I am trying to detect the center&radius of an arc like shown below for my thesis by using open cv. I tried many things and searched a lot, but cant figure out. Could please somebody help me? I would be really glad.

[![https://i.stack.imgur.com/vjb8Z.png](https://i.stack.imgur.com/vjb8Z.png)](https://i.stack.imgur.com/vjb8Z.png)
[![https://i.stack.imgur.com/FTSHC.png](https://i.stack.imgur.com/FTSHC.png)](https://i.stack.imgur.com/FTSHC.png)