The study of Fourier Volume Rendering and Transfer Function design

• Main Authors: Chang-Chien Cheng, 鄭昌杰
• Other Authors: Yu-Tai Ching
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/75015598952595708374

碩士 === 國立交通大學 === 資訊科學與工程研究所 === 95 === Volume rendering are common visualization methods for medical science and biological science. Traditional methods are not real-time rendering because their high complexity rendering time. The Fourier Volume Rendering that is a real-time method has computational complexity of O(N^2logN) for a volume of size N^3 . But resampling in the frequency domain will causes replicas occur in the spatial domain if we do not use any reconstruction filter. Therefore, the design of an efficient filter is an important study issue in this paper. The classification for Fourier Volume Rendering is the main subject in this paper, too. We used the linear combination property of the Fourier transform to design two classification methods, the image preprocessing and the Bézier curve transfer function, both are accurate classification methods on rendering stage and easy to implement using graphics card in general PC.