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 亚像元定位技术是一种获取地物在混合像元中分布信息的有效方法。提出一种基于空间自相关函数的遥感影像BP神经网络亚像元定位方法,与传统的BP神经网路亚像元定位方法相比,该方法利用空间自相关函数Moran’sI在亚像素级上对定位结果进行约束,其结果更符合空间相关性假设理论。试验结果表明,该方法优于传统BP神经网络亚像元定位方法,具有更高的定位精度。 更多还原

【Abstract】 Sub-pixel mapping is an effective method to obtain the distribution of land cover in mixed pixels.A sub-pixel mapping algorithm based on an improved BP neural network with Moran’s I is proposed,it is a kind of spatial autocorrelation function,to constrain the distribution of sub-pixels to satisfy the concept of spatial dependence better than conventional BP neural network methods.The experimental results indicate that the proposed mapping algorithm outperforms the original BPNN model in terms of... 更多还原