The point pattern matching algorithm based on the spectral method performs poorly when the two point patterns to be matched are not isomorphic.
当两个要匹配的点模式不同构时，以谱方法为基础的点模式匹配算法性能较差。
Great achievements in some aspects such as pure pixel extraction, spectral unmixing, matched filtering and spectral feature fitting have been made.
在纯净像元提取、混合像元分解、匹配滤波、光谱特征拟合等方面进行了探索。
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