| 采用高斯迭代滤波的等值面折射体绘制 |
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| 引用本文： | 朱懿敏,张文利.采用高斯迭代滤波的等值面折射体绘制[J].科技广场,2011(9):56-58. |
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| 作者姓名： | 朱懿敏 张文利 |
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| 作者单位： | 1. 江西中医学院计算机学院,江西南昌,330000
2. 华南农业大学珠江学院,广东广州,510900 |
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| 摘 要： | 体绘制增加折射光学效果,能够明显地增强三维空间层次关系,但折射体绘制对原始数据的噪声非常敏感。在本文中我们提出了一种基于高斯迭代滤波的折射体绘制方法。首先在数据预处理阶段对CT数据进行高斯迭代滤波,然后采用阈值法把CT数据分割为不同区域,通过折射率传递函数映射为不同的折射率,最后根据Shell定理对体数据进行折射体绘制。结果显示绘制质量得到了显著提高。
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| 关 键 词： | 折射体绘制 高斯滤波 等值面 |
Refractive Volume Rendering of Iso-surfaces Using Iterative Gaussian Filter |
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| Zhu Yimin Zhang Wenli.Refractive Volume Rendering of Iso-surfaces Using Iterative Gaussian Filter[J].Science Mosaic,2011(9):56-58. |
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| Authors: | Zhu Yimin Zhang Wenli |
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| Institution: | Zhu Yimin Zhang Wenli(1.School of Computer,Jiangxi University of Traditional Chinese Medicine,Jiangxi Nanchang 330000;2.Zhujiang College,South China Agricultural University,Guangdong Guangzhou 510900) |
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| Abstract: | The addition of volume rendering for refraction can improve the representation of 3D-space hierarchical relationships.But the quality of resultant images is highly sensitive to noises of the original dataset.In this paper,we present a refractive volume rendering method for iso-surface base on iterative Gaussian filter.Firstly,a CT dataset is filtered by iterative Gaussian filter in data preprocessing.Then the CT dataset is segmented into several parts by threshold method and it is mapped to different index of refraction by index of refraction transfer function.At last,ray casting is performed at volume data according to snell＇s law.Experiments show that the quality of resultant images is enhanced. |
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| Keywords: | Refractive Volume Rendering Gaussian Filter Iso-surface |
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