Intersection over Union (IoU) for object detection - PyImageSearch

Today's blog post is inspired from an email I received from Jason, a student at the University of Rochester. Jason is interested in building a custom object detector using the HOG Linear SVM framework for his final year project. He understands the steps required to build the object detector well enough -- but he isn't sure how to evaluate the accuracy of his detector once it's trained. His professor mentioned that he should use the Intersection over Union (IoU) method for evaluation, but Jason's not sure how to implement it. My email really helped Jason finish getting his final year project together and I'm sure he's going to pass with flying colors.