perspective transformation

• 透视变换

perspective transformation的用法和样例：

例句

1. The relation between the convex quadrilateral and the rectangle was used to determine a homographic matrix.The perspective document image was rectified by the homographic matrix.
   应用这种凸四边形与矩形的对应关系可以确定透视变换的单应矩阵，应用该单应矩阵实现对透视文本图像的校正。