Variations on Image Reconstruction:Weighted Back Projection and Fourier Expectation Maximization (English)

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Expectation Maximization and Filtered Back Projection are two common techniques for Tomographic reconstruction of images and volumes. While papers often demonstrat that EM produces higher quality reconstructions, particularly from lower numbers of projections, FBP remains popular due to its low computational complexity. In the following work we present and analyse a modified Expectation Maximization approach which takes advantage of the Fourier Slice Theorem to reduce the bottleneck of forward and back projection. We also investigate Weighted Back Projection, a variation of Filtered Back Projection which uses a weighted average approach to avoid the use of arbitrarily chosen filters.

  • Title:
    Variations on Image Reconstruction:Weighted Back Projection and Fourier Expectation Maximization
  • Author / Creator:
  • Published in:
  • Publisher:
    The Eurographics Association
  • Year of publication:
    2014
  • Size:
    8 pages
  • ISBN:
  • DOI:
  • Type of media:
    Conference paper
  • Type of material:
    Electronic Resource
  • Language:
    English
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Table of contents conference proceedings

The tables of contents are generated automatically and are based on the data records of the individual contributions available in the index of the TIB portal. The display of the Tables of Contents may therefore be incomplete.

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Variations on Image Reconstruction:Weighted Back Projection and Fourier Expectation Maximization
Ryan, Andrew / Mora, B. | 2014
Developing Next-Generation Interactive Visualization Tools for Medical Devices: from Image-only Approach to a Quantitative, Numerical Simulation-Based Platform
Silvestro, Claudio / Celi, Simona / Rochette, Michel / Prakash, Edmond | 2014
Comparative Visualization and Analysis of Time-Dependent, 2D Foam Simulation Data
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Interactive and Scalable Cloth Simulation API for Games
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Simplifying Multivariate Topology (Extended Abstract)
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Roberts, David A. T. | 2014
Conversion of Trimmed NURBS Surfaces to Untrimmed Catmull-Clark Subdivision Surfaces
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