NDLI: A fast mapping method in the ISAF reconstruction algorithm

Content Provider	IEEE Xplore Digital Library
Author	Gongming Wang Fa Zhang Qi Chu Fei Sun Zhiyong Liu
Copyright Year	2011
Description	Author affiliation: Institute of Biophysics, CAS(CO:100101, Beijing, China) (Fei Sun) \|\| Institute of Computing Technology, CAS(CO:100190, Beijing, China) (Gongming Wang; Fa Zhang; Qi Chu; Zhiyong Liu)
Abstract	ISAF (icosahedral symmetry-adapted functions) algorithm is the new high-resolution algorithm of icosahedral molecules. But its running speed is very slow because of the time-consuming operations of mapping sampling points into 3D space. In this paper, a fast mapping method is proposed to increase the running speed of this stage. First of all, the angle corresponding to one pixel arc in the maximum Fourier ring was taken as the sampling angle and the same angle sampling was applied in every rings. After that, the sampling points in ring R=1 were mapped into 3D space. Finally, the 3D spatial positions of radial sampling points in other rings were deduced according to the rotate angle invariability of radial sampling points. The simulated data of PSV-F (Penicillium stoloniferum virus F) and experimental Cryo-EM data of CPV (cytoplasmic polyhedrosis virus) were used for validating this method. The results show that the whole speedup reaches to an order of magnitude at the premise of assuring accuracy. In addition, the speedup is increasing with the increase of the maximum Fourier radius and the number of projections.
Starting Page	3930
Ending Page	3933
File Size	821189
Page Count	4
File Format	PDF
ISBN	9781424441211
ISSN	1557170X
e-ISBN	9781457715891
e-ISBN	9781424441228
DOI	10.1109/IEMBS.2011.6090976
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image reconstruction Three dimensional displays Power capacitors Image resolution Accuracy Sun Noise
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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