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- W2037842361 abstract "The diagnostic value of a medical image after it has been decompressed is a very practical measure of the image quality and the compression method. A computational observer can be used to make decisions based on an image and thus can provide an assessment of diagnostic value. This paper provides a closed-form estimate of the channelized Hotelling observer's (CHO) output. In medical applications, CHO has been used successfully to predict human observer performance and to evaluate image quality for detection tasks in various backgrounds. To date, it has been used only empirically - i.e., on a set of images - to evaluate compressed image quality. Using a representation of compression noise this paper derives in closed-form the corresponding CHO test statistics and performance. The performance (as measured by the receiver operating characteristic [ROC]) is verified using decompressed JPEG lumpy-background images. The verification results show that the derived ROCs predict the estimated ROCs very well." @default.
- W2037842361 created "2016-06-24" @default.
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- W2037842361 date "2007-01-01" @default.
- W2037842361 modified "2023-09-23" @default.
- W2037842361 title "Quality Measures for Decompressed Medical Images: Statistics, Observers, and ROCs" @default.
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- W2037842361 doi "https://doi.org/10.1109/icassp.2007.366679" @default.
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