Orthographic projection and back projection methods for body to be measured based on general image display card
Title：
Orthographic projection and back projection methods for body to be measured based on general image display card
Application Number：
 200610012090
Application Date：
 2006/06/02
Announcement Date：
 2007/02/21
Pub. Date：
Publication Number：
 1916965
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G06T 11/00
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Lu Wenkai, Zhang Lei
Key Words：
 Orthographic projection, back projection, image display card
Abstract：
 A positive and negative projection method of object to be tested based on universal pattern display card includes using 3D texture to present rebuilt body data of object to be tested, calculating out directional vector array of ray outgoing point to detectors, storing said vector array into pattern display card to form directional vector texture, rotating directional vector texture and directional vector around rotary shaft to realize once of positive projection course on any projective angle, using 3D texture index technique to let virtual slab set position be not limited any more in negative projection course.
Claim：
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PCT：
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