Polar-Coordinate Fourier Volume Rendering

• Main Authors: Huai-Che Li, 李懷哲
• Other Authors: Jan-Ray Liao
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/20744232374413003382

碩士 === 國立中興大學 === 電機工程學系所 === 94 === The requirement of high resolution volume visualization is rapidly increasing with the development of modern computer technology. How to handle large volumetric dataset effectively becomes a major problem in volume rendering techniques. Fourier volume rendering (FVR) shows great computational advantages then Ray-casting volume rendering algorithm that suitable for generating projection image of volume dataset interactively. In this work, we present a novel FVR algorithm based on polar coordinate for rendering volume dataset with both high speed and high image quality. Our method processes volumetric spectrum in polar coordinate instead the Cartesian coordinate in traditional FVR algorithm. By this way, the heavy computation can be leaved into pre-processing step and spectrum data can be stored into spectrum-liked data structure. In this paper, we implement both traditional FVR method and our Polar approach for comparison. In our experiment, polar approach can produce high-quality images with high rendering speed.