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The features extracted in the algorithm have included not only spatial but also spatial frequency information.
而且该特征结合了像素的空域和频域信息.
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We research on extracting multi - frequency information of magnetic abnormity and its application, starting from this aspect.
也正是从这一角度出发,开展了磁异常多频段信息的提取及应用研究工作.
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