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/applications
gradle applicationsJar
java -jar 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.

Downloadable Targets

Printable Calibration Targetrs

Link	Target Type	Paper Size	Shape	Square/Circle Size
60px	Chessboard	Letter	7 by 5	30mm
Link	Chessboard	A4	8 by 5	30mm
Link	Chessboard	A1	12 by 8	60mm
60px	Square Grid	Letter	4 by 3	w=30mm s=30mm
Link	Square Grid	A4	5 by 3	w=30mm s=30mm
Link	Square Grid	A1	6 by 4	w=60mm s=60mm
link=http://boofcv.org/notwiki/calibration/letter_acircle.ps Link	Circle Asymmetric Grid	Letter	8 by 5	diam=2cm, d=6cm

• Shape for chessboard includes black and white squares
• Shape for square grid is only the black squares
• Square Grid patterns above have a 1 to 1 ratio between black squares and space between.

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