Free tools · runs in your browser · open source

Free tools. Serious targets.

Pattern generator

Checkerboard, ChArUco, AprilGrid, circles. Print-exact PDF plus OpenCV, Kalibr and ROS config files.

Generate →

FOV & resolution calculator

Sensor, lens and working distance in — field of view, mm per pixel and target size out.

Calculate (coming soon) →

Target selection wizard

Five questions, one recommendation: pattern, size, material.

Start (coming soon) →

Format converter

OpenCV ↔ ROS camera_info ↔ Kalibr ↔ HALCON ↔ COLMAP intrinsics.

Convert (coming soon) →

Detection check

Upload a photo of your board and see what the detector finds.

Check (coming soon) →

Calibration quality analyzer

Coverage heatmap, reprojection error, parameter correlation — in your browser.

Analyze (coming soon) →