In this post I will explain how to find a crude approximation to the focal length of a webcam or cell phone camera ( i.e. fixed focal length cameras ) ...

## Configuring Qt for OpenCV on OSX

https://www.youtube.com/watch?v=SIXnD-9uh1k In this tutorial we will learn how to configure Qt to use OpenCV. Although the tutorial is targeted ...

## Rotation Matrix To Euler Angles

In this post I will share code for converting a 3x3 rotation matrix to Euler angles and vice-versa. 3D rotations matrices can make your head spin. ...

## Speeding up Dlib’s Facial Landmark Detector

In this tutorial I will explore a few ways to speed up Dlib's Facial Landmark Detector. Dlib's Facial Landmark Detector Dlib has a very good ...

## Warp one triangle to another using OpenCV ( C++ / Python )

In this tutorial we will see how to warp a single triangle in an image to another triangle in a different image. In computer graphics people deal ...