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IsoContour Volume Rendering Program of Computer Graphics
 

Summary: Iso­Contour Volume Rendering
James Arvo
Program of Computer Graphics
Cornell University 1
Kevin Novins
Laboratoire iMAGIS
Institut IMAG 2
Abstract
In this paperwe present a newapproachto volume rendering in which
curves of constant intensity in image space, or iso­contours, are com­
puted directly for eachview. The generatediso­contours canbe used
to drive various visualization and feature­detection algorithms. The
approachimposesno restriction on the organization of the data points
andcanaccommodatea large class of radially­symmetric filter func­
tions. The technique works well for both perspective and ortho­
graphic viewing projections. Each iso­contour is definedby an ordi­
nary differential equation, which is solved numerically using a pre­
dictor­corrector method. A key element of the algorithm is the use
of image intensity gradients, which we computeby means of a closed­
form expression that holds at every point on the image plane. A

  

Source: Arvo, Jim - Departments of Information and Computer Science & Electrical and Computer Engineering, University of California, Irvine

 

Collections: Computer Technologies and Information Sciences