TY - JOUR
T1 - Image enhancement by non-linear extrapolation in frequency space
AU - Greenspan, H.
AU - Anderson, C. H.
N1 - Publisher Copyright:
© 1994 SPIE. All rights reserved.
PY - 1994/3/23
Y1 - 1994/3/23
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 - http://www.scopus.com/inward/record.url?scp=85076604678&partnerID=8YFLogxK
U2 - 10.1117/12.171057
DO - 10.1117/12.171057
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AN - SCOPUS:85076604678
SN - 0277-786X
VL - 2182
SP - 2
EP - 13
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 -