BIOMEDICAL IMAGING GROUP (BIG)
Laboratoire d'imagerie biomédicale (LIB)

Efficient Image Resizing Using Finite Differences

A. Muñoz Barrutia, T. Blu, M. Unser

Proceedings of the 1999 Sixth IEEE International Conference on Image Processing (ICIP'99), 神戸市 (Kobe), Japan, October 25-28, 1999, vol. III, pp. 662–666.

We present an optimal spline-based algorithm for the enlargement or reduction of digital images with arbitrary scaling factors. A demonstration is available on the web at http://bigwww.epfl.ch/demo/jresize/. This projection-based approach is realizable thanks to a new finite difference method that allows the computation of inner products with analysis functions that are B-splines of any degree n. For a given choice of basis functions, the results of our method are consistently better that those of the standard interpolation procedure; the present scheme achieves a reduction of artifacts such as aliasing and blocking and a significant improvement of the signal-to-noise ratio. 

@INPROCEEDINGS(http://bigwww.epfl.ch/publications/munoz9901.html,
AUTHOR="Mu{\~{n}}oz Barrutia, A. and Blu, T. and Unser, M.",
TITLE="Efficient Image Resizing Using Finite Differences",
BOOKTITLE="Proceedings of the 1999 Sixth {IEEE} International Conference
	on Image Processing ({ICIP'99})",
YEAR="1999",
editor="",
volume="{III}",
series="",
pages="662--666",
address="Kobe, Japan",
month="October 25-28,",
organization="",
publisher="",
note="")

© 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.