On the development of a new non-rigid image registration using deformation based grid generation

11 March 2008 On the development of a new non-rigid image registration using deformation based grid generation

Chih-Yao Hsieh, Hua-mei Chen, Ting-Hung Lin, Hsi-Yue Hsiao, Mei-Yi Chu, Guojun Liao, Hualiang Zhong

Author Affiliations +

Proceedings Volume 6914, Medical Imaging 2008: Image Processing; 69140W (2008) https://doi.org/10.1117/12.769811
Event: Medical Imaging, 2008, San Diego, California, United States

Abstract

In this paper, we present the latest results of the development of a novel non-rigid image registration method (NiRuDeGG) using a well-established mathematical framework known as the deformation based grid generation. The deformation based grid generation method is able to generate a grid with desired grid density distribution which is free from grid folding. This is achieved by devising a positive monitor function describing the anticipated grid density in the computational domain. Based on it, we have successfully developed a new non-rigid image registration method, which has many advantages. Firstly, the functional to be optimized consists of only one term, a similarity measure. Thus, no regularization functional is required in this method. In particular, there is no weight to balance the regularization functional and the similarity functional as commonly required in many non-rigid image registration methods. Nevertheless, the regularity (no mesh folding) of the resultant deformation is theoretically guaranteed by controlling the Jacobian determinant of the transformation. Secondly, since no regularization term is introduced in the functional to be optimized, the resultant deformation field is highly flexible that large deformation frequently experienced in inter-patient or image-atlas registration tasks can be accurately estimated. Detailed description of the deformation based grid generation, a least square finite element (LSFEM) solver for the underlying div-curl system, and a fast div-curl solver approximating the LSFEM solution using inverse filtering, along with several 2D and 3D experimental results are presented.

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Chih-Yao Hsieh, Hua-mei Chen, Ting-Hung Lin, Hsi-Yue Hsiao, Mei-Yi Chu, Guojun Liao, and Hualiang Zhong "On the development of a new non-rigid image registration using deformation based grid generation", Proc. SPIE 6914, Medical Imaging 2008: Image Processing, 69140W (11 March 2008); https://doi.org/10.1117/12.769811

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