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The use of steerable channels for detecting asymmetrical signals with random orientations

Bart Goossens (UGent) , Ljiljana Platisa (UGent) , Ewout Vansteenkiste (UGent) and Wilfried Philips (UGent)
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Abstract
In the optimization of medical imaging systems, there is a stringent need to shift from human observer studies to numerical observer studies, because of both cost and time limitations. Numerical models give an objective measure for the quality of displayed images for a given task and can be designed to predict the performance of medical specialists performing the same task. For the task of signal detection, the channelized Hotelling observer (CHO) has been successfully used, although several studies indicate an overefficiency of the CHO compared to human observers. One of the main causes of this overefficiency is attributed to the intrinsic uncertainty about the signal (such as its orientation) that a human observer is dealing with. Deeper knowledge of the discrepancies of the CHO and the human observer may provide extra insight in the processing of the human visual system and this knowledge can be utilized to better fine-tune medical imaging systems.
Keywords
Model Observers, Steerable Channels, Joint detection and estimation, Signal Known Statistically (SKS), SUBTLE LUNG NODULES, OBJECTIVE ASSESSMENT, CHEST RADIOGRAPHS, HUMAN-OBSERVER, IMAGE QUALITY, NOISE, VARIABILITY, PERFORMANCE, STATISTICS, QUANTUM

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Chicago
Goossens, Bart, Ljiljana Platisa, Ewout Vansteenkiste, and Wilfried Philips. 2010. “The Use of Steerable Channels for Detecting Asymmetrical Signals with Random Orientations.” In Proceedings of Spie - the International Society for Optical Engineering, ed. David J Manning and Craig K Abbey. Vol. 7627. Bellingham, WA, USA: International Society for Optical Engineering (SPIE).
APA
Goossens, B., Platisa, L., Vansteenkiste, E., & Philips, W. (2010). The use of steerable channels for detecting asymmetrical signals with random orientations. In D. J. Manning & C. K. Abbey (Eds.), PROCEEDINGS OF SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING (Vol. 7627). Presented at the Medical Imaging 2010 : Image perception, observer performance, and technology assessment, Bellingham, WA, USA: International Society for Optical Engineering (SPIE).
Vancouver
1.
Goossens B, Platisa L, Vansteenkiste E, Philips W. The use of steerable channels for detecting asymmetrical signals with random orientations. In: Manning DJ, Abbey CK, editors. PROCEEDINGS OF SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING. Bellingham, WA, USA: International Society for Optical Engineering (SPIE); 2010.
MLA
Goossens, Bart, Ljiljana Platisa, Ewout Vansteenkiste, et al. “The Use of Steerable Channels for Detecting Asymmetrical Signals with Random Orientations.” Proceedings of Spie - the International Society for Optical Engineering. Ed. David J Manning & Craig K Abbey. Vol. 7627. Bellingham, WA, USA: International Society for Optical Engineering (SPIE), 2010. Print.
@inproceedings{1002624,
  abstract     = {In the optimization of medical imaging systems, there is a stringent need to shift from human observer studies to numerical observer studies, because of both cost and time limitations. Numerical models give an objective measure for the quality of displayed images for a given task and can be designed to predict the performance of medical specialists performing the same task. For the task of signal detection, the channelized Hotelling observer (CHO) has been successfully used, although several studies indicate an overefficiency of the CHO compared to human observers. One of the main causes of this overefficiency is attributed to the intrinsic uncertainty about the signal (such as its orientation) that a human observer is dealing with. Deeper knowledge of the discrepancies of the CHO and the human observer may provide extra insight in the processing of the human visual system and this knowledge can be utilized to better fine-tune medical imaging systems.},
  articleno    = {76270S},
  author       = {Goossens, Bart and Platisa, Ljiljana and Vansteenkiste, Ewout and Philips, Wilfried},
  booktitle    = {PROCEEDINGS OF SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING},
  editor       = {Manning, David J and Abbey, Craig K},
  isbn         = {9780819480286},
  issn         = {0277-786X},
  keyword      = {Model Observers,Steerable Channels,Joint detection and estimation,Signal Known Statistically (SKS),SUBTLE LUNG NODULES,OBJECTIVE ASSESSMENT,CHEST RADIOGRAPHS,HUMAN-OBSERVER,IMAGE QUALITY,NOISE,VARIABILITY,PERFORMANCE,STATISTICS,QUANTUM},
  language     = {eng},
  location     = {San Diego, CA, USA},
  pages        = {11},
  publisher    = {International Society for Optical Engineering (SPIE)},
  title        = {The use of steerable channels for detecting asymmetrical signals with random orientations},
  url          = {http://dx.doi.org/10.1117/12.843782},
  volume       = {7627},
  year         = {2010},
}

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