A very simple ncurses application to simplify OpenCV camera calibration

Sample Interface

Make sure you have OpenCV and numpy installed
Tested on Ubuntu 18.04, Python 3.6 with numpy = 1.18.1 and OpenCV = 4.4
This should work with the latest versions

Config can be edited in > main.py

outpath is the directory where raw and undistorted images would be saved
crop_dist is whether or not undistorted images would be edged cropped
cparams_fn resulting numpy config file name
pattern_size number of chess board vertices in horizontal or vertical direction (interchangable)
square_size chessboard block length (I guess a placeholder value should be fine in our use case)
gray_images gray or color output images
dataset uses a generator class to loop through new images, default value is 0 => /dev/video0

python main.py

The script will auto detect chessboards each frame and label them on the display screen
Make sure you have configured pattern_size correctly

Add as many values as you want then press 'q' to escape to calculate the calibration parameters

NOTE: Keyboard input should be aimed at the ncurses terminal not the camera terminal