The Method of Round Image Matching Based on Log-Polar Transform*

Zhi Jia Zhang; Jing Chen

doi:10.4028/www.scientific.net/KEM.467-469.1024

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 467-469The Method of Round Image Matching Based on...

The Method of Round Image Matching Based on Log-Polar Transform*

Abstract:

Traditional image matching methods are not proper for the situation of the angle rotation. Aiming at this problem, This paper proposes an round image matching method based on log-polar transform. Log-polar image transform can convert the rotation changes in Descartes coordinate to shift changes in log-polar coordinate, which had such trait as invariance to rotation. Results show that this algorithm based on log-polar transform can match the images with rotation changes, Compared with existing algorithms, the new algorithm not only had higher matching rate and stronger adaptability, but also can effectively solve matching problem under the circumstance of brightness changes, contrast changes or noise interferences.

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Periodical:

Key Engineering Materials (Volumes 467-469)

Pages:

1024-1029

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.467-469.1024

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Online since:

February 2011

Authors:

Zhi Jia Zhang, Jing Chen

Keywords:

Log-Polar Transform, Rotation Invariance, Round Image Matching

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