iphone如何区分不同形状
我想写一个程序，它可以自动区分不同的形状。例如，我用手指在iphone屏幕上画一个正方形，当我的手指离开屏幕后，程序可以告诉我图形的形状是“正方形”，而不是“菱形”或“圆形”等等在。 现在我只希望程序能够区分一些基本图形，比如“矩形”“正方形”“圆形”“椭圆”“三角形”和“菱形”。算法不太懂，如果有案例可以参考那就最好了！
I want to write a program, it can distinguish different shape automatically. For example, I use my finger draw a square on the screen of iphone, and after my finger leaves the screen, the program could tell me the shape of the graph is "square", but not "diamond" or "circle" and so on.
Now I only hope the program could distinguish some basic graphics, just like "rectangle" "square" "circle" "ellipse" "triangle" and "diamond". I don't quite understand the algorithm,if there are some cases as reference, that's the best thing!
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有多种方法可以做到这一点；但你基本上所做的是手写识别。这通常使用神经网络；这就是我要开始的地方。
可以在这里找到大量资源链接：
从哪里开始使用神经网络进行手写识别？
There are a number of ways of doing this; but what you're basically doing is handwriting-recognition. This normally uses neural-networks; that's where I would begin.
A fair number of links to resources can be found here:
Where to start Handwritten Recognition using Neural Network?