write_cam_parT_write_cam_parWriteCamParwrite_cam_parWriteCamParWriteCamPar (Operator)

Name

write_cam_parT_write_cam_parWriteCamParwrite_cam_parWriteCamParWriteCamPar — Write internal camera parameters into a file.

Signature

Description

write_cam_parwrite_cam_parWriteCamParwrite_cam_parWriteCamParWriteCamPar stores the internal camera parameters CameraParamCameraParamCameraParamCameraParamCameraParamcameraParam into a file specified by its file name CamParFileCamParFileCamParFileCamParFileCamParFilecamParFile.

The number of values in CameraParamCameraParamCameraParamCameraParamCameraParamcameraParam depends on the specified camera type. See the description of set_calib_data_cam_paramset_calib_data_cam_paramSetCalibDataCamParamset_calib_data_cam_paramSetCalibDataCamParamSetCalibDataCamParam for a list of values and calibrate_camerascalibrate_camerasCalibrateCamerascalibrate_camerasCalibrateCamerasCalibrateCameras for details on camera types and camera parameters.

The default HALCON file extension for the camera parameters is 'dat'.

The internal camera parameters can be later read with read_cam_parread_cam_parReadCamParread_cam_parReadCamParReadCamPar.

Parallelization

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

Example (HDevelop)

* 
* Calibrate the camera.
* 
StartCamPar := ['area_scan_division', 0.016, 0, 0.0000074, 0.0000074, \
                326, 247, 652, 494]
create_calib_data ('calibration_object', 1, 1, CalibDataID)
set_calib_data_cam_param (CalibDataID, 0, [], StartCamPar)
set_calib_data_calib_object (CalibDataID, 0, 'caltab_30mm.descr')
NumImages := 10
for I := 1 to NumImages by 1
  read_image (Image, '3d_machine_vision/calib/calib_' + I$'02d')
  find_calib_object (Image, CalibDataID, 0, 0, I, [], [])
  get_calib_data_observ_contours (Caltab, CalibDataID, 'caltab', 0, 0, I)
endfor
calibrate_cameras (CalibDataID, Error)
get_calib_data (CalibDataID, 'camera', 0, 'params', CamParam)
* Write the internal camera parameters to a file.
write_cam_par (CamParam, 'camera_parameters.dat')

Result

write_cam_parwrite_cam_parWriteCamParwrite_cam_parWriteCamParWriteCamPar returns 2 (H_MSG_TRUE) if all parameter values are correct and the file has been written successfully. If necessary an exception is raised.

Possible Predecessors

camera_calibrationcamera_calibrationCameraCalibrationcamera_calibrationCameraCalibrationCameraCalibration

See also

find_caltabfind_caltabFindCaltabfind_caltabFindCaltabFindCaltab, find_marks_and_posefind_marks_and_poseFindMarksAndPosefind_marks_and_poseFindMarksAndPoseFindMarksAndPose, camera_calibrationcamera_calibrationCameraCalibrationcamera_calibrationCameraCalibrationCameraCalibration, disp_caltabdisp_caltabDispCaltabdisp_caltabDispCaltabDispCaltab, sim_caltabsim_caltabSimCaltabsim_caltabSimCaltabSimCaltab, read_cam_parread_cam_parReadCamParread_cam_parReadCamParReadCamPar, write_posewrite_poseWritePosewrite_poseWritePoseWritePose, read_poseread_poseReadPoseread_poseReadPoseReadPose, project_3d_pointproject_3d_pointProject3dPointproject_3d_pointProject3dPointProject3dPoint, get_line_of_sightget_line_of_sightGetLineOfSightget_line_of_sightGetLineOfSightGetLineOfSight

Module

Foundation