透视变换代码 除了3*3矩阵和三个控点变为四个控点外，透视变换在其他方面与仿射变换完全类似-Perspective transformation code in addition to 3* 3 matrix and the three control points into four control points, the perspective transformation in other areas with similar affine transformation complete

利用已有的摄像头内外参数，将侧视图通过透视变换转换为俯视图，并保存所得到的单应性矩阵H，内含运行实例-Use of existing internal and external camera parameters, the side view through the perspective transformation into top view, and save the resulting homography matrix H, containing a running instance

实现了图像的简单拼接。首先寻找特征点，然后计算描述子（特征向量），对寻找到的特征点进行匹配，并塞选匹配结果，然后计算透视 矩阵，将其中一幅图进行透视变换，然后将图片合成。对一些简单的图片比较有效。仅供参考学习。(Realize the simple stitching of the image. First, find the feature point, and then calculate the descr iptor (eigenvector), match the feature po