Method of and apparatus for reading out digital image data from

Details Method of and apparatus for reading out digital image data from Method of and apparatus for reading out digital image data from

1994-05-17

1996-10-15

Herndon, Heather R.

G06T 1500

Patent

active

055662790

ABSTRACT:
A three-dimensional image processing apparatus and method wherein a three-dimensional digital image in a three-dimensional memory is cut and read out to perform image processing. Addresses of a two-dimensional digital differential analyzer are first calculated by ray tracing in a direction of a vector on one plane of a three plane coordinate system of a three-dimensional coordinate system, and then data of voxel columns, arranged perpendicularly to the one plane coordinate system in the three-dimensional space along straight lines perpendicular to the ray at the addresses, are read out in units of a column for the individual voxel columns from the three-dimensional memory. A pair of three-dimensional memories are utilized, and a writing operation of a three-dimensional digital image into one of the three-dimensional memories and a reading out operation of the voxel columns from the other three-dimensional memory are performed simultaneously in a parallel relationship.

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