DocumentCode :
53888
Title :
Colon Flattening Using Heat Diffusion Riemannian Metric
Author :
Gurijala, Krishna Chaitanya ; Rui Shi ; Wei Zeng ; Xianfeng Gu ; Kaufman, Arie
Author_Institution :
Stony Brook Univ., Stony Brook, NY, USA
Volume :
19
Issue :
12
fYear :
2013
fDate :
Dec. 2013
Firstpage :
2848
Lastpage :
2857
Abstract :
We propose a new colon flattening algorithm that is efficient, shape-preserving, and robust to topological noise. Unlike previous approaches, which require a mandatory topological denoising to remove fake handles, our algorithm directly flattens the colon surface without any denoising. In our method, we replace the original Euclidean metric of the colon surface with a heat diffusion metric that is insensitive to topological noise. Using this heat diffusion metric, we then solve a Laplacian equation followed by an integration step to compute the final flattening. We demonstrate that our method is shape-preserving and the shape of the polyps are well preserved. The flattened colon also provides an efficient way to enhance the navigation and inspection in virtual colonoscopy. We further show how the existing colon registration pipeline is made more robust by using our colon flattening. We have tested our method on several colon wall surfaces and the experimental results demonstrate the robustness and the efficiency of our method.
Keywords :
Laplace equations; image registration; medical image processing; rendering (computer graphics); Euclidean metric; Laplacian equation; colon flattening; colon registration pipeline; heat diffusion Riemannian metric; heat diffusion metric; integration step; shape-preserving; topological noise; virtual colonoscopy inspection; volume rendering; Biomedical measurement; Colonoscopy; Harmonic analysis; Heating; Volume rendering; Biomedical measurement; Colon flattening; Colonoscopy; Harmonic analysis; Heating; Volume rendering; heat diffusion; shape-preserving mapping; topological noise; virtual colonoscopy; volume rendering; Algorithms; Animals; Artifacts; Colon; Colonography, Computed Tomographic; Computer Graphics; Diffusion; Energy Transfer; Hot Temperature; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Reproducibility of Results; Sensitivity and Specificity; Thermal Conductivity; User-Computer Interface;
fLanguage :
English
Journal_Title :
Visualization and Computer Graphics, IEEE Transactions on
Publisher :
ieee
ISSN :
1077-2626
Type :
jour
DOI :
10.1109/TVCG.2013.139
Filename :
6634145
Link To Document :
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