Take a look at this photo:
Let's say you wanted to crop out the faces from this image and predict the ages based on the faces. You would use very similar code to what you used for your own classifier—the only difference is that you're going to use the faces classifier ID.
This is the code you used last time:
[code_1_classify_dogs.py]1. from ibm_watson.visual_recognition_v3 \2. import VisualRecognitionV33. 4. visual_recognition = VisualRecognitionV3(5. api_key="unBcJ-zq5gaguq7g6rQnpu9K-1ue8yKvoclgqMf7wMLx",6. version="2018-03-19")7. 8. with open('./example_goldenretriever.jpg', ...