In this chapter, we built a new application to take automatic selfies based on the famous cascade classifier. We've seen what a cascade classifier is built of starting from the type of features used to the adaptive boosting learning algorithm and cascading. You also learned how to initialize and use a multiscale sliding window-based detector with an already trained classifier to detect closed palm hand gestures and use these detections as cues to capture frames from the device's camera.

Get OpenCV Android Programming By Example now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.