A study of attentional effects of intensity transforms for mammograms

Anthony Maeder

doi:10.1117/12.878336

A study of attentional effects of intensity transforms for mammograms

Research output: Contribution to conference › Paper › peer-review

Abstract

This paper presents a study of the attentional effects of two types of intensity distribution variations upon observer behaviour when viewing mammograms: equalisation (to a uniform image intensity histogram) and normalisation (to match an industry best practice image intensity histogram). For untrained observers, some consistent attraction of attention towards the strongest intensity regions of the images for the more highly contrasting equalised images as compared with the unprocessed images was detected. For the normalised images, this effect was even more marked. For a trained observer, no substantial disruption of attentional patterns during viewing was detected for equalised images, but was for normalised images. The nature and extent of the changes in the attentional behaviour for both untrained and trained observers indicates potential value in further studies and emphasizes the need to conduct clinically related studies with trained observers.

Original language	English
DOIs	https://doi.org/10.1117/12.878336
Publication status	Published - 16 May 2011
Event	Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment - Duration: 16 Feb 2011 → …

Conference

Conference	Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment
Period	16/02/11 → …

Keywords

Eye tracking
Histogram
Image display
Image perception
Mammogram
Observer performance
Technology assessment
Visual attention

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10.1117/12.878336

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AB - This paper presents a study of the attentional effects of two types of intensity distribution variations upon observer behaviour when viewing mammograms: equalisation (to a uniform image intensity histogram) and normalisation (to match an industry best practice image intensity histogram). For untrained observers, some consistent attraction of attention towards the strongest intensity regions of the images for the more highly contrasting equalised images as compared with the unprocessed images was detected. For the normalised images, this effect was even more marked. For a trained observer, no substantial disruption of attentional patterns during viewing was detected for equalised images, but was for normalised images. The nature and extent of the changes in the attentional behaviour for both untrained and trained observers indicates potential value in further studies and emphasizes the need to conduct clinically related studies with trained observers.

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KW - Histogram

KW - Image display

KW - Image perception

KW - Mammogram

KW - Observer performance

KW - Technology assessment

KW - Visual attention

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ER -

A study of attentional effects of intensity transforms for mammograms

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