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Proceedings Paper

Using wavelets for edge directed image interpolation
Author(s): Eric P. Lam
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Paper Abstract

Resizing an image is an important technique in image processing. When increasing the size of the image, some details of the image are smeared or blurred with common interpolation techniques, such as bilinear interpolation. Edges do not appear as sharp as the original image. In addition, when performing interpolation with high magnification, blocking effects start to appear. In this paper, we present an approach that performs interpolation in the direction of the edges, rather than just horizontal and vertical direction. A wavelet preprocessing is used to extract edge direction information before performing interpolation in multiple directions.

Paper Details

Date Published: 15 September 2008
PDF: 8 pages
Proc. SPIE 7073, Applications of Digital Image Processing XXXI, 70731V (15 September 2008); doi: 10.1117/12.799275
Show Author Affiliations
Eric P. Lam, Thales Raytheon Systems (United States)


Published in SPIE Proceedings Vol. 7073:
Applications of Digital Image Processing XXXI
Andrew G. Tescher, Editor(s)

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