For example, I have a picture like the one above. I want to crop out the three red areas into three new pictures, and convert them into a new UIImage object or save them to the album. , how to deal with it will be easier? (The red frame is for demonstration only, the actual picture does not have obvious red frame mark)
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Put the frame in the array and then loop it?