There are measure and drawing tools available in Agisoft Viewer. You can measure distances on the model and also check the surface area and volume of the reconstructed 3D model. All tools are available on the Toolbar or from the Tools menu:
Measurements in Agisoft Viewer are made in meters. The following measure tools are available in Agisoft Viewer:
- Calculate Profile
- Measure Volume
To measure a distance on the model select Ruler tool on the toolbar and choose the distance you'd like to measure by left-clicking on two endpoints. The measured distance will appear in the rectangle next to the second of the endpoints.
To build a profile select Calculate Profile tool on the Toolbar and draw a polyline to set the profile guideline. Click the left mouse button to start drawing and the right mouse button (or press Esc) to end the polyline. The profile will appear in the Measure Profile pop-up window as shown in the animation below.
If the loaded raster (DEM) appears to be loaded as RGB image instead of floating point single-channel elevation data then profile is measured according to the low resolution base map layer. It could happen, if you use Raster Transform > Palette option in the Export DEM dialog from Metashape project.
The profile can be saved by pressing Save button (as highlighted on the image below). The range of supported formats includes vector formats: KML, SHP, DXF; and raster formats: JPEG, JPEG 2000, PNG, TIFF, BMP, OpenEXR, TARGA.
To measure a volume a bounding area should be set first. Select Measure Volume tool on the Toolbar and draw a polyline to indicate the bounding area. Start drawing by clicking the left mouse button to create the first point of the polygon, then draw the bounding area as demonstrated in the image below. To automatically close the polygon click the right mouse button (or press Esc). The Measure Volume pop-up window will appear as shown on the image below.
In Boundary section of the Measure Volume window the following information for the bounding area is available:
- Longitude, Latitude, and Altitude for the vertices of the bounding area.
- Perimeter, 2D (Altitude value is not used for calculation).
- Perimeter, 3D.
- Area, 2D.
- Coordinate system used in the project.
In Volume section, it is possible to choose a preferable Base plane for volume calculation. Options include Best fit plane, Mean level plane, and Custom level plane. Best fit and mean level planes are calculated based on the altitudes of the bounding polygon vertices. Volume measured against custom level plane allows tracing volume changes for the same area in the course of time. The Level is set by the user in the corresponding box. Update button should be pressed for the Volume to be re-calculated against the set level.
Volume is calculated Above set level and Below set level, also Total volume value is calculated according to the following formula: Total volume = Volume above - absolute value of the Volume below
Volume measurement and profile creation are also available from the polyline/polygon context menu.
Drawing tools are available only in a vector layer, therefore to start drawing you need to either add a new vector layer or import a shape layer for the project. To create a vector layer use New Vector Layer button on the Layers pane or the corresponding option in File menu.
The shape properties are specified on the Properties tab available from View > Panes > Properties. The properties displayed on the Properties tab are for the selected shape. To select a shape click on the corresponding polygon/polyline/point in the project window. You can set Label, Description, and Layer name in the Properties dialog window.
To add an attribute for shape, click Add Attribute button on the Properties pane. To edit an attribute, double-click on the corresponding field with the left mouse button.
To set properties for layer select Properties command in the layer context menu. In Shape Layer Properties setting Label, Color, Transparency for the selected shape, also Show shape labels parameter can be enabled/disabled.