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Proceedings Paper

Perceptual image quality in digital dermoscopy
Author(s): A. Avanaki; K. Espig; A. Xthona; D. Brooks; J. Young; T. Kimpe
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Paper Abstract

When using a conventional analogue dermatoscope, imperfect focus or other image quality problems are readily detected and corrected by the dermatologist. In digital dermoscopy, however, images may be inspected by the dermatologist well after their acquisition. In such a situation, there is no possibility to remedy image quality deficiencies. This demonstrates the importance of image quality in digital dermoscopy. In this paper, we investigate the effects of resolution, blur, and color consistency on the perceived quality of digital dermoscopic images. The effects are quantified using task-based adaptive measurements of human observers perceived threshold for each imaging parameter. Our results indicate that the thresholds for imaging parameters depend on the image content and the observer and that the acceptable quality threshold lies well below what is achievable with our current imaging equipment. An unexpected and interesting observation we made in the course of experiments is that a user may prefer a less colorful image to enhance visualization of certain details.

Paper Details

Date Published: 16 March 2020
PDF: 7 pages
Proc. SPIE 11316, Medical Imaging 2020: Image Perception, Observer Performance, and Technology Assessment, 1131614 (16 March 2020); doi: 10.1117/12.2549880
Show Author Affiliations
A. Avanaki, Barco Healthcare (United States)
K. Espig, Barco Healthcare (United States)
A. Xthona, Barco Healthcare (United States)
D. Brooks, Silver Falls Dermatology (United States)
J. Young, Silver Falls Dermatology (United States)
T. Kimpe, Barco Healthcare (Belgium)

Published in SPIE Proceedings Vol. 11316:
Medical Imaging 2020: Image Perception, Observer Performance, and Technology Assessment
Frank W. Samuelson; Sian Taylor-Phillips, Editor(s)

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