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低空遥感是遥感影像数据获取的重要手段之一,点特征是最常用的影像特征,目前存在多种点特征提取算法。本文根据低空遥感数字影像的特点和实际应用中的要求,利用探测速度、适应性、提取效能三个特征提取算法的比较标准对常用的点特征提取算子进行了比较。为针对不同特点的低空遥感数字影像,选择某点特征提取算法提供依据。
Low-altitude remote sensing is one of the most important means of remote sensing image data acquisition. Point features are the most commonly used image features. There are currently many point feature extraction algorithms. Based on the characteristics of low-altitude remote sensing digital images and the requirements of practical applications, this paper compares the commonly used point feature extraction operators with the comparison standards of three feature extraction algorithms: detection speed, adaptability and extraction efficiency. For different characteristics of low-altitude remote sensing digital images, select a feature extraction algorithm provides the basis.