP;
Abstract
An object of the invention is to adequately remove a halo in an image processing method and apparatus for conversion of an image into an image suitable for image recording and displaying by compression of the dynamic range of the image. As means for solution, an image processing method that compresses the dynamic range of image data includes: an input process of inputting image data; a low frequency component calculation process of calculating, for each pixel, a low frequency component of image data inputted through the input process; an image processing process of calculating an image-processed value for each pixel, according to the below-described equation; and an output process of outputting image data including the image-processed value calculated by the image processing process. Snp=a1·Snus+a2·(Snf−Snus), wherein Snp represents an image-processed value; a1 and a2 are represent factors (0<a1<1 and 0<a2<1); Snus represents a low frequency component, of each pixel, calculated through the low frequency component calculation process; and Snf represents an image data value, of each pixel, inputted through the input process.