Abstract
Power spectra of an extensive set of natural images were analysed. Both the total power in a spectrum (corresponding to image contrast) and its dependence on spatial frequency vary considerably between images, and also within images when considered as functions of orientation. A series of probabilistic models for power spectra enabled calculating the information obtained from prior knowledge of parameters describing spectra. Most information is gained from contrast, 1/f2 spatial frequency behaviour, and contrast as a function of orientation. Variations in spatial frequency behaviour are relatively unimportant. For oriented contrast, a bandwidth of 10-30 deg is sufficient to obtain most information.
Keywords
Contrast (vision)Spatial frequencySpectral lineOrientation (vector space)Spectral densityStatisticsSet (abstract data type)Probabilistic logicOpticsComputer scienceArtificial intelligencePattern recognition (psychology)MathematicsPhysicsGeometry
MeSH Terms
Contrast SensitivityHumansMathematicsModelsNeurologicalRotationVisual Perception
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Publication Info
- Year
- 1996
- Type
- article
- Volume
- 36
- Issue
- 17
- Pages
- 2759-2770
- Citations
- 525
- Access
- Closed
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Cite This
A. van der Schaaf,
J. H. van Hateren
(1996).
Modelling the Power Spectra of Natural Images: Statistics and Information.
Vision Research
, 36
(17)
, 2759-2770.
https://doi.org/10.1016/0042-6989(96)00002-8
Identifiers
- DOI
- 10.1016/0042-6989(96)00002-8
- PMID
- 8917763