| 基于Shear-Warp的预合成体绘制方法 |
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| 引用本文： | 李彬,田联房,陈萍,毛宗源.基于Shear-Warp的预合成体绘制方法[J].华南理工大学学报(自然科学版),2007,35(5):30-34. |
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| 作者姓名： | 李彬 田联房 陈萍 毛宗源 |
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| 作者单位： | 1. 华南理工大学,自动化科学与工程学院,广东,广州,510640
2. 广州医学院第一附属医院,核医学科,广东,广州,510120 |
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| 基金项目： | 国家自然科学基金资助项目(30570458)，广东省自然科学基金资助项目(05006530)，广州市番禺区科技攻关项目(2005-Z-55-1) |
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| 摘 要： | 为提高用Shear-Warp重建的三维医学图像的质量,提出了一种改进的基于Shear-Warp的预合成体绘制算法IPVR.该算法采用预合成体绘制技术,在重采样过程中,结合体绘制方程和光照模型,确定最终的重采样值并合成中间图像,从而消除标准Shear-Warp算法中因欠采样而产生的混淆现象.实验证明该方法满足实时体绘制要求,显示效果较好.
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| 关 键 词： | 预合成体绘制 Shear-Warp 光学模型 光照模型 |
| 文章编号： | 1000-565X（2007）05-0030-05 |
| 修稿时间： | 2006-06-13 |
Pre-Integrated Volume Rendering Based on Shear-Warp |
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| Li Bin,Tian Lian-fang,Chen Ping,Mao Zong-yuan.Pre-Integrated Volume Rendering Based on Shear-Warp[J].Journal of South China University of Technology(Natural Science Edition),2007,35(5):30-34. |
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| Authors: | Li Bin Tian Lian-fang Chen Ping Mao Zong-yuan |
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| Institution: | 1. School of Automation Science and Engineering, South China Univ. of Tech. , Guangzhou 510640, Guangdong, China; 2. Dept. of Nuclear Medicine, the First Affiliated Hospital of Guangzhou Medical College, Guangzhou 510120, Guangdong, China |
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| Abstract: | In order to improve the quality of the 3D medical image reconstructed via Shear-Warp,an improved pre-integrated volume rendering(IPVR) algorithm based on Shear-Warp is proposed,in which the volume rendering equation and the light model are adopted to determine the final re-sampling value and to construct an intermediate image.Thus,the aliasing artifacts resulting from the under-sampling in the standard Shear-Warp algorithm can be avoided by the pre-integrated volume rendering technology.Experimental results demonstrate that the proposed method meets the requirement of real-time volume rendering with good display performance. |
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| Keywords: | pre-integrated volume rendering Shear-Warp optical model light model |
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