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Mapping

Landscape models

Mapping can include orthomosaics (2D) and models (3D).  Mapping allows for highly accurate linear, volumetric and area measurements. So hills and depressions can be estimated for volume, distances measure (linear) and area will determine acres or square feet. Here are seven acres that were mapped in under 5 minutes.

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DJI Mavic 3 Enterprise (RTK enabled) with D-RTK-2 Base, 300' up, 34 mph, 240 images, Agisoft Metashape, flight followed terrain (120' delta from lowest point to upper) with hatch pattern, and enhanced border mode.

Stockpiles

volumetric measurements, contour and elevation annotations, linear, area ...

Aerial Inspection: Gravel Pit
These gravel piles can be evaluated as a DSM or DTM, using a 
  • Use Linear fit for measuring most volumes on relatively flat ground.
  • Use Lowest point for bins, pits, or stockpiles up against a wall.
  • Use Triangulated for very large or long and narrow stockpiles on contoured ground.
Gravel pit: Contours and elevations.

Mapping Land Development: Fifty Four acres / 584 images / Flight time ~16 minutes, fully autonomous (repeatable), Hassablaad camera, mechanical shutter, mapping speed: 34 mph, 1" GSD (1" per pixel) at 300' altitude.  Below, measurements include: road length, road area, cul de sac area, elevation / contours and overlay of site map onto orthomosaic of future neighborhood.
Allows for stakeholders to check status, plan, design and evaluate.

Mapping: Mission planning
Mapping: Site overlay for planned neighborhood.

This same orthomosaic image consists of 4K images stitched together, so they offer excellent detail    when expanded.

Mapping: Site overlay close-up 2/2.
Mapping: Site overlay close-up 1/2.

An orthomosaic image also offer elevation and contours, which is excellent to determine water flow / stagnation. Red is high ground. Gradients sizes for the elevation are customizable.

Mapping: Contours and elevation results

Automated, Repeatable Mission Definition

Aerial Land Development Mapping

July - September Side by Side Comparison (Mostly July)

Mapping: Site overlay for planned neighborhood.

July - September Side by Side Comparison (Mostly Sept)

Mapping: Site overlay for planned neighborhood.

Overlaid site plan of affected area.

Mapping: Site overlay for planned neighborhood.

Monthly Comparisons:
One great feature of aerial mapping is being able to compare month to month changes. Options include changes to 

plant health,
contours measurements,
elevation measurements,
stockpile measurements,
linear measurements,
area measurements, 
volumetric measurements
plot plans

Trail Models

Mapping: Four mile trail with QR coded junctions.
This 600+ acre orthomosaic comprises of 
1485 4K images taken over four miles of trails.
Use Cases: 
     SAFETY:  Reporting / Sharing location 
     SAR (Search And Rescue)
     Reporting progress 
     Map making / trail identification aid
     Overlay over Maps
     Trail Maintenance
     Trail Rerouting Planning
.
NOTE:  
4K Images used for creating the orthomosaic are 
     available for the ultimate in terrain detail....   
Bar Codes 
These provide location (long/lat/alt) when scanned with a cell phone. 
They can be photographed and texted to rescuers, friends, team mates... 

The bar code once scanned, will open Google Maps with a pinpoint on the map. Distances can then be determined to heli pads, rescuers, friends, family etc.

A closer look....

Mapping: Four mile trail zoom 1.
Mapping: Four mile trail zoom 2.
Mapping: Four mile trail zoom 3.
Mapping: Four mile trail zoom 4.
Mapping: Four mile trail : Individual image : zoom 2.
Mapping: Four mile trail : Individual image : zoom 3.

Following are example 4K images used in this orthomosaic. They would be helpful for the best detail.  Images taken at 265' altitude (at 34 mph). Lower altitudes are possible,and would increase detail.  In this case, Terrain Follow was used, which allows for keeping the mapping 
at a consistant elevation (important for mapping).  Minimum heigth is 262 feet.  Used because a 400' delta between Bog Road and McMann Road exists. Here's an example.

Mapping: Four mile trail : Individual image : zoom 1.
Mapping: Four mile trail : Individual image : zoom 4.
Mapping: Four mile trail : Individual image : zoom 5.
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