concept of readers and transforms

bob/learn/tensorflow/dataset/compose.py

bob/learn/tensorflow/np_transforms/Compose.py

bob/learn/tensorflow/np_transforms/__init__.py

bob/learn/tensorflow/np_transforms/transforms.py

bob/learn/tensorflow/readers/__init__.py

bob/learn/tensorflow/readers/generic.py

bob/learn/tensorflow/readers/label.py

bob/learn/tensorflow/readers/pad.py

bob/learn/tensorflow/readers/video.py

bob/learn/tensorflow/tf_transforms/__init__.py

bob/learn/tensorflow/tf_transforms/generic.py

bob/learn/tensorflow/tf_transforms/image.py