Grad-CAM

Grad-CAM implementation in Keras for saliency maps

References :

[1] Ramprasaath R. Selvaraju, Michael Cogswell, Abhishek Das, Ramakrishna Vedantam, Devi Parikh, Dhruv Batra

"Grad-CAM: Visual Explanations from Deep Networks via Gradient-based Localization"

https://arxiv.org/abs/1610.02391

[2] http://www.hackevolve.com/where-cnn-is-looking-grad-cam/

[3] https://www.youtube.com/watch?v=YwjDRw0MELw

I added comments to make the code understandable to everyone