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Proceedings Article

Higher-order scene statistics of breast images

[+] Author Affiliations
Craig K. Abbey

Univ. of California, Santa Barbara (USA) and Univ. of California, Davis (USA)

Jascha N. Sohl-Dickstein, Bruno A. Olshausen

Univ. of California, Berkeley (USA)

Miguel P. Eckstein

Univ. of California, Santa Barbara (USA)

John M. Boone

Univ. of California, Davis (USA) and UC Davis Medical Ctr. (USA)

Proc. SPIE 7263, Medical Imaging 2009: Image Perception, Observer Performance, and Technology Assessment, 726317 (March 12, 2009); doi:10.1117/12.813797
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From Conference Volume 7263

  • Medical Imaging 2009: Image Perception, Observer Performance, and Technology Assessment
  • Berkman Sahiner; David J. Manning
  • Lake Buena Vista, FL | February 07, 2009

abstract

Researchers studying human and computer vision have found description and construction of these systems greatly aided by analysis of the statistical properties of naturally occurring scenes. More specifically, it has been found that receptive fields with directional selectivity and bandwidth properties similar to mammalian visual systems are more closely matched to the statistics of natural scenes. It is argued that this allows for sparse representation of the independent components of natural images [Olshausen and Field, Nature, 1996]. These theories have important implications for medical image perception. For example, will a system that is designed to represent the independent components of natural scenes, where objects occlude one another and illumination is typically reflected, be appropriate for X-ray imaging, where features superimpose on one another and illumination is transmissive? In this research we begin to examine these issues by evaluating higher-order statistical properties of breast images from X-ray projection mammography (PM) and dedicated breast computed tomography (bCT). We evaluate kurtosis in responses of octave bandwidth Gabor filters applied to PM and to coronal slices of bCT scans. We find that kurtosis in PM rises and quickly saturates for filter center frequencies with an average value above 0.95. By contrast, kurtosis in bCT peaks near 0.20 cyc/mm with kurtosis of approximately 2. Our findings suggest that the human visual system may be tuned to represent breast tissue more effectively in bCT over a specific range of spatial frequencies.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Craig K. Abbey ; Jascha N. Sohl-Dickstein ; Bruno A. Olshausen ; Miguel P. Eckstein and John M. Boone
"Higher-order scene statistics of breast images", Proc. SPIE 7263, Medical Imaging 2009: Image Perception, Observer Performance, and Technology Assessment, 726317 (March 12, 2009); doi:10.1117/12.813797; http://dx.doi.org/10.1117/12.813797


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