Spatially-variant roughness penalty design for uniform resolution in penalized-likelihood image reconstruction

Joseph Webster Stayman, Jeffrey A. Fessler

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

Abstract

Traditional space-invariant regularization schemes in tomographic image reconstruction using penalized-likelihood estimators produce images with nonuniform resolution properties. The local point spread functions that quantify the local smoothing properties of such estimators are not only space-variant and asymmetric, but are also object-dependent even for space-invariant systems. We propose a new regularization scheme for increased spatial uniformity and demonstrate the resolution properties of this new method versus conventional regularization schemes through an investigation of local point spread functions.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Image Processing
PublisherIEEE Comp Soc
Pages685-689
Number of pages5
Volume2
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 International Conference on Image Processing, ICIP. Part 2 (of 3) - Chicago, IL, USA
Duration: Oct 4 1998Oct 7 1998

Other

OtherProceedings of the 1998 International Conference on Image Processing, ICIP. Part 2 (of 3)
CityChicago, IL, USA
Period10/4/9810/7/98

Fingerprint

Optical transfer function
Image reconstruction
Surface roughness

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

Stayman, J. W., & Fessler, J. A. (1998). Spatially-variant roughness penalty design for uniform resolution in penalized-likelihood image reconstruction. In IEEE International Conference on Image Processing (Vol. 2, pp. 685-689). IEEE Comp Soc.

Spatially-variant roughness penalty design for uniform resolution in penalized-likelihood image reconstruction. / Stayman, Joseph Webster; Fessler, Jeffrey A.

IEEE International Conference on Image Processing. Vol. 2 IEEE Comp Soc, 1998. p. 685-689.

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

Stayman, JW & Fessler, JA 1998, Spatially-variant roughness penalty design for uniform resolution in penalized-likelihood image reconstruction. in IEEE International Conference on Image Processing. vol. 2, IEEE Comp Soc, pp. 685-689, Proceedings of the 1998 International Conference on Image Processing, ICIP. Part 2 (of 3), Chicago, IL, USA, 10/4/98.
Stayman JW, Fessler JA. Spatially-variant roughness penalty design for uniform resolution in penalized-likelihood image reconstruction. In IEEE International Conference on Image Processing. Vol. 2. IEEE Comp Soc. 1998. p. 685-689
Stayman, Joseph Webster ; Fessler, Jeffrey A. / Spatially-variant roughness penalty design for uniform resolution in penalized-likelihood image reconstruction. IEEE International Conference on Image Processing. Vol. 2 IEEE Comp Soc, 1998. pp. 685-689
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