A stereoscopic computational observer model for image quality assessment

Aldo Badano

(US Food and Drug Administration)

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Date: December 10, 2014


As stereoscopic display devices become more commonplace, their image quality evaluation becomes increasingly important. Most studies on 3D displays rely on physical measurements or on human preference. Currently, there is no link correlating bench testing with detection performance for medical imaging applications. We describe a computational stereoscopic observer approach inspired by the mechanisms of stereopsis in human vision for task-based image quality assessment. The stereo-observer uses a left and a right image generated through a visualization operator to render 3D datasets for white and lumpy backgrounds. Our simulation framework generalizes different types of model observers including existing 2D and 3D observers as well as providing flexibility for the stereoscopic model approach. We show results quantifying the changes in performance when varying stereo angle as measured by the ideal linear stereoscopic observer. We apply the framework to the study of performance trade-offs for three stereoscopic display technologies. Our results show that the crosstalk signature for 3D content varies considerably when using different models of 3D glasses for active stereoscopic displays. Our methodology can be extended to model other aspects of the stereoscopic imaging chain in medical, entertainment, and other demanding applications.

Further Information:

Aldo Badano is a member of the Senior Biomedical Research Service and the Laboratory Leader for Imaging Physics in the Division of Imaging, Diagnostics, and Software Reliability, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, US Food and Drug Administration. Dr. Badano leads a program on the characterization, modeling and assessment of medical image acquisition and display devices using experimental and computational methods. Dr. Badano is an affiliate faculty at the Fischell Bioengineering Department at the University of Maryland College Park, and at the Computer Science and Electrical Engineering Department of University of Maryland, Baltimore County. He received a PhD degree in Nuclear Engineering and a MEng in Radiological Health Engineering from the University of Michigan in 1999 and 1995, and a ChemEng degree from the Universidad de la República, Montevideo, Uruguay in 1992. He serves as Associate Editor for several scientific journals and as reviewer of technical proposals for DOD and NIH. Dr. Badano has authored more than 250 publications and a tutorial textbook on medical displays.

Created: Thursday, December 11th, 2014