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Authors: Stéfan van der Walt and Ben Herbst

Affiliation: University of Stellenbosch, South Africa

ISBN: 978-972-8865-73-3

Keyword(s): Geometry, interpolation, registration, image-processing, astronomy, log-polar transform.

Related Ontology Subjects/Areas/Topics: Computational Geometry ; Computer Vision, Visualization and Computer Graphics ; Feature Extraction ; Features Extraction ; Image and Video Analysis ; Image Filtering ; Image Formation and Preprocessing ; Image Formation, Acquisition Devices and Sensors ; Image Quality ; Image Registration ; Informatics in Control, Automation and Robotics ; Multimodal and Multi-Sensor Models of Image Formation ; Signal Processing, Sensors, Systems Modeling and Control

Abstract: A polygon-based interpolation algorithm is presented for use in stacking RAW CCD images. The algorithm improves on linear interpolation in this scenario by closely describing the underlying geometry. 25 frames are stacked in a comparison. When stacking images, it is required that these images are accurately aligned. We present a novel implementation of the log-polar transform that overcomes its prohibitively expensive computation, resulting in fast, robust image registration. This is demonstrated by registering and stacking CCD frames of stars taken by a telescope.

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Paper citation in several formats:
van der Walt S.; Herbst B. and (2007). METHODS USED IN INCREASED RESOLUTION PROCESSING - Polygon Based Interpolation and Robust Log-polar Based Registration.In Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, ISBN 978-972-8865-73-3, pages 135-140. DOI: 10.5220/0002060501350140

@conference{visapp07,
author={Stéfan {van der Walt} and Ben Herbst},
title={METHODS USED IN INCREASED RESOLUTION PROCESSING - Polygon Based Interpolation and Robust Log-polar Based Registration},
booktitle={Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP,},
year={2007},
pages={135-140},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002060501350140},
isbn={978-972-8865-73-3},
}

TY - CONF

JO - Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP,
TI - METHODS USED IN INCREASED RESOLUTION PROCESSING - Polygon Based Interpolation and Robust Log-polar Based Registration
SN - 978-972-8865-73-3
AU - van der Walt, S.
AU - Herbst, B.
PY - 2007
SP - 135
EP - 140
DO - 10.5220/0002060501350140

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