Swap Visible Image Line
Swap Visible Image Line tool switches the visibility of thumbnail images per line interactively. The thumbnail image must be displayed with the Display mode command.
The tool relies on line numbers stored for images. Line numbers can be derived from trajectory lines using the Deduce Line Numbers command. They can also be defined manually using the Edit command.
The tool is useful, for example, for comparing images of several lines that cover the same area. This is a typical scenario for mobile ground-based projects in a city where roads were driven several times. It may be used in combination with the Set Image Quality tool. Swap the visibility of lines to see which line covers an area best or which line has the best image quality.
To swap the visibility of lines:
1. Assign line numbers to images.
2. Display thumbnails using the Display mode command for images.
3. Select the Swap Visible Image Line tool.
4. Place a data click inside a CAD file view.
This switches on the display of thumbnails of the line with the lowest line number in the current view extend. The display of all other lines is switched off.
5. Place another data click inside the CAD file view.
This switches on the display of thumbnails of the line with the next-higher line number and all other lines off.
Repeat step 5 in order the swap the visibility of image thumbnails per line.
6. Place a reset click inside the CAD file view in order to display thumbnails of all lines again.
The tool recognizes thumbnails with the lowest line number in the current view extend. Therefore, it might be useful to zoom in at the location of lines that you want to compare.
