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Direct volume rendering has been widely used by physicians, scientists, and engineers in a variety of applications. In a direct volume rendering process, transfer functions are used to specify the relationships between volume data values and optical properties in order to reveal inner structures in a volume. However, trial-and-error is one of the widely used approaches for finding good transfer functions...
This paper reports on the remote use of MIMD parallel machines for compute-intensive visualisation tasks. As an alternative to dedicated rendering hardware, a system using conventional desktop machines connected to a visualisation server permits sharing of the resource between several users, and/or sites. The design of a parallel rendering system should consider not only how to achieve efficient...
A direct display method for volumes that are represented in trivariate parametric form is described. Functions defined for the freeform volume drive independently modifiable transfer functions of colour, intensity, and opacity. The functions may be designed or they may be derived from data.A forward mapping display algorithm accommodates both the freeform geometry and solution of the line-of-sight...
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