Optimal viewpoint selection for volume rendering using shuffled frog leaping algorithm

doi:10.11834/jig.20110918

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Optimal viewpoint selection for volume rendering using shuffled frog leaping algorithm
Vol. 16, Issue 9, Pages: 1670-1675(2011)
Published Online：15 September 2011，

Published：2011
DOI： 10.11834/jig.20110918
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DOI：

Optimal viewpoint selection for volume rendering using shuffled frog leaping algorithm[J]. Journal of Image and Graphics, 2011, 16(9): 1670-1675. DOI： 10.11834/jig.20110918.

摘要

提出一种基于混合蛙跳算法的体绘制最佳视点选择方法。利用体数据投影图像的不透明度和亮度以及提取的结构信息特征，建立反映体素重要性和体数据内部结构信息的视点评价函数；将视点评价函数作为混合蛙跳算法的适应度函数，用混合蛙跳算法来指导和优化体绘制最佳视点的选择过程，以得到全局最优视点或一组被优化的视点集。实验表明，该方法能够快速有效地聚焦和显示体数据中的重要结构信息或感兴趣区域，算法的收敛速度和收敛精度高，具有良好的全局最佳视点选择性能，能够用来指导大规模体数据场的体绘制过程。

Abstract

An optimal viewpoint selection method for volume rendering based on shuffled frog leaping algorithm is presented.Utilizing the opacity，luminance and structure features of the projected views of three-dimensional volume dates，a viewpoint evaluation function is constructed to identify the importance of voxels and the structural information within the volume data.Combined with this function，shuffled frog leaping algorithm is used to optimize the computation process of the optimal viewpoint selection，so as to acquire a global optimal viewpoint or a series of optimal viewpoints.The experimental results show this method can not only focus on important structural information and region of interest more effectively，but also improve the convergence rate and accuracy，while having a standout performance to select a global optimal viewpoint.Thus it can be used to guide the volume rendering for large scale volume datasets.