Double resolution from a set of aliased images

Patrick Vandewalle; Sabine Susstrunk; Martin Vetterli

doi:10.1117/12.526478

7 June 2004 Double resolution from a set of aliased images

Patrick Vandewalle, Sabine Susstrunk, Martin Vetterli

Proceedings Volume 5301, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V; (2004) https://doi.org/10.1117/12.526478
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

In this paper, we present a super-resolution method to approximately double image resolution in both dimensions from a set of four low resolution, aliased images. The camera is shifted and rotated by small amounts between the different image captures. Only the low frequency, aliasing-free part of the images is used to find the shift and rotation parameters. When the images are registered, it is possible to reconstruct a higher resolution, aliasing-free image from the four low resolution images using cubic interpolation. We applied our algorithm in a simulation, where all parameters are known and controlled, as well as in a practical experiment using images taken with a real digital camera. The results obtained in both tests prove the validity of our method.

Citation Download Citation

Patrick Vandewalle, Sabine Susstrunk, and Martin Vetterli "Double resolution from a set of aliased images", Proc. SPIE 5301, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V, (7 June 2004); https://doi.org/10.1117/12.526478

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