Further investigation into the effects of lossy compression using free-response methodology

Larry T. Cook, Michael F. Insana, Michael A. McFadden, Timothy J. Hall, Glendon G. Cox, Kyle C. Bryans

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

Abstract

Using free-response methodology, we measured the comparative performance of trained observers for the task of detecting simulated pulmonary nodules in computed radiographic chest images that were compressed using the full-frame discrete cosine transform algorithm. six observers read fifty-one images containing a total of 372 simulated lesions of size ranging from 8 mm to 12 mm and with six different contrasts. The images were compressed to an average of 15:1 with the same parameters that were used in an earlier two-alternative forced-choice analysis. The results showed this level of compression did not increase the number of false-positive calls per image. also, observers tended to ignore the lowest contrast nodules in all images. At low contrast we expect compression to have the greatest effect. Therefore, overall performance was not degraded by the compression process, although performance was compromised at very low contrast.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsHarold L. Kundel
Pages62-69
Number of pages8
StatePublished - Dec 1 1995
EventMedical Imaging 1995: Image Perception - San Diego, CA, USA
Duration: Mar 1 1995Mar 1 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2436
ISSN (Print)0277-786X

Other

OtherMedical Imaging 1995: Image Perception
CitySan Diego, CA, USA
Period3/1/953/1/95

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Cook, L. T., Insana, M. F., McFadden, M. A., Hall, T. J., Cox, G. G., & Bryans, K. C. (1995). Further investigation into the effects of lossy compression using free-response methodology. In H. L. Kundel (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 62-69). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2436).