A psychophysical evaluation of the a contrario detection theory

The a contrario theory is a mathematical formalization of the so-called non-accidentalness principle of perception, which states that an observed configuration is relevant only when it is unlikely to appear just by chance. It has been successfully applied to several image processing and computer vis...

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Published inProceedings - International Conference on Image Processing pp. 1091 - 1095
Main Authors Blusseau, S., Carboni, A., Maiche, A., Morel, J. M., Grompone von Gioi, R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2014
Subjects
A-contrario detection
Brain models
Computational modeling
Computer vision
Detection algorithms
Image segmentation
Jitter
Psychometric testing
Visualization
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Abstract The a contrario theory is a mathematical formalization of the so-called non-accidentalness principle of perception, which states that an observed configuration is relevant only when it is unlikely to appear just by chance. It has been successfully applied to several image processing and computer vision problems. In this paper, human vision is compared to an a contrario based algorithm in a simple perceptual task. For this aim, a psychophysical experiment was set up, in which subjects and the algorithm were asked to detect alignments of Gabor patches. We found that the proposed algorithm predicted accurately the subjects' responses, therefore providing an interpretation to perceptual thresholds.
AbstractList The a contrario theory is a mathematical formalization of the so-called non-accidentalness principle of perception, which states that an observed configuration is relevant only when it is unlikely to appear just by chance. It has been successfully applied to several image processing and computer vision problems. In this paper, human vision is compared to an a contrario based algorithm in a simple perceptual task. For this aim, a psychophysical experiment was set up, in which subjects and the algorithm were asked to detect alignments of Gabor patches. We found that the proposed algorithm predicted accurately the subjects' responses, therefore providing an interpretation to perceptual thresholds.
Author Maiche, A.
Morel, J. M.
Blusseau, S.
Grompone von Gioi, R.
Carboni, A.
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  surname: Grompone von Gioi
  fullname: Grompone von Gioi, R.
  organization: CMLA, ENS Cachan, Cachan, France
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Snippet The a contrario theory is a mathematical formalization of the so-called non-accidentalness principle of perception, which states that an observed configuration...
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StartPage 1091
SubjectTerms A-contrario detection
Brain models
Computational modeling
Computer vision
Detection algorithms
Image segmentation
Jitter
Psychometric testing
Visualization
Title A psychophysical evaluation of the a contrario detection theory
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