Essential information on loading and displaying point clouds in 90 seconds.

Topics Covered:

• Opening LAS files.
• Basic movement and display options (e.g., height color, intensity, point size)

Watch | Download (12Mb/mp4)

Essential information on loading and understanding your LiDAR data.

Topics Covered:

• Use indexing to inventory your LiDAR data and view coverage in Google Earth and ArcGIS
• Preview LiDAR file information.
• View LiDAR file statistics.
• Color by classification, return number, and other LAS attributes.
• Basic grid statistics to further understand composition and quality of data.

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Learn how to build a DEM from a classified LAS file in less than 2 minutes. While used loosely, the term "DEM" technically menas a ground surface (a.k.a., "Bare Earth") in which features like buildings and trees are removed. This quick methodology assumes that the original LAS file has been classified into categories such as "ground" and "vegetation" per the LAS specification.

Topics Covered:

• Importing LAS file to a surface model.
• Setting grid spacing.
• Filtering by LAS classifiaction.

Watch | Download (16Mb/mp4)

Learn how to build Digital Surface Models (i.e., a gridded surface model that includes features like buildings and trees) in less than 2 minutes.

Topics Covered:

• Import LAS point files into a gridded (i.e., raster) surface.
• Set grid size.
• Basic gridding and surface creation options.

Watch | Download (11Mb/mp4)

Introductory tutorial chapter that covers the very basics of point cloud viewing and manipulation.

Topics Covered:

• Loading point clouds into QTM.
• Display Settings: height color, intensity, lighting.
• Basic Manipulation: zoom, tilt, rotate, pan.
• Useful Point Cloud Visualization Options: setting point size, legends, axes (3D north arrow).
• Loading Multiple Models: show/hide models, flicker, remove models.
• Point Interrogation - querying individual point attributes.

Watch | Download (142mb/mp4)

Introductory tutorial chapter that covers the basics of DEM viewing and manipulation.

Topics Covered:

• Definitions: DEM/DTM vs. DSM.
• QTM's QTT surface model format.
• Loading DEM's, DSM, DTM's and other surface models into QTM
• Basic Manipulation: zoom, tilt, rotate, pan, reset view.
• Display Settings: height color, intensity, lighting.
• Useful DEM Visualization Options: legends, axes (3D north arrow).
• Loading Multiple Models: show/hide models, flicker, remove models.

Watch | Download (36MB/mp4)

This module covers the basics of creating a point cloud from an LAS file.

Topics Covered:

• Opening LAS files directly (i.e., no import process).
• LAS import window and choices.
• Data compression (an optional process).
• Processing options.
• Format options.
• Georegistration.
• LAS attributes in the point data record and the creation of the QTA attribute file.
• LAS attribute display.
• Point Query - displaying all LAS attributes of a given point.
• Filtering by LAS classification upon import.
• Merging choices: How to either merge LAS data sets into a single point cloud - or keep them separate - upon import.

Watch | Download (66MB/mp4)

This module covers the basics of creating a Surface Model (DEM, DTM DSM) from a LAS file.

Topics Covered:

• Choosing an appropriate grid size.
• Filtering options.
• Gridding options.
• Processing as a group (making one model from many LAS files).
• Surface subtraction (subtracting one surface from another
• Displaying point clouds and surface models simultaneously.
• Exporting surface model to GeoTIFF DEM to share with other applications.

Watch | Download (49MB/mp4)

This module covers the basics of overlaying 2D imagery (known as "textures" in QT Modeler terminology), cropping and downsampling of images, and creation of colorized point clouds and DEM's.

Topics Covered:

• Supported Imagery Formats (GeoTIFF, MRSID, ECW, NITF, etc.)
• Texture/image cropping options.
• Searching for imagery based on the extents of the loaded models.
• Sampling imagery color values onto point clouds and DEM's.
• Exporting colorized point clouds to LAS.
• Editing Textures.
• Downsampling.

Watch | Download (88MB/mp4)

This module covers measurement lines, terrain profiles, and other tools associated with measurement lines.

Topics Covered:

• Basic measurement lines.
• Terrain profiles.
• Specialized tools for point cloud profiles.
• Clipping the display to the profile line extents.
• Cross sections.
• Exporting directly to PowerPoint.

Watch | Download (58MB/mp4)

This module covers the many types of Line of Sight Analysis contained in Quick Terrain Modeler.

Topics Covered:

• Omnidirectional Line of Sight
• Single/Multiple Observers
• Coloration of Results
• Directional Line of Sight (i.e., simulation of sensor/camera coverage or interlocking fields of view).
• Vector Line of Sight
• Travel Route (Motorcade/Convoy) Line of Sight
• Point to Point Line of Sight

Watch | Download (44MB/mp4)

Grid statistics enables sophisticated statistical analysis of point clouds and surface models.

Topics Covered:

• Defining a reference grid.
• Selecting statistical metrics.
• Calculating metrics.
• Displaying Results.
• Template Profiles.
• Exporting Results.

Watch | Download (52MB/mp4)

Quick Terrain Modeler is integrated with Google Earth in many ways.

Topics Covered:

• Previewing modeler and data file extents in Google Earth.
• Synchronizing the view with Google Earth.
• Exporting products to Google Earth.

Watch | Download (76MB/mp4)

Most LiDAR data contain elevation values that are referenced to sea level or a fixed vertical datum. There are many reasons to want these elevation values to be measured in relative, i.e. Above Ground Level (AGL) heights. For scientists, this means forestry and vegetation analysis that can measure individual trees in entire forests/fields. For the DoD, this means evaluating vertical obstructions and removing canopy to reveal objects/LOC's that were previously obscured.

Topics Covered:

• AGL calculation.
• Display options.
• Identifying VO heights.
• "Peeling Back" vegetation canopy.
• Exporting AGL results.

Watch | Download (25MB/mp4)

QT Modeler's new (v7.1.3) indexing tool makes it very fast and easy to catalog your geospatial holdings.

Topics Covered:

• Types of data that can be indexed.
• Display of indices in Google Earth and ESRI Arc Map.
• Organizing your index.
• Generating search caches.

Watch | Download (22MB/mp4)

QT Modeler's batch scripting tool enables automation of repetitive tasks such as DEM creation, coordinate conversion, and LAS file export to tens, hundreds, or thousands of files at once.

Topics Covered:

• Creation of batch scripts.
• Selection of prototype file.
• Adding actions to batch scripts.
• Applying batch script to list of input files.

Watch | Download (25MB/mp4)

QT Modeler's new (v8.0.0) profile analysis tool makes offers powerful, comprehensive ways to view, measure, and edit data in the profile window.

Topics Covered:

• Working with point clouds.
• Editing classification values from the profile window.
• Measuring objectsd from within the profile window.
• Multiple values in the profile Y axis.

Watch | Download (53MB/mp4)

Topics Covered:

• Measurement line improvements.
• New point cloud profile tools for investigating and editing point clouds.
• Viewing point cloud profiles with different colors and attributes.
• Travel route analysis tools
• Cross section tools
• Exporting color imagery to GPS

Watch | Download (50 MB/mp4)

Topics Covered:

• 7.1.6 Overview
• Workspaces: Local workspaces for personal use, exporting portable workspaces to share with others.
• Annotation Layer: Attaching annotation to bookmarks.
• Unit Conversion: Make measurements in feet, even when data is in meters.
• Virtual Line of Sight: Instantaneous LOS, both from a marker and down a line.

Watch | Download (36 MB/mp4)

Topics Covered:

• Universal Coordinate Support
• Real Time LAS Filtering
• 2D-Only Mode & 2D Search
• Tactical Toolbar
• Terrain Hugging Lines
• Enhanced GPS Support

Watch | Download (37 MB/mp4)

QT Modeler has gotten an entire facelift and many new features for v7.1.4.

Topics Covered:

• Layer Tree
• Minimap
• New Buttons and Button Bar
• Point Cloud Display
• Temporary Cut/Crop
• Markers
• Bookmarks
• Scale Bar

Watch | Download (65MB/mp4)

Overview of the Quick Terrain Modeler Version 7.1.0 release.

Topics Covered:

• Imagery overlay enhancement.
• Image sampling onto 3D models - colorized model creation.
• Model search enhancements.
• QTA Quick Color - color point clouds quickly based on LAS point attributes (return number, number of returns, point source ID, etc.)
• Legends
• Enhanced Helicopter Landing Zone (HLZ) tools.
• Coordinate Quick Copy
• Editing LAS classification.

Watch | Download (117MB/mp4)