Object-order template-based approach for stereoscopic volume rendering
✍ Scribed by Koo, Yun-Mo ;Lee, Cheol-Hi ;Shin, Yeong-Gil
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 663 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1049-8907
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✦ Synopsis
Stereoscopic volume rendering provides powerful depth information, but it takes a long time to render two-eye images. Previous algorithms based on reprojection methods project the result of one view of a stereo pair into the other instead of rendering a new one completely. Because of inaccurate mapping between the two images, the quality of the reprojected image is not satisfactory. This paper presents a new algorithm to preserve the accuracy of both images with very little increase in computation time. The efficiency of the new algorithm comes from the use of ray templates and object-order processing. This algorithm makes two different templates for each eye and renders two images simultaneously, tracing the volume only once in object order. We also extend the algorithm to support image-space supersampling by using more ray templates. Experimental results show that the image quality of the new algorithm is not only comparable with that of ray casting but also the rendering speed is near that of the interactive shear-warp algorithm employing object-order processing and spatial data coherency.