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. 07, 2001
Filed:
Feb. 06, 1998
Setsuya Kobayashi, Nara, JP;
Takeshi Murakami, Hirakata, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention is directed to an image processing device which is capable of discriminating the classification of a particular area of an image at improved accuracy. In an image processing device according to the present invention, an image input from an image signal input portion is processed in the following steps: a vertical and horizontal complexity calculating circuit determines absolute values Tx and Ty of differential densities between pixels neighboring to each other in vertical and horizontal directions, respectively, within a particular area of the image; a diagonal complexity calculating circuit determines absolute values Rx and Ry of differential densities of pixels neighboring to each other in main diagonal and sub diagonal directions, respectively, within the particular area; a comparator circuit compares sums of absolute values in respective directions and outputs a least sum as a complexity to an area discriminating portion; a difference-comparator portion determines a difference between a maximal value Ma and a least value Mi of densities of pixels of the image data and outputs it as a comparison difference value to the area discriminating portion; and the area discriminating portion discriminates the classification of the image area based on the above-mentioned complexity value and comparison difference value.