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:
May. 19, 2009
Filed:
Apr. 17, 2007
Kathrin Berkner, Menlo Park, CA (US);
Ramesh Neelamani, Houston, TX (US);
Edward L. Schwartz, Sunnyvale, CA (US);
Martin Boliek, San Francisco, CA (US);
Kathrin Berkner, Menlo Park, CA (US);
Ramesh Neelamani, Houston, TX (US);
Edward L. Schwartz, Sunnyvale, CA (US);
Martin Boliek, San Francisco, CA (US);
Ricoh Co., Ltd., Tokyo, JP;
Abstract
A method and apparatus is described for segmenting an image, for adaptively scaling an image, and for automatically scaling and cropping an image based on codestream headers data. In one embodiment, a file that can provide a header that contains multi-scale entropy distribution information on blocks of an image is received. For each block, the block is assigned to a scale from a set of scales that maximizes a cost function. The cost function is a product of a total likelihood and a prior. The total likelihood is a product of likelihoods of the blocks. The image is segmented by grouping together blocks that have been assigned equivalent scales. In one embodiment, the file represents an image in JPEG 2000 format.