PolyU_Workshop_OpenCV_2020

Host : HKIESC-PolyU , PolyU Enginnering Club, PolyU Robotics Team
Presenter : @vinesmsuic (From PolyU Robotics Team)

This workshop will briefly introduce Computer Vision and OpenCV.
OpenCV is a robust library for processing images.

Prerequisite

• Have Python3 Installed
• Have PIP3 installed
• Basic knowledge of Python

Preparation

Download the Repo through git clone

$ git clone https://github.com/PolyU-Robocon/PolyU_Workshop_OpenCV_2020.git

or download the Repo hitting that Download ZIP Button.

Install the libraries needed (You need to first cd to the repo.)

$ pip3 install -U -r requirement.txt

In case the above code got error, try to install those dependencies on your own.

• opencv-python
• imutils
• opencv-contrib-python

For Windows/MacOS, you may use anaconda to get opencv Firstly, install anaconda , then type the commands:

$ conda install numpy
$ conda install -c conda-forge opencv
$ sudo pip3 install imutils
$ sudo pip3 install opencv-contrib-python

For Linux distro, use the below command to get opencv

$ sudo apt-get install python3-numpy
$ sudo apt install python3-opencv
$ sudo pip3 install imutils
$ sudo pip3 install opencv-contrib-python

Then run checking.py to verify installation (You need to cd to the scripts folder)

$ cd scripts
$ python3 checking.py 

You should see something like this:

---------------------------------------
My Python version is: 3.7.4
My OpenCV version is: 4.4.0
---------------------------------------

Now you should be able to run the other files.

Content

Notes

• lecturenotes.md - Conceptual notes.
• quicknotes.md - Explain python code.

Basics

• checking.py - check python and opencv versions
• webcam.py - start camera through opencv
• imagelayers.py - learn about the image layers
• colormasking - learn about masking
• colortracking.py - color tracker for learning color filtering
• colortrackingFull.py - brief introduction to imutil

Extra

• colorthresholder.py - color filter picker
• canny.py - cannyedge detection
• selectable-tracker.py - selectable object tracking using tracker

Demo Videos

• max_heli.mp4 - a short clip of 3D modelling. Author @vinesmsuic
• dvd.mp4 - a short clip of dvd screensaver. source from https://www.youtube.com/watch?v=3hc-GxV1BS8