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:
Sep. 06, 2011
Filed:
Sep. 27, 2007
Kazuhiko Matsumoto, Tokyo, JP;
Kazuhiko Matsumoto, Tokyo, JP;
Ziosoft, Inc., Tokyo, JP;
Abstract
This invention provides an image processing method for projecting a virtual ray onto volume data to create an image and making it possible to realize speeding up without performing preprocessing. A virtual rayis projected from an eye O onto an object, a position P at which the remaining light amount of the virtual rayfirst attenuates is acquired, and a traveling distance d of the virtual rayat the position P is acquired. To project an adjacent virtual ray, the virtual rayis projected from a position Ooffset distance Δd smaller than the traveling distance d from the eye O by a predetermined value. Thus, when projection processing is performed, depth information d of the position P at which a first object is acquired on the virtual ray is stored and an adjacent virtual ray is projected from the position Ooffset Δd slightly smaller than the depth d, thereby skipping calculation.