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16 March 2020 Perceptual image quality in digital dermoscopy
A. Avanaki, K. Espig, A. Xthona, D. Brooks, J. Young, T. Kimpe
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Proceedings Volume 11316, Medical Imaging 2020: Image Perception, Observer Performance, and Technology Assessment; 1131614 (2020) https://doi.org/10.1117/12.2549880
Event: SPIE Medical Imaging, 2020, Houston, Texas, United States
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.
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A. Avanaki, K. Espig, A. Xthona, D. Brooks, J. Young, and T. Kimpe "Perceptual image quality in digital dermoscopy", Proc. SPIE 11316, Medical Imaging 2020: Image Perception, Observer Performance, and Technology Assessment, 1131614 (16 March 2020); https://doi.org/10.1117/12.2549880
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KEYWORDS
Image quality
Image resolution
Point spread functions
Image visualization
Dermatology
Image quality standards
Quality measurement
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