Amplitude spectra of natural images
Open Access
- 1 April 1992
- journal article
- Published by Wiley in Ophthalmic and Physiological Optics
- Vol. 12 (2), 229-232
- https://doi.org/10.1111/j.1475-1313.1992.tb00296.x
Abstract
Several studies have suggested that the amplitude spectra of photographs of natural scenes are remarkably similar and have the form: This is, of course, a straight line with slope of −1.0 when plotted on double logarithmic coordinates. We have examined the amplitude spectra of 135 digitized photographs of natural scenes and have Found that relatively few images conform exactly to the suggestion. About 25% of the images in our sample have spectra which show significant curvature when plotted on log log coordinates. The best-fitting regression lines have slopes that range from −0.8 to −1.5: the average slope is −1.2, rather sleeper than previously suggested.Keywords
This publication has 9 references indexed in Scilit:
- The amplitude spectra of natural imagesOphthalmic and Physiological Optics, 1992
- The relative importance of local phase and local amplitude in patchwise image reconstructionBiological Cybernetics, 1991
- Human discrimination of fractal imagesJournal of the Optical Society of America A, 1990
- What The Statistics Of Natural Images Tell Us About Visual CodingPublished by SPIE-Intl Soc Optical Eng ,1989
- Relations between the statistics of natural images and the response properties of cortical cellsJournal of the Optical Society of America A, 1987
- Color and spatial structure in natural scenesApplied Optics, 1987
- A Demonstration of the Visual Importance and Flexibility of Spatial-Frequency Amplitude and PhasePerception, 1982
- THE IMPORTANCE OF PHASE IN SIGNALSProceedings of the IEEE, 1980
- On the existence of neurones in the human visual system selectively sensitive to the orientation and size of retinal imagesThe Journal of Physiology, 1969