Use of a human visual system model to predict observer performance with CRT vs LCD display of images

Elizabeth A. Krupinski, Jeffrey Johnson, Hans Roehrig, John Nafziger, Jiahua Fan, Jeffery Lubin

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

This Project evaluated a human visual system model (JNDmetrix) based on just noticeable difference (JND) and frequency-channel vision-modeling principles to assess whether a Cathode ray tube (CRT) or a liquid crystal display (LCD) monochrome display monitor would yield better observer performance in radiographic interpretation. Key physical characteristics, such as veiling glare and modulation transfer function (MTF) of the CRT and LCD were measured. Regions of interest from mammographic images with masses of different contrast levels were shown once on each display to six radiologists using a counterbalanced presentation order. The images were analyzed using the JNDmetrix model. Performance as measured by receiver operating characteristic (ROC) analysis was significantly better overall on the LCD display (P = 0.0120). The JNDmetrix model predicted the result (P = 0.0046) and correlation between human and computer observers was high (r2 (quadratic) = 0.997). The results suggest that observer performance with LCD displays is superior to CRT viewing, at least for on-axis viewing.

Original languageEnglish (US)
Pages (from-to)258-263
Number of pages6
JournalJournal of Digital Imaging
Volume17
Issue number4
DOIs
StatePublished - Dec 1 2004

Keywords

  • Digital display
  • Observer performance
  • Vision model

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Computer Science Applications

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