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. 04, 2009
Filed:
Nov. 02, 2005
Seiichiro Kamata, Nogata, JP;
Seiichiro Kamata, Nogata, JP;
Abstract
An image coding technique capable of realizing a high speed coding processing for a mixed image with less a visual distortion. The image coding apparatus includes: plural scan unitseach having a scan apparatusscanning an original image to be encoded according to a prescribed scan sequence and piecewidth linear approximation apparatusdividing a one-dimensional original image generated by scanning the original image with the scan apparatusinto plural intervals so that an accumulated square error or a dispersion of pixel values in each interval is a prescribed threshold value or less to generate one-dimensional approximation image data obtained by approximation of pixel values by the average value of pixel values in the intervals, which correspond to each of plural scan sequences different from one another; and optimal scan selecting apparatuscomparing the numbers of intervals obtained by dividing of the piecewidth linear approximation apparatusof the scan unitsto thereby select one dimensional approximation image data having a minimum number of intervals.