CNN-based Face Alignment

I use mxnet(http://mxnet.io/) to predict 68 facial feature points which is used in 300W (http://ibug.doc.ic.ac.uk/resources/300-W/).

Train

1. I assume that mxnet is installed.
2. You need to download training (LFPW, AFW, HELEN, and IBUG) and test images from 300W , and they are stored in 'original_images' directory.
3. You need to prepare record for mxnet.
   • To generate normalized images from training images, execute following command:

     $ cd prepare_data
     $ python collect_augmented_images.py

     Then, training_data.lst and test_data.lst are created.

• To create record file, you execute 'im2rec' command in mxnet. Before execute following commands, place 'im2rec' file exactly in 'prepare_data/im2rec.sh'

  $ cd prepare_data
  $ sh im2rec.sh

  Then, training_data.rec, test_data.rec are created.

4. You can train CNN for facial feature point estimation.

   $ cd ../mxnet
   $ sh train_net.sh

   You can see several parameters in train_net.sh.

In this repository, I added two networks : vgg16 (mxnet/symbols/vgg_16_reduced.py) and inception with batch normalization (mxnet/symbols/inception_bn.py)

5. After training, you can see learning curves.

   $ python draw_result.py

   

Test

I assume that you trained vgg16 so that the related files(vgg_16_reduced-0050.params, vgg_16_reduced-symbol.json) are located in 'mxnet'.

1. I crop the face image by ground truth, then predict facial feature points.

   $ python test_net.py

   These are some examples.

2. Using opencv's face detector, cropped face is given to predict facial feature points.

   $ python predict.py