By clicking and dragging with the left mouse button, the handles of the grid widget can be translated, rotated and scaled, in order to test how well straight lines in the image have been undistorted.
通过点击和拖动使用鼠标左键，处理网格的小部件可以移动、旋转和缩放，为了测试直线在图像一直不失真。
2
At the receive end, we can not only get the undistorted range profile image, but also get some available conclusion by use of the crasis of the extent.
The experiment results show that although there is severe non-linear distortion in the source image , the perfect images can be obtained through the undistorted methods applied in this paper.