Lidar Toolbars

Activating the Lidar Module will add the Lidar Toolbar as an additional component to the Global Mapper User Interface.

Like other Global Mapper toolbars, this interface may be activated and deactivated in the View > Toolbars menu. See Toolbars Sub-Menu for more information on enabling toolbars and customization.

On the toolbar are options to change the draw or color mode, quickly classify or re-classify selected points, and auto-classify Lidar points.

Lidar

Drop-down

Lidar (Manual Classification)

Lidar Draw Mode

The Lidar Toolbar features a drop down menu for changing the draw or color mode of displayed lidar points, which allows users to easily select the display characteristics of the point cloud.

Automatic Classification

The automatic classification options available on the toolbar are:

Auto-Classify Noise Points

Can be used to automatically classify Noise points based on user-defined parameters.

Auto-Classify Ground Points

Specify the minimum height in meters (above the local average) that a point has to be in order to be considered a non-ground point.

Auto-Classify Non-Ground Points

Specify point spacing and threshold values such as Minimum Height, Vegetation Distance, and Maximum Co-Planar Distance to automatically classify non-ground point features.

Extract Vector Features

Extract building polygons, tree points or polygons, and/ or powerlines from classified Lidar data.

Create 3D Model from Selected Lidar Points

Convert the selected lidar points into a 3D mesh surface.

Additional Tools

Lidar QA - Compare/ Adjust Elevations to Control Points

Control points may be compared to nearby Lidar points. This tool reports the differences and RMSE between the control points and nearby LiDAR points. It can also be used to adjust the point cloud so the points match the control elevations.

Spatially Thin Lidar Layers

Delete Duplicate Lidar Points

Select Lidar by Distance

Filter Lidar Data

Allows the user to filter out Lidar points by Classification. Also allows for changing the color or classification groups of Lidar classes. See more information on changing the Class properties. Additional Advanced Filtering tools can be applied while running an auto-classification, or by selecting Lidar Points with the digitizer tool.

Apply Color to Lidar Points

Applies color values from loaded imagery to Lidar points based on X, Y location values. Color values can include R,G,B values from true color imagery, or values from multi-band imagery or raster calculations for LAS versions 1.4.

Manually Classifying Points

The Lidar Module also allows the user to manually classify or re-classify selected Lidar points. To use the classification buttons found on the Lidar Toolbar, select a group of lidar points with the Digitizer Tool and click on the button corresponding to the classification you wish to use.

The manual classification options available on the toolbar are:

Classify – Ground

Classify Selected Lidar Points – Ground

Classify – Vegetation Low

Classify Selected Lidar Points – Vegetation Low

Classify – Vegetation Medium

Classify Selected Lidar Points – Vegetation Medium

Classify – Vegetation High

Classify Selected Lidar Points – Vegetation High

Classify – Building

Classify Selected Lidar Points – Building

Classify – Wire (Conductor)

Classify Selected Lidar Points – Wire (Conductor)

Classify – Water

Classify Selected Lidar Points – Water

Classify – High Noise

Classify Selected Lidar Points – High Noise

Classify – Model Key-point

Classify Selected Lidar Points – Model Key-point