[OTCamera] gives you the opportunity to receive distinctive camera parameters. These include intrinsics, extrinsics and distortion coefficients. By using our web browser based program and multiple images of a calibration pattern, like a chessboard you can calculate a camera matrix and distortion coefficients. You will be able to evaluate your calibration with a reprojection error which is used to quantify how closely you can recreate true projection. In other words: You can undistort pictures, trajectories or any other pixel coordinates.
- First you need to download a chessboard pattern (you can search for calibration board).
- The pattern size and dimension will play no big role for now, so feel free to use any chessboard.
- Attach your printout to a solid object. The image should be as flat as possible.
- For best results its unavoidable to let your calibration pattern be manufactured by professionals.
- Start the calibration application on your raspberrypi.
- Create a new calibration with a self-chosen CamID.
- Enter the number of chessboardcolumns, -rows and the squaresize in mm.
- Choose a number of wanted successful calibration pictures and resolution.
- Start the calibrationprocess.
- By clicking on "receive coefficients" your camera parameters will be stored as json-file on your raspberrypi.
- Evaluate the reprojection error displayed in the userinterface.