Feature Description

The Camera Point Offset feature allows moving rectified datasets to their corresponding positions on the map. Due to distortions in camera-captured videos or images - which typically exhibit minimal distortion at the shooting center and increasing distortion towards the edges - along with influences from shooting distance and pitch angle, rectified video datasets can only achieve complete alignment with the map in specific local areas. When the current aligned area doesn't match user requirements, this feature enables global adjustment of video datasets to target areas needing precise alignment.

Feature Entry

• Video Registration tab->Camera Parameter Conversion group->Camera Point Offset.

Steps

Operation procedure for Camera Point Offset:

1. Add rectified video dataset and map to the map window
2. Right-click data in the map and select Pick Coordinates to collect coordinate information from characteristic points in both the map and video dataset. View picked coordinates in the Output Window.
3. Calculate X/Y offsets by subtracting video dataset feature point coordinates from map feature point coordinates.
4. Click Camera Point Offset in Video Registration tab->Camera Parameter Conversion group, then configure parameters in the dialog:
   • Camera Pose File: Specify camera pose file for video data. Refer to Camera Parameter Registration Example for acquisition methods.
   • X: Select X coordinate field based on camera pose file information.
   • Y: Select Y coordinate field based on camera pose file information.
   • X Offset: Enter calculated X offset value.
   • Y Offset: Enter calculated Y offset value.
5. After completing parameters, click OK to generate a new CSV file containing corrected camera parameters. Use this file for subsequent camera parameter registration.

Related Topics

Import Camera Parameters

Import Subtitle File

Calibration Registration

Camera Parameter Registration Example

SuperMap UAV Survey Video Registration