Tracking Table
The Tracking Table provides an interactive table view of motion tracking measurement data in your images. Click on this tool to display the Data Table window at the bottom of the application workspace.
The Tracking Table window shows measurement data for each track in the active image. The various measurements it provides for each trace depends on what has been selected through the Types tool in the Measurements group on the Motion Tracking tab. Click here for more information on selecting measurements. The Data Table window has several interactive features:
- Resize columns. You can resize the columns for a better fit to the displayed values or to hide columns that are not of interest.
- Rename labels. You can edit the name of a feature by clicking on the name in that feature’s grid row and typing the new name.
- Delete measurements from the table. It is possible to delete a measurement by clicking on the row number (which selects the row) and pressing the <Del> key, or clicking the Delete button in the Measurements toolbox. Multiple rows can be selected in the table by holding down the <Ctrl> or <Shift> keys while clicking on the row numbers.
- Display selected measurements. You can select measurements of interest in either the table or the image, and then click on the Show Selected tool to hide all other measurement data in the table. Multiple rows can be selected in the table by holding down the <Ctrl> or <Shift> keys while clicking on the row numbers.
- Selected measurements are highlighted in the table and the image simultaneously. Whether one or multiple measurements are selected, the selections are always synchronized between the table and the overlays in the image.
The buttons on the Data Table are as follows:
Load: Allows you to load manual measurements that have been previously saved to a file.
Save: Allows you to save the current collection of manual measurements to a file.
Send to: Click on this button to tell Image-Pro to export the current measurements to a file. Click on the arrow to the right of this button to select the destination for exported data. You can choose to export it to an Excel spreadsheet or to a text file.
Statistics: Shows/hides the statistics table that appears below the table of measurement data.
Show All Measurements: If this button is selected, both selected and unselected measurements are shown in the measurements table
Show Selected Measurements: If this button is selected, only selected measurements are shown in the measurements table.
Show Unselected Measurements: If this button is select, only unselected measurements are shown in the measurements table.
Reference Track: This control sets the currently-select track as the Reference Track. The values of all other tracks will be corrected by subtracting from them the corresponding values of the Reference Track. Typically, the Reference Track feature is used to correct for geometrical position errors due to camera shifts during acquisitions or to correct for optical density errors -- for example, background correction.
Normalization Track: This control sets the currently-select track as the Normalization Track. The values of all other tracks will be normalized by dividing them by the corresponding values of the Normalization Track (after correction is done according to the Reference Track). Typically, the Normalization Track feature is used for bleaching correction.
Split Track: Use this control to split tracks that were mistakenly merged into one. To split a track, go to the frame of the sequence file where you want to split the track, and click on the Split Track tool.
Merge Tracks: This control merges the selected tracks into a single track, interpolating point positions in gaps between the tracks and averaging coordinates where tracks are overlapped.