Apparatus and method for the visualization of a three-dimensiona

Details Apparatus and method for the visualization of a three-dimensiona Apparatus and method for the visualization of a three-dimensiona

1994-02-15

1996-10-15

Zimmerman, Mark K.

G06T 1700

Patent

active

055662820

ABSTRACT:
An arrangement and a method for maximum intensity projection of a three-dimensional scene on a two dimensional display (11), via the calculation of first or higher-order interpolated values of points (P.sub.1, . . . , P.sub.m) along rays (61) casted through a voxel representation (50) of said scene avoids unnecessary interpolation operations by, firstly, determining an estimated minimum value for each ray (61) under consideration and for each sample point (P.sub.k) an estimated maximum value for the interpolated value. Only if the estimated maximum value for a point exceeds the estimated minimum value for the ray (61), an interpolation is required. Both estimated extremes are obtained by comparing the values contributing to the interpolations, the estimated minimum value by an analog procedure or by reference to a neighboring ray.

REFERENCES:
patent: 5125015 (1992-06-01), Shimoni
patent: 5313567 (1994-05-01), Civanlar et al.
patent: 5331552 (1994-07-01), Lloyd et al.
patent: 5361385 (1994-11-01), Bakalash

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