[1] Li Yuanjin, Shu Huazhong, Luo Limin, et al. Application of the Delaunay triangulation interpolationin distortion XRII image [J]. Journal of Southeast University (English Edition), 2014, 30 (3): 306-310. [doi:10.3969/j.issn.1003-7985.2014.03.009]
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Application of the Delaunay triangulation interpolationin distortion XRII image(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 30
- Issue:
- 2014 3
- Page:
- 306-310
- Research Field:
- Computer Science and Engineering
- Publishing date:
- 2014-09-30
Info
- Title:
- Application of the Delaunay triangulation interpolationin distortion XRII image
- Author(s):
- Li Yuanjin1; 2; Shu Huazhong1; Luo Limin1; Chen Yang1; Wang Tao2; Yue Zuogang2
-
1Laboratory of Image Science and Technology, Southeast University, Nanjing 210096, China
2School of Computer and Information Engineering, Chuzhou University, Chuzhou 239000, China
- PACS:
- TP391.41
- DOI:
- 10.3969/j.issn.1003-7985.2014.03.009
- Abstract:
- To alleviate the distortion of XRII(X-ray image intensifier)images in the C-arm CT(computer tomography)imaging system, an algorithm based on the Delaunay triangulation interpolation is proposed. First, the causes of the phenomenon, the classical correction algorithms and the Delaunay triangulation interpolation are analyzed. Then, the algorithm procedure is explained using flow charts and illustrations. Finally, experiments are described to demonstrate its effectiveness and feasibility. Experimental results demonstrate that the Delaunay triangulation interpolation can have the following effects. In the case of the same center, the root mean square distances(RMSD)and standard deviation(STD)between the corrected image with Delaunay triangulation interpolation and the ideal image are 5.760 4×10-14 and 5.354 2×10-14, respectively. They increase to 1.790 3, 2.388 8, 2.338 8 and 1.262 0, 1.268 1, 1.202 6 after applying the quartic polynomial, model L1 and model L2 to the distorted images, respectively. The RMSDs and STDs between the corrected image with the Delaunay triangulation interpolation and the ideal image are 2.489×10-13 and 2.449 8×10-13 when their centers do not coincide. When the quartic polynomial, model L1 and model L2 are applied to the distorted images, they are 1.770 3, 2.388 8, 2.338 8 and 1.269 9, 1.268 1, 1.202 6, respectively.
References:
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Memo
- Memo:
-
Biographies: Li Yuanjin(1976—), male, doctor, associate professor; Shu Huazhong(corresponding author), male, doctor, professor, shu.list@seu.edu.cn.
Foundation items: The Natural Science Foundation of Anhui Province(No.1308085MF96), the Project of Chuzhou University(No.2012qd06, 2011kj010B), the Scientific Research Foundation of Education Department of Anhui Province(No.KJ2014A186), the National Basic Research Program of China(973 Program)(No.2010CB732503).
Citation: Li Yuanjin, Shu Huazhong, Luo Limin, et al. Application of the Delaunay triangulation interpolation in distortion XRII image[J].Journal of Southeast University(English Edition), 2014, 30(3):306-310.[doi:10.3969/j.issn.1003-7985.2014.03.009]