What is LiDAR Intensity Data and What It Reveals Beyond Elevation
Most people think of LiDAR purely as an elevation measurement tool. Every laser pulse also records intensity, how much energy actually returned to the sensor, and this often-overlooked value carries information about surface material, moisture, and condition that elevation data alone cannot reveal.
256 levels
Typical intensity value range recorded
Zero
Additional scans needed, captured automatically
5+
Practical applications for intensity data
100%
LiDAR scans that already capture this data
What Causes Intensity Variation
Different materials reflect laser light differently
A dry road surface reflects strongly, appearing bright in intensity imagery. Wet asphalt, dark vegetation, or certain roofing materials absorb more energy, appearing dimmer. This variation is what allows intensity data to distinguish surface types even when elevation is identical.
Practical Applications of Intensity Data
Road Surface Assessment
Pavement markings and surface wear patterns often show distinctly in intensity imagery, useful for road condition surveys.
Vegetation Health Indication
Stressed or dying vegetation can show different reflectance characteristics compared to healthy foliage of the same species.
Feature Classification Aid
Combining intensity with elevation improves automated classification accuracy for buildings, roads, and vegetation.
Moisture Pattern Detection
Wet areas on surfaces often reflect differently than dry areas, helping identify drainage issues or leak locations.
Road markings and surface texture variation become clearly visible in LiDAR intensity data, valuable for pavement condition studies.
How Intensity Data is Processed and Used
1
Automatic Capture
2
Normalization
3
Visualization
Do I need to request intensity data specifically?
Intensity is captured automatically in every LiDAR scan, but the processed intensity image as a specific deliverable format should be mentioned in your scope if you want it delivered as a standalone product.
Intensity data comes standard with our LiDAR deliverables and can be provided as processed imagery when it adds value to your specific analysis. Learn more about our LiDAR scanning services.
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