CameraCalibrations

This is a package for camera calibration in Julia.

How to install

] add CameraCalibrations

How to use

First we build the calibration object based on the files: the image files of the checkerboard, n_corners: the number of inner corners in each of the sides of the checkerboard, and checker_size: the physical size of the checker (e.g. in cm).

using CameraCalibrations
c = fit(files, n_corners, checker_size)

Then we can use that object to calibrate pixel coordinates and/or images, given the extrinsic image we want to refer to:

i1 = RowCol(1.2, 3.4) # a cartesian index in image-pixel coordinates
xyz = c(i1, 1) # convert to real-world coordinates of the first image
i2 = c(xyz, 1) # convert back to pixel coordinates
i2 ≈ i1 # true

Features

• saving and loading (JSON) calibration files
• corner detection is done with opencv
• model fitting is done with opencv
• opencv is python-free
• plot calibrated images
• in-memory images
• images from video IO

Citing

See CITATION.bib for the relevant reference(s).