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:
Aug. 25, 2015
Filed:
Aug. 08, 2012
Megumi Sakai, Osaka, JP;
Toshihiko Kusakabe, Osaka, JP;
Shinji Kitamura, Kyoto, JP;
Yasuharu Tanaka, Osaka, JP;
Megumi Sakai, Osaka, JP;
Toshihiko Kusakabe, Osaka, JP;
Shinji Kitamura, Kyoto, JP;
Yasuharu Tanaka, Osaka, JP;
Abstract
The image coding method according to the present invention includes the following steps. At a histogram calculation step, a histogram of pixel values included in a block image is calculated. At a plane region detection step, a size of a plane region included in the block image is detected. At an orthogonal transformation size selection step, (i) a first processing size is selected as a processing size of orthogonal transformation for the block image when the histogram is bimodal and the size of the plane region is equal to or greater than the first threshold value, and (ii) a second processing size greater than the first processing size is selected as the processing size, when that the histogram is not bimodal or the size of the plane region is smaller than the first threshold value.