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  Large-scale failures of f-α scaling in natural image spectra

Langer, M. (2000). Large-scale failures of f-α scaling in natural image spectra. Journal of the Optical Society of America A, 17(1), 28-33. doi:10.1364/JOSAA.17.000028.

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Langer, MS1, Author           
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1External Organizations, ou_persistent22              

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 Abstract: Several studies have demonstrated that the power spectra of natural image ensembles scale as f−α. A stronger claim that has been made is that the power spectra of single natural images typically also scale as f−α. Results are presented that challenge this latter claim. The results are based on a method for estimating large-scale structure in single images that compares aliasing artifacts produced by image windows of different shape. Failures of f−α scaling are found at large scales in many natural images. These failures cannot be accounted for by f−α scaling models such as a linear superposition model or a model based on two-dimensional occlusions in the image plane. The results imply that claims about f−α scaling in single natural images have been exaggerated. The results also offer insight into why such failures of f−α scaling occur.

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 Dates: 2000-01
 Publication Status: Published in print
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 Identifiers: DOI: 10.1364/JOSAA.17.000028
BibTex Citekey: 91
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Title: Journal of the Optical Society of America A
Source Genre: Journal
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Publ. Info: Washington, D.C. : The Society
Pages: - Volume / Issue: 17 (1) Sequence Number: - Start / End Page: 28 - 33 Identifier: ISSN: 0740-3232
CoNE: https://pure.mpg.de/cone/journals/resource/954925538151_1