https://github.com/jacobgil/keras-grad-cam

An implementation of Grad-CAM with keras
https://github.com/jacobgil/keras-grad-cam

deep-learning grad-cam keras visualization

Last synced: 4 days ago
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An implementation of Grad-CAM with keras

• Host: GitHub
• URL: https://github.com/jacobgil/keras-grad-cam
• Owner: jacobgil
• License: mit
• Created: 2016-10-23T22:17:43.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2019-04-08T13:54:56.000Z (over 5 years ago)
• Last Synced: 2024-02-15T10:32:42.192Z (9 months ago)
• Topics: deep-learning, grad-cam, keras, visualization
• Language: Python
• Size: 186 KB
• Stars: 652
• Watchers: 17
• Forks: 240
• Open Issues: 28
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
## Grad-CAM implementation in Keras ##

Gradient class activation maps are a visualization technique for deep learning networks.

See the paper: https://arxiv.org/pdf/1610.02391v1.pdf

The paper authors torch implementation: https://github.com/ramprs/grad-cam

This code assumes Tensorflow dimension ordering, and uses the VGG16 network in keras.applications by default (the network weights will be downloaded on first use).

Usage: `python grad-cam.py `

##### Examples

![enter image description here](https://github.com/jacobgil/keras-grad-cam/blob/master/examples/boat.jpg?raw=true) ![enter image description here](https://github.com/jacobgil/keras-grad-cam/blob/master/examples/persian_cat.jpg?raw=true)

Example image from the [original implementation](https://github.com/ramprs/grad-cam):  

'boxer' (243 or 242 in keras)

![](/examples/cat_dog.png)

![](/examples/cat_dog_242_gradcam.jpg)

![](/examples/cat_dog_242_guided_gradcam.jpg)

'tiger cat' (283 or 282 in keras)

![](/examples/cat_dog.png)

![](/examples/cat_dog_282_gradcam.jpg)

![](/examples/cat_dog_282_guided_gradcam.jpg)