3D projection method

Details 3D projection method 3D projection method

2005-05-24

2005-05-24

Bruce, David V (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Tomography

C378S021000

Reexamination Certificate

active

06898266

ABSTRACT:
A digitized tomosynthesis method for projecting a 3D volumetric image of an object onto a virtual projection plane that comprises an alpha blend plane subdivided into a rectangular array of pixel cells. A ray of energy defines a trace representing a virtual sight path ray passing from a view point through one pixel cell of the alpha blend plane to define a view level image, wherein a 3D volumetric image of the object is projected by computing the coordinate of an object voxel referenced to the image plane, computing the image plane intercept of the ray of energy from the source through the object voxel, and forming a plurality of successively selected view level image planes at the alpha blend plane.

REFERENCES:
patent: 5051904 (1991-09-01), Griffith
patent: 5070454 (1991-12-01), Griffith
patent: 5319550 (1994-06-01), Griffith
patent: 6002739 (1999-12-01), Heumann
patent: 6724856 (2004-04-01), De Man et al.

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