基于三维梯度幅值的CT图像体绘制

doi:10.16182/j.issn1004731x.joss.201807029

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (7): 2666-2674.doi: 10.16182/j.issn1004731x.joss.201807029

基于三维梯度幅值的CT图像体绘制

罗明^1,2, 孙水发^1,2, 王骊雯¹, 董方敏²

1. 三峡大学计算机与信息学院, 宜昌 443002;
2. 水电工程智能视觉监测湖北省重点实验室, 宜昌 443002

收稿日期:2017-09-15 出版日期:2018-07-10 发布日期:2019-01-08
作者简介:罗明(1992-),男,湖北咸宁,硕士生,研究方向为三维重建、并行计算。
基金资助:
国家自然科学基金(61272237,61273243),湖北省自然科学基金创新群体(2015CFA025),湖北省教育厅科学技术研究计划重点项目(D20151204)

Volume Rendering for CT Images Based on 3D Gradient Amplitude

Luo Ming^1,2, Sun Shuifa^1,2, Wang Liwen¹, Dong Fangmin²

1. The china Three Gorges University computer and information institute, Yichang 443002, China;
2. Intelligent visual monitoring key laboratory of hydropower project, Hubei Yichang 443002, China

Received:2017-09-15 Online:2018-07-10 Published:2019-01-08

摘要/Abstract

摘要： 为了在CT影像体绘制过程中保持感兴趣区域三维空间的局部形状特征,提出了一种基于三维梯度幅值的传递函数设计方法：利用边缘提取和去噪分割等处理得到感兴趣区域的完整边缘结构,计算体数据中图像序列像素点到边缘处的距离,以此距离值纳入Kindlmann的传递函数生成框架,得到新的传递。与Kindlmann提出的半自动传递函数生成算法进行体绘制对比实验,结果表明：原始方法对图像噪声敏感等问题得到明显改善,能有效突显出感兴趣的区域。

关键词: 体绘制, 形状特征, 三维梯度, 传递函数

Abstract: In order to maintain the partial shape characteristics of the three-dimensional space of interest in the process of CT images volume rendering, a transfer function method based on the three dimensional gradient amplitude is proposed. Edge detection and denoising segmentation are employed to obtain the complete edge structure of the interested area. The distance between the image sequences pixels and the edge in the body data is calculated, so that the framework can be formed with the distance data brought into the Kindlmann transfer function. Therefore, a new transfer function is achieved. The comparison experiment with semi-automatic transfer function proposed by Kindlmann shows that problems like image noise sensitivity can be obviously solved by original methods, which can also highlight the interested parts.

Key words: volume rendering, shape features, three-dimensional gradient, transfer function

中图分类号:

TP391.41

罗明, 孙水发, 王骊雯, 董方敏. 基于三维梯度幅值的CT图像体绘制[J]. 系统仿真学报, 2018, 30(7): 2666-2674.

Luo Ming, Sun Shuifa, Wang Liwen, Dong Fangmin. Volume Rendering for CT Images Based on 3D Gradient Amplitude[J]. Journal of System Simulation, 2018, 30(7): 2666-2674.

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基于三维梯度幅值的CT图像体绘制

Volume Rendering for CT Images Based on 3D Gradient Amplitude

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