tancredosouza commented 7 years ago

I've extracted the camera's intrinsic parameters using the first method. However, when I try to use the camera_chessboard_data.dat and camera_0_calib.yaml files to obtain the extrinsic parameters, it returns an error.

To explain the folder hierarchy: the dataset folder inside build has the (1) calib folder with the camera_0_calib.yaml file, the (2) calibration_data and (3) data used, respectively, for the output and the working data, and the (4) input folder, which contains the same .png chessboard images used for intrinsic calibration and parameters extraction, named camera_0_X.png.

Here is the command line I'm writing: bin/extrinsic_calib --calib /home/camodocal/build/dataset/calib --camera-count 1 --output /home/camodocal/build/dataset/calibration_data/ --input /home/camodocal/build/dataset/input --data /home/camodocal/build/dataset/data --event /home/camodocal/build/dataset/input/camera_chessboard_data.dat

Here is the return: `# INFO: Initializing... Read /home/camodocal/build/dataset/input/camera_chessboard_data.dat file to get all the events

INFO: Initialization finished!

INFO: Running camera-odometry calibration for each of the 1 cameras.

ERROR: No segments, calibration fails!!

INFO: Calibrating odometry - camera 0...

Rotation: 6.9117e-310 6.91165e-310 6.9117e-310 6.9117e-310 6.91165e-310 7.90505e-323 6.91165e-310 6.91165e-310 6.91165e-310 Translation: 2.52962e-321 0 6.9117e-310

INFO: Completed camera-odometry calibration for all cameras.

INFO: Saving intermediate data... Done. Took 0.00s.

INFO: Running camera rig calibration.

WARNING: Logging before InitGoogleLogging() is written to STDERR E0510 17:29:24.825707 4409 solver_impl.cc:354] Problem contains no parameter blocks. Segmentation fault (core dumped) `

Sorry if this is a very silly question, and thank you for your attention.