标题：Visualization for Non-Linear Enhanced Volume Data
作者：Yang, Fei; Lu, Weigang; Zhang, Lei; Wang, Kuanquan; Li, Yeming
作者机构：[Yang, Fei] Shandong Univ, Sch Mech Elect & Informat Engn, Weihai, Peoples R China.; [Lu, Weigang] Ocean Univ China, Dept Educ Technol, Qingdao, Peo 更多
会议名称：10th International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP)
会议日期：AUG 27-29, 2014
来源：2014 TENTH INTERNATIONAL CONFERENCE ON INTELLIGENT INFORMATION HIDING AND MULTIMEDIA SIGNAL PROCESSING (IIH-MSP 2014)
关键词：Volume rendering; nonlinear anisotropic filtering; transfer function; 2D; histogram
摘要：There is a strong need for acquisition of high quality volume data sets, with the vision of visualizing organs, engines or other materials for variant fields. Visualized computer model provides interactive investigation and improves understanding of details of substances. Since the quality of volume data which is acquired by CT and MRI devices is impacted by noisy, partial effect and bias seriously, in this paper we first apply non-linear filters in preprocessing stage to improve the quality of 3D volume data, followed by the construction of 2D histogram based on external voxels to design the transfer function. Finally, we use ray-casting algorithm to render volume data. We apply the method presented above to four datasets. The noise is suppressed effectively after denoising with nonlinear anisotropic filtering. Boundary between materials can be differentiated clearly by designing transfer function with 2D histogram constructed based on the pre-processed data.