how to detect shapes in an image?

Question

I want to detect a circle, rectangle shaped object in an image and read the information from that object. Is there any api in java which will be helpful to me?

Ex: Detect a round shaped coin in a white background and obtain information about that that coin like ( value of a coin, etc.)

Thanks.

Answer 1

Here's an answer to a similar question for C++.

For Java, you can use the OpenCV wrappers. However, once you understand the essence of the approach you should be able to solve your problem using whichever framework is available.