Numerical stability issues on channelized Hotelling observer under different background assumptions
نویسندگان
چکیده
منابع مشابه
Numerical stability issues on channelized Hotelling observer under different background assumptions.
This paper addresses the numerical stability issue on the channelized Hotelling observer (CHO). The CHO is a well-known approach in the medical image quality assessment domain. Many researchers have found that the detection performance of the CHO does not increase with the number of channels, contrary to expectation. And to our knowledge, nobody in this domain has found the reason. We illustrat...
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What type of regularization method is optimal for penalized-likelihood image reconstruction when the imaging task is signal detection based on a channelized Hotelling (CHO) observer? To answer such questions, one would like to have a simple analytical expression (even if approximate) for the performance (SNR) of the CHO observer given different reconstruction methods. Bonetto, Qi, and Leahy (IE...
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Medical-imaging systems are designed to aid medical specialists in a specific task. In order to satisfy the quality preferences of a human observer, the optimization of medicalimaging systems has to include measurements of human performance and has to use these results for final tuning of the physical parameters of the system. To measure human performance it is necessary to conduct the psychoph...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America A
سال: 2014
ISSN: 1084-7529,1520-8532
DOI: 10.1364/josaa.31.001112