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Comparison of Various Frequency Matching Schemes for Geometric Correction of Geostationary Ocean Color Imager

机译:地静止海洋彩色成像仪几何校正频率匹配方案的比较

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摘要

Current precise geometric correction of Geostationary Ocean Color Imager (GOCI) image slots is performed by shoreline matching. However, it is troublesome to handle slots with few or no shorelines, or slots covered by clouds. Geometric correction by frequency matching has been proposed to handle these slots. In this paper, we further extend previous research on frequency matching by comparing the performance of three frequency domain matching methods: phase correlation, gradient correlation, and orientation correlation. We compared the performance of each matching technique in terms of match success rate and geometric accuracy. We concluded that the three frequency domain matching method with peak search range limits was comparable to geometric correction performance with shoreline matching. The proposed method handles translation only, and assumes that rotation has been corrected. We need to do further work on how to handle rotation by frequency matching.
机译:目前通过海岸线匹配来执行地静止海洋彩色成像器(Goci)图像槽的电流精确几何校正。然而,处理少数或没有覆盖物的插槽或云层覆盖的插槽是麻烦的。已经提出了通过频率匹配的几何校正来处理这些插槽。在本文中,我们通过比较三个频域匹配方法的性能:相位相关,梯度相关性和方向相关性,进一步扩展了先前的频率匹配研究。我们在匹配成功率和几何准确性方面进行了每个匹配技术的性能。我们得出结论,具有峰值搜索范围限制的三个频域匹配方法与海岸线匹配的几何校正性能相当。所提出的方法仅处理转换,并假设已经纠正了旋转。我们需要进一步处理如何通过频率匹配来处理旋转。

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