CIDetector not detecting proper Rectangle in iOS?

Question

I am trying to detect a Rectangle using CIDetector.

I am using code from this: https://www.cocoacontrols.com/controls/vnimagescanner

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Answer 1

Finally I got the an Open source library WeScan by WeTransfer to detect Rectangle/Document scanning and this give accurate result. I followed below link:

https://github.com/WeTransfer/WeScan