To use manual tie points in an alignment, they must be created and measured in the images that will contain them using the Image Measurements tool on the Alignment tab.
Create and measure manual tie points
To create and measure a manual tie point, complete the following steps:
- In the Project Tree pane, select the alignment containing the manual tie point you want to create and measure and click the Alignment tab.
- On the Alignment tab, click Image Measurements
.The Image Measurements view appears.
- On the Image Measurements view, click the Manual Tie Points tab.
- In the Globe view, press and hold the Ctrl key and click at the location where the point should be created.
- On the Image Measurements view, in the Manual Tie Points table, click the row number of a manual tie point you want to measure.
The manual tie point appears in the Manual Tie Points list, the image candidates appear in the Image table, and the first image appears in the Image viewer.
Note:
If you don't want to use a manual tie point in the alignment, click Enable/Disable
to exclude the manual tie point from the alignment process. A crossed gray ring 
appears indicating the manual tie point is excluded from the alignment. Click Enable/Disable again to include the manual tie point in the alignment. - In the Image viewer, click the exact location of the manual tie point and go to the next image.
Note:
Repeat this step for all the image in the table. Alternatively, you can set one of the measurements as a template to request image measurement suggestions in the remaining images. You must make at least two image measurements for a manual tie point to be used in an alignment or to set an existing measurement as template.
Tip:
To change a measurement, you can click a new location in the image or remove the measurement by clicking the Remove button
on the toolbar. - To go to the next image, use keyboard shortcuts, click the navigation buttons on the toolbar, or click the image in the Image table.
- Repeat the previous steps for each manual tie point you want to include in the alignment.
The manual tie points are measured and ready to be used.
You can process the alignment once all the manual tie points have been measured.
Request image measurement suggestions
Image measurement suggestions are generated using an image template, the image orientations and the previous image measurements.
To request and use image measurement suggestions, complete the following steps:
- After two or more manual measurements are made, select one of the images with a measurement in the Image table and click Find Suggestions
on the toolbar.A template symbol
appears in the Image table, in the Status column. Suggestion symbols 
appear in the Status column where suggestions are generated. - Click the row of an image with a suggestion to see it in the Image viewer.
- Click Accept
or press the Spacebar to accept the suggestion.Note:
You can click Accept All
on the toolbar to accept all available suggestions. - Optionally, you can use a different image measurement as template to get more suggestions. To do so, select the new image in the Image table and click Find Suggestions on the toolbar.
New measurement suggestions are generated based on the new template.
Keyboard shortcuts
You can use keyboard and mouse shortcuts to navigate, browse, and measure points.
Navigation in 2D
Use keyboard shortcuts in the image viewers for help with navigating the images.
| Keyboard shortcut | Description |
|---|---|
Middle drag | Pan. |
Middle roll wheel | Zoom in and out. |
Right hold | Continuous zoom. |
Navigation in 3D
Use keyboard shortcuts in the globe viewers for help with navigating 3D scenes.
| Keyboard shortcut | Description |
|---|---|
Click | Identify features in a pop-up window. |
Click drag | Pan. |
Middle drag | Rotate and tilt the view. |
Middle roll wheel | Zoom in and out. |
Right hold | Continuous zoom. |
Image measurements
Use keyboard shortcuts in the Image viewer of the Image Measurements tool.
| Keyboard shortcut | Description |
|---|---|
Click | Make an image measurement. |
Shift+click | Remove an image measurement. |
Spacebar | Accept suggestion and go to next image. |
Browse tables
Use keyboard shortcuts for help with browsing tables in the Image Measurements tool.
| Keyboard shortcut | Description |
|---|---|
F | Go to next image in the Image table. |
B | Go to previous image in the Image table. |
Shift+F | Go to next point in the points table. |
Shift+B | Go to previous point in the table. |
Image measurement status
A manual tie point must have at least two image measurements to be included in the alignment process. The status of a manual tie point is represented by a symbol that indicates the number of images it has been measured in.
The image measurement status symbols indicate the following:
—A point has fewer than two image candidates and cannot be used in an alignment.
—A point has two or more image candidates but no image measurement.
—A point has two or more image candidates and one image measurement.
—A point has two or more image measurements, and there is at least one image candidate that is not measured.
—All image candidates have measurements.- —A disabled point that will not be used in alignment.