Dynamic model generation for application of compressed sensing to cryo-electron tomography reconstruction

Sally Wood, Ernesto Fontenla, Chris Metzler, Wah Chiu, Richard G. Baraniuk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Cryo-electron tomography (cryo-ET), which produces three dimensional images at molecular resolution, is one of many applications that requires image reconstruction from projection measurements acquired with irregular measurement geometry. Although Fourier transform based reconstruction methods have been widely and successfully used in medical imaging for over 25 years, assumptions of regular measurement geometry and a band limited source cause direction sensitive artifacts when applied to cryo-ET. Iterative space domain methods such as compressed sensing could be applied to this severely underdetermined system with a limited range of projection angles and projection length, but progress has been hindered by the computational and storage requirements of the very large projection matrix of observation partials. In this paper we derive a method of dynamically computing the elements of the projection matrix accurately for continuous basis functions of limited extent with arbitrary beam width. Storage requirements are reduced by a factor of order 107 and there is no access overhead. This approach for limited angle and limited view measurement geometries is posed to enable dramatically improved reconstruction performance and is easily adapted to parallel computing architectures.

Original languageEnglish (US)
Title of host publication2015 IEEE Signal Processing and Signal Processing Education Workshop, SP/SPE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages226-231
Number of pages6
ISBN (Print)9781467391696
DOIs
StatePublished - Dec 30 2015
EventIEEE Signal Processing and Signal Processing Education Workshop, SP/SPE 2015 - Salt Lake City, United States
Duration: Aug 9 2015Aug 12 2015

Other

OtherIEEE Signal Processing and Signal Processing Education Workshop, SP/SPE 2015
CountryUnited States
CitySalt Lake City
Period8/9/158/12/15

Keywords

  • compressed sensing
  • cryo-electron tomography
  • limited angle reconstruction

ASJC Scopus subject areas

  • Signal Processing
  • Education

Fingerprint Dive into the research topics of 'Dynamic model generation for application of compressed sensing to cryo-electron tomography reconstruction'. Together they form a unique fingerprint.

Cite this