Computer Vision Applications with OpenCV using Python 3

How to run a smile detection program from a webcam

1. Download the Face and Smile Haarcascades to your machine

• face: https://github.com/opencv/opencv/blob/master/data/haarcascades/haarcascade_frontalface_default.xml

• smile: https://github.com/opencv/opencv/blob/master/data/haarcascades/haarcascade_smile.xml

2. Copy the file paths of both face and smile cascades and update the string in lines 4 and 5 of detect_smile.py

3. Finally, run the command

python3 detect_smile.py

Prerequisites

• Webcam
• Python 3
• OpenCV

OpenCV Tutorials

https://docs.opencv.org/3.4.3/d7/d8b/tutorial_py_face_detection.html https://docs.opencv.org/3.4.3/dc/d88/tutorial_traincascade.html

Python Installation Guides

https://www.python.org/downloads/ https://realpython.com/installing-python/

Contributing

Have an optimization, idea, suggestion, bug report? Pull requests greatly appreciated!