Computer Graphics & Multimodal Brain Image Registration based on Surface Distance and Surface Curvature Optimization 


Vol. 11,  No. 5, pp. 391-400, Oct.  2004
10.3745/KIPSTA.2004.11.5.391


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  Abstract

Within multimodal medical image registration techniques, which correlate different images and provide integrated information, surface registration methods generally minimize the surface distance between two modalities. However, the features of two modalities acquired from one subject are similar. So, it can improve the accuracy of registration result to match two images based on optimization of both surface distance and shape feature. This research proposes a registration method which optimizes surface distance and surface curvature of two brain modalities. The registration process has two steps. First, surface information is extracted from the reference images and the test images. Next, the optimization process is performed. In the former step, the surface boundaries of regions of interest are extracted from the two modalities. And for the boundary of reference volume image, distance map and curvature map are generated. In the optimization step, a transformation minimizing both surface distance and surface curvature difference is determined by a cost function referring to the distance map and curvature map. The applying of the result transformation makes test volume be registered to reference volume. The suggested cost function makes possible a more robust and accurate registration result than that of the cost function using the surface distance only. Also, this research provides an efficient means for image analysis through volume visualization of the registration result.

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[IEEE Style]

J. Y. Park, Y. J. Choi, M. J. Kim, W. S. Tae, S. B. Hong, M. H. Kim, "Computer Graphics & Multimodal Brain Image Registration based on Surface Distance and Surface Curvature Optimization," The KIPS Transactions:PartA, vol. 11, no. 5, pp. 391-400, 2004. DOI: 10.3745/KIPSTA.2004.11.5.391.

[ACM Style]

Ji Young Park, Yoo Joo Choi, Min Jeong Kim, Woo Suk Tae, Seung Bong Hong, and Myoung Hee Kim. 2004. Computer Graphics & Multimodal Brain Image Registration based on Surface Distance and Surface Curvature Optimization. The KIPS Transactions:PartA, 11, 5, (2004), 391-400. DOI: 10.3745/KIPSTA.2004.11.5.391.

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