General approach to developing an image classification algorithm for Dilbert cartoons

Question

As a self-development exercise, I want to develop a simple classification algorithm that, given a particular cell of a Dilbert cartoon, is able to identify which characters are

Answer 1

I think, in general, this is the correct approach and that there are two techniques you could have a look at.

• Eigenfaces, the name for all algorithms that use eigenvectors for facial recognition.
• The Bag-of-Words or visual words approach.