This paper describes a novel method for special textural aerial image matching based on PCA-SIFT.Images are down sampled and subsequently,PCA-SIFT feature matching is applied.The matched points are used to calculate the homography matrix and the corresponding areas are determined between stereo image pairs.PCA-SIFT is performed again on the corresponding areas to get more matching points,and gross errors are detected.Finally,an improved least square image matching method is implemented to refine the PCA-SIF...