Image enhancement by non-linear extrapolation in frequency space

H. Greenspan; C. H. Anderson

doi:10.1117/12.171057

Image enhancement by non-linear extrapolation in frequency space

H. Greenspan
, C. H. Anderson

Research output: Contribution to journal › Conference article › peer-review

31 Scopus citations

Abstract

A procedure for creating images with higher resolution than the sampling rate would allow is described. The enhancement algorithm augments the frequency content of the image using shape-invariant properties of edges across scale by using a non-linearity that generates phase-coherent higher harmonics. The procedure utilizes the Laplacian pyramid image representation. Results are presented depicting the power-spectra augmentation and the visual enhancement of several images. Simplicity of computations and ease of implementation allow for real-time applications such as high-definition television (HDTV).

Original language	English
Pages (from-to)	2-13
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2182
DOIs	https://doi.org/10.1117/12.171057
State	Published - 23 Mar 1994
Externally published	Yes
Event	Image and Video Processing II 1994 - San Jose, United States Duration: 6 Feb 1994 → 10 Feb 1994

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abstract = "A procedure for creating images with higher resolution than the sampling rate would allow is described. The enhancement algorithm augments the frequency content of the image using shape-invariant properties of edges across scale by using a non-linearity that generates phase-coherent higher harmonics. The procedure utilizes the Laplacian pyramid image representation. Results are presented depicting the power-spectra augmentation and the visual enhancement of several images. Simplicity of computations and ease of implementation allow for real-time applications such as high-definition television (HDTV).",

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AU - Anderson, C. H.

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N2 - A procedure for creating images with higher resolution than the sampling rate would allow is described. The enhancement algorithm augments the frequency content of the image using shape-invariant properties of edges across scale by using a non-linearity that generates phase-coherent higher harmonics. The procedure utilizes the Laplacian pyramid image representation. Results are presented depicting the power-spectra augmentation and the visual enhancement of several images. Simplicity of computations and ease of implementation allow for real-time applications such as high-definition television (HDTV).

AB - A procedure for creating images with higher resolution than the sampling rate would allow is described. The enhancement algorithm augments the frequency content of the image using shape-invariant properties of edges across scale by using a non-linearity that generates phase-coherent higher harmonics. The procedure utilizes the Laplacian pyramid image representation. Results are presented depicting the power-spectra augmentation and the visual enhancement of several images. Simplicity of computations and ease of implementation allow for real-time applications such as high-definition television (HDTV).

UR - https://www.scopus.com/pages/publications/85076604678

U2 - 10.1117/12.171057

DO - 10.1117/12.171057

M3 - Conference article

AN - SCOPUS:85076604678

SN - 0277-786X

VL - 2182

SP - 2

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Image and Video Processing II 1994

Y2 - 6 February 1994 through 10 February 1994

ER -

Image enhancement by non-linear extrapolation in frequency space

Abstract

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