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:
Dec. 03, 2013
Filed:
Jul. 08, 2009
Sami Niemi, Skanor, SE;
Martin Jacobsson, Lund, SE;
Sami Niemi, Skanor, SE;
Martin Jacobsson, Lund, SE;
Mobile Imaging in Sweden AB, Lund, SE;
Abstract
There is provided a method for compressing images and an image format. The method comprises performing a transform on pixel portions of image data and evaluating resulting coefficients from each transform in terms of a flatness condition. If the transform is found to be flat then the result from the transform is quantized according to a first quantizing scheme. If the transform is found not to be flat then the result from the transform is quantized according to a second quantizing scheme being different from the first quantizing scheme. Different block arranging schemes are proposed for the quantizing schemes. An indicator is stored in the block indicating that the image block is flat or not flat. The resulting bits are written into a compression data structure.