Chapter 6. App 4 – Automatic Selfie

In this chapter, we will start working on a new application. The goal of the application is to be able to take a selfie without touching your phone's screen. Your application will be able to detect a certain hand gesture that will trigger the process of saving the current camera frame.

The topics that we will cover will include the following:

• Cascade classifiers used for object detection
• Using OpenCV to manipulate camera frames
• Using a trained cascade classifier to detect objects