Camera Calibration Targets

Creating Your Own

BoofCV provides an application for generating your own custom calibration target. You can size the pattern for your specific application on any sized paper. First you need to build the applications, see below:

cd boofcv
./gradlew applicationsJar
java -jar applications/applications.jar CreateCalibrationTarget

The last line above will run the application with no arguments. This will print out up to date instructions. At the end of the instructions are examples for each target type on letter sized paper. If you wish to have a GUI when creating your calibration target add the --GUI flag. The GUI doesn't have all the options which the commandline has.

java -jar applications/applications.jar CreateCalibrationTarget --GUI

• Video demonstration of command-line
• Video demonstration of GUI Application

Downloadable Targets

Printable Calibration Targets: US Standard Paper

Link	Target Type	Paper Size	Shape	Square/Circle Size
	Chessboard	Letter	7 by 5	3cm
	Square Grid	Letter	5 by 4	w=3cm s=2cm
	Circle Hexagonal Grid	Letter	20 by 24	diam=1cm, d=1.5cm
	Circle Regular Grid	Letter	17 by 12	diam=1cm, d=1.5cm

Printable Calibration Targets: Metric

Link	Target Type	Paper Size	Shape	Square/Circle Size
	Chessboard	A4	9 by 6	3cm
	Square Grid	A4	6 by 4	w=3cm s=1.5cm
	Circle Hexagonal Grid	A4	20 by 24	diam=1cm, d=1.5cm
	Circle Regular Grid	A4	18 by 12	diam=1cm, d=1.5cm

• Shape for chessboard includes black and white squares
• Shape for square grid is only the black squares

WHEN PRINTING THE CALIBRATION GRID MAKE SURE YOUR PRINTER DOES NOT RESCALE THE DOCUMENTS!
Failure to do so will cause intrinsic parameters to be off by a scale-factor. Measure with a ruler to make sure each square is 30mm wide