Middlebury, Connecticut (Color Infrared 2014)
Middlebury, Connecticut (Color Infrared 2014)
Middlebury, Connecticut, Colorized SpatialCover Canopy Height Model (CHM) derived from LIDAR
Middlebury, Connecticut (Color Infrared 2014)
Middlebury, Connecticut (Color Infrared 2014)
Middlebury, Connecticut (Color Infrared 2014)
Middlebury, Connecticut, Colorized SpatialCover Canopy Height Model (CHM) derived from LIDAR
Middlebury, Connecticut (Color Infrared 2014)

SpatialCover Canopy Height Model (CHM) Connecticut

SpatialCover Canopy Height Model (CHM) Connecticut is a high resolution (1 meter) raster dataset that maps the tree height as a continuous surface for Connecticut. Each pixel in the CHM represents the tree overstory height above the underlying ground topography. It is derived from processing multiple terabytes of color infrared imagery from 2014 and LIDAR data flown between 2006 and 2014. LIDAR is a remote sensing technology that enables accurate measurement of elevation for different ground surface types based on the light pulses reflected from the earth.


What can you do with SpatialCover Canopy Height Model (CHM) Connecticut?

The SpatialCover Canopy Height Model (CHM) Connecticut dataset supports numerous applications for urban planning, forest inventory and ecosystem analysis.


Approach

A Digital Surface Model (DSM) was created from first returns of the LIDAR point cloud data and bare earth elevations were removed from the DSM to derive an above ground surface model. Buildings and tree canopy were differentiated in the above ground surface model using color infrared imagery through an expert rule based classification system. Tree heights were interpolated using the highest LIDAR return within each 1 meter pixel that was classified as tree canopy to generate the Canopy Height Model (CHM). Morphological filtering was used to fill small data gaps and pits to improve the cartographic quality of the final product.


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Tree Canopy Connecticut

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SpatialCover CHM Connecticut Overview

Technical Specifications
Resolution1 meter
Height UnitFeet
Minimum Mapping Unit0.005 acre
Area5,041 sq. miles