Nature_reserve_Mapping_GPS.jpg

Nature Reserve Drenthe: Processed Results

January 6, 2021

In July - August 2020 HiView, together with Borgman Beheer, conducted an interesting assignment from Natuurmonumenten, the biggest land conservation association in the Netherlands.

At stake was to detect young upcoming trees in heather fields in an area of 1400 ha. HiView deployed Flying Sensors (drones) with NIR (Near InfraRed) cameras to make a vegetation coverage map of the complete area. Below is shown the method which is used to assess biomasses from different vegetation classes.

The images below show stitched height models, vegetation classification models and NIR images.

For 9 different vegetation classes, the heights have been determined based on 3D processing of the Flying Senor NIR (Near InfraRed) images.

The CHM (Canopy Height Model) is derived from the reduction of the DTM (Digital Terrain Model) and the AHN (Dutch height map). The CHM makes it possible to assess biomasses from all 9 vegetation classes.

CanopyHeightModel_CHM
CanopyHeightModel_CHM

Height model

RawHeightClasses_RHC
RawHeightClasses_RHC

Vegetation classification

Case2_NIR
Case2_NIR

CanopyHeightModel_CHM
CanopyHeightModel_CHM

Height model

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