Discover common properties of human observers' visual search and mathematical observers' scanning PART II: emperical studies using human and model observers

Xin He; Frank Samuelson; Berkman Sahiner

doi:10.1117/12.2043319

11 March 2014 Discover common properties of human observers' visual search and mathematical observers' scanning PART II: emperical studies using human and model observers

Xin He, Frank Samuelson, Berkman Sahiner

Author Affiliations +

Proceedings Volume 9037, Medical Imaging 2014: Image Perception, Observer Performance, and Technology Assessment; 903713 (2014) https://doi.org/10.1117/12.2043319
Event: SPIE Medical Imaging, 2014, San Diego, California, United States

Abstract

In a companion paper, we proposed the well-delineated-object conjecture to describe a rational observer’s behavior in a search task. We discovered two intrinsic properties to describe the performance of rational search observers: rationality in classification and location uncertainty. We proposed to use the location-known-exactly (LKE) ROC curve and the effective number of well-delineated objects or effective set size (M*) to quantify these two properties. The purpose of this paper is to develop an experimental framework to test the conjecture that was put forward in the companion paper. In particular, for each observer, we designed experiments to measure LKE ROC curve and M*, which were then used to predict the same observer’s performance in other search tasks. The predictions were then compared to the experimentally measured observer performance. Our results indicate that modeling the search performance using the LKE ROC curve and M* leads to successful predictions in most cases.

Citation Download Citation

Xin He, Frank Samuelson, and Berkman Sahiner "Discover common properties of human observers' visual search and mathematical observers' scanning PART II: emperical studies using human and model observers", Proc. SPIE 9037, Medical Imaging 2014: Image Perception, Observer Performance, and Technology Assessment, 903713 (11 March 2014); https://doi.org/10.1117/12.2043319

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available