CASIA OpenIR  > 中国科学院分子影像重点实验室
Ray feature analysis for volume rendering
Yang, Fei2; Yang, Feng1; Li, Xiuli2; Tian, Jie2
AbstractA major difficulty of volume rendering has been the recognition of different semantic regions which is crucial for the appropriate assignment of optical properties. Such difficulty arises from the fact that different semantic regions may share the same input value ranges. In this paper, we introduce the concept of ray-feature analysis and propose an on-the-fly state transition framework for the recognition of different semantic regions during volume rendering without the need of explicit segmentation information. In this framework, we consider the value along the path of a ray as a 1D-signal, and by making use of the feature analysis of these 1D-signals, semantic information of the current ray sample is extracted. To define the condition of state transition, we propose a method called "threshold based state transition". Since the parameters of the threshold based state transition method is not intuitive, an automatic learning method which enables an interactive user labeling routine is proposed. Experimental results show that our proposed framework is cost effective for on-the-fly semantic region recognition, and is especially suitable for closed, mostly convex, multi-layered objects.
KeywordDirect Volume Rendering Classification Ray Feature Analysis Localized Transfer Function Threshold Based State Transition
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Information Systems ; Computer Science, Software Engineering ; Computer Science, Theory & Methods ; Engineering, Electrical & Electronic
WOS IDWOS:000360377200010
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Document Type期刊论文
Corresponding AuthorTian, Jie
Affiliation1.Beijing JiaoTong Univ, Sch Comp & Informat Technol, Beijing 100044, Peoples R China
2.Chinese Acad Sci, Inst Automat, Key Lab Mol Imaging, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Yang, Fei,Yang, Feng,Li, Xiuli,et al. Ray feature analysis for volume rendering[J]. MULTIMEDIA TOOLS AND APPLICATIONS,2015,74(18):7621-7641.
APA Yang, Fei,Yang, Feng,Li, Xiuli,&Tian, Jie.(2015).Ray feature analysis for volume rendering.MULTIMEDIA TOOLS AND APPLICATIONS,74(18),7621-7641.
MLA Yang, Fei,et al."Ray feature analysis for volume rendering".MULTIMEDIA TOOLS AND APPLICATIONS 74.18(2015):7621-7641.
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