extracting corner information的用法和样例：
例句
- Invariant corner detection is a most important preprocessing step for image shape classification and recognition.
摘要在图像形态分类与识别系统中，不变性角点检测是很重要的预处理环节。 - The method based on corner detecting combined with image matching is used to get the coordinates of the end executor of the manipulation arm in the image coordinate system.
采用角点检测和图像匹配相结合的方法来获取机械臂末端执行器在图像坐标系中的坐标。
