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:
Jun. 17, 2003
Filed:
Jan. 21, 1998
George Politis, New South Wales, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A convolution operator is applied to an input image to produce an output image. Image pixel data corresponding to at least a predetermined number of scan lines of the input image is provided to a buffer memory adapted to store a portion of the image. The image data may be provided from a source of such data, or alternatively it may be rendered from an object graphics environment. A finite convolution mask is applied to the image pixel data to produce a scan line of the output image. The finite convolution mask has a plurality of coefficients arranged in a predetermined number of rows and a predetermined number of columns, and the predetermined number of scan lines substantially equals at least one of the number of rows or the number of columns of the convolution mask. In a preferred implementation, a scan line of the input image is discarded and a next scan line is provided for each scan line of the output image produced by the convolution.