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Erschienen in:
2014 | OriginalPaper | Buchkapitel
Analysis of Correlation Registration Algorithms in the Observation of Solar Magnetic Field
verfasst von : Jie Chen, Kaifan Ji, Hui Deng, Song Feng
Erschienen in: Unifying Electrical Engineering and Electronics Engineering
Verlag: Springer New York
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Abstract
This study compared and analyzed the image registration algorithms of phase correlation and cross-correlation for obtaining high SNR images. By processing both the simulated and measured images, five statistics to evaluate the results of the processing were chosen, which are the mean and variance of the difference images, the maximum correlation value of registration images, entropy of accumulated images, and energy of the magnetic images. It was concluded that the phase correlation algorithm was more sensitive to noise than cross-correlation, and the cross-correlation algorithm was more suitable for the real-time processing of solar magnetic field images.