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In this mini-experiment, I build a classifier that finds if the person(s) in a given image are happy or not.
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LICENSE Initial commit Apr 28, 2018 Make flask app use binary classification May 17, 2018

Happy or Not?

This is an ongoing work for emotion classifier. Currently, it predicts whether people in an image are happy or not. It could be one person or multiple.

It is based on transfer learning, utilizing Inception V3 model and last few layers have been trained over a set of images scrapped off from Instagram, for happy and non-happy (angry/sad/stressed) people. The images could contain one or more people. The model learns to about 80% validation accuracy, however is overfitting a bit right now.

As I said, it needs to be improved and incorporate more emotions.

How to use?

  1. Install the dependencies (pip install -r requirements.txt)
  2. Open the jupyter notebook inside experiments section, and run all the cells. On my macbook pro the training took about 45-50 minutes. So, have a coffee while it trains the first model.
  3. Run the flask app (python and navigate to localhost:5000 in your browser.
  4. Select the model from dropdown, and try inserting an image URL which contains happy / sad person(s) and click on 'Predict'.

The page would reload in few moments and show you both your image and project's prediction for it with confidence.

Project Structure

The jupyter notebook inside experiments folder walks through each step with documentation to reach the model.

The model(h5) file has not been attached to git because it was 200+ MB. However, all models go inside models directory. These are keras models that should be saved using'some_model_name.h5'). This meanst each model should be having its weights, architecture, loss and state of optimization stored in it.

The templates folder contains the jinja2 template which the flask app uses to showcase the html.

Lastly, is the flask front-end to test this project out! Remember, you need to go through the notebook once to first generate a model.

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