Calitar — Calibration Pattern Designer

Calibration patterns for your camera.

Create print-ready Checkerboard, Circle Grid, and ChArUco targets.

Checkerboard

Circle Grid

ChArUco

Use this designer for prototyping and testing only. Generated patterns are not reliable for production environments.

Layout

Board Type The Radon pattern can be used with OpenCV's sector-based checkerboard detector, findChessboardCornersSB.

Grid Size

Columns (squares)

Rows (squares)

Dimensions

Square Size (mm)

White Border Margin (mm)CALITAR recommends a quiet border roughly one square wide.

Layout

Grid Type Asymmetric grids resolve the 180° pose ambiguity symmetric grids can have.

Columns

Rows

Dimensions

Circle Radius (mm)

Spacing (mm)

White Border Margin (mm)

Grid Size

Squares X

Squares Y

Dimensions

Square Size (mm)

Marker Size (mm)

Starting Marker ID

White Border Margin (mm)

Show marker ID labels

Markers use OpenCV's real DICT_5X5_1000 ArUco dictionary (5×5 bits, minimum Hamming distance 5). Boards with more than 1000 markers wrap IDs around; keep marker counts under 1000 for direct cv2.aruco compatibility.