Direct rendering of freeform volumes

✍ Scribed by Y-K Chang; AP Rockwood; Q He

• Book ID: 103044760
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 794 KB
• Volume: 27
• Category: Article
• ISSN: 0010-4485
• DOI: 10.1016/0010-4485(94)00006-y

✦ Synopsis

A direct display method for volumes that are represented in trivariate parametric form is described. Functions defied 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 integral for direct rendering without the necessity for intermediate resampling. Geometric methods are developed to avoid expensive volume buffers and accommodate the volume warp.

The method is suitable for parallel distribution, which occurs at several levels. This is implemented on a massively parallel SIMD machine, the MASPAR.