High Density LiDAR Services and Product Examples by 3Di, Inc_02172014
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Transcript of High Density LiDAR Services and Product Examples by 3Di, Inc_02172014
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PRESENTED BY: MARCUS GLASS
High Density LiDAR&
Photogrammetric Point Clouds
3Di | GeoTerra Mapping Group
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HIGH DENSITY LIDAR
What is “High Density”
3Di | GeoTerra Mapping Group
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HIGH DENSITY LIDAR
How to we achieve high point densities?
1. Points per meter……low & slow 2. Double Coverage
3. System Specifications 4.Multiple Returns or Full Wave Form
3Di | GeoTerra Mapping Group
12 to 20 points per square meter!
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HIGH DENSITY LIDAR
What do we do with so many points?
Superior vegetation penetration
Object identification (manual and automated processing)
Detection of small linear objects
3D City Modeling / Mapping
Improved vegetation analysis
Electrical transmission - existing
Integration with Ground Based LiDAR
3Di | GeoTerra Mapping Group
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HIGH DENSITY LIDARRail Corridor
Sheep
Grape Vines
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HIGH DENSITY LIDAR
Rail Corridor
Rail Line
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Overhead Transmission
12 to 14 Pointsper meter
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HIGH DENSITY LIDARRail Corridor
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HIGH DENSITY LIDARRail Corridor
14 points per meter
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ITD Road Corridor
West of
Twin FallsIdaho
HIGH DENSITY LIDAR
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HIGH DENSITY LIDARRoad Corridor
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HIGH DENSITY LIDARRoad Corridor
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HIGH DENSITY LIDARRoad Corridor
Transmission Lines
12 to 14 points per meter
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HIGH DENSITY LIDARRoad Corridor TIN
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HIGH DENSITY LIDARTransmission Corridor
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HIGH DENSITY LIDARTransmission Corridor
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HIGH DENSITY LIDARTransmission Corridor
Bare Earth – Transmission Classified
All Returns – Transmission Classfied
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HIGH DENSITY LIDAR
Transmission Corridor“Classified LAS Data Set”
40 points per meter
3Di | GeoTerra Mapping Group
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HIGH DENSITY LIDAR
Transmission Corridor“Classified by Height”
3Di | GeoTerra Mapping Group
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HIGH DENSITY LIDARTransmission Corridor – Line SAG
Visible & Measurable Line SagEWEB, Eugene, Oregon
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Height Classified LiDAR26 to 30 PPMUrban Corridor
3Di | GeoTerra Mapping Group
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Height Classified LiDAR Points with Intensity Image Date26 to 30 PPMUrban Corridor
3Di | GeoTerra Mapping Group
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Classified LiDAR Points with Intensity Image Date26 to 30 PPMUrban Corridor
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HIGH DENSITY LIDAR
TransmissionCorridor
Copper Lines
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HIGH DENSITY LIDAR
TransmissionCorridor
Copper Lines
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LiDAR Return Density
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INTENSITY IMAGES
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12
HIGH DENSITY LIDAR
Floodplain Mapping with LiDARColorized Points - DSM
Manastash, Washington
12 to 14 points per meter
3Di | GeoTerra Mapping Group
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HIGH DENSITY LIDAR
Vegetation
Identification&
Management
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PHOTOGRAMMETRIC DTM3Di | GeoTerra Mapping Group
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TIN – TRIANGULAR IRREGULAR SURFACE
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3D SURFACE
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PHOTOGRAMMETRIC
AUTOMATED POINT CLOUD GENERATION
1 meter grid blocks
Pixel Resolution = 0.5’Autocorrelated Grid at 36 points per meter LiDAR 32 to 36 points per meter
3Di | GeoTerra Mapping Group
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1 Foot Pixel
AUTOMATED POINT CLOUD GENERATION – 1 FOOT PIXEL IMAGERY – 9 PTS. / METER
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AUTOMATED POINT CLOUD GENERATION – 1 FOOT PIXEL IMAGERY – 9 PTS. / METER
SHADED RELIEF MAP
3Di | GeoTerra Mapping Group
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AUTOMATED POINT CLOUD GENERATION – 1 FOOT PIXEL IMAGERY – 9 PTS. / METER
3D VIEW – DRAPING ORTHO TO DEM
3Di | GeoTerra Mapping Group
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Full Return
AUTOMATED POINT CLOUD GENERATION
Classified Vegetation - Ground
Classified Vegetation – Bare Earth
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AUTOMATED POINT CLOUD GENERATION
DSM – Digital Surface Model / Colorized Points Full Point Cloud
3Di | GeoTerra Mapping Group
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FULL POINT DENSITY – CLASSIFIED POINTS (36 PPM)
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AUTOMATED POINT CLOUD GENERATION
First Return Filtered
Final Ground
0.5’ Grid Density36-40 points/meter
3Di | GeoTerra Mapping Group
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AUTOMATED POINT CLOUD GENERATION5’ Grid Spacing
Half-foot Grid Spacing Two-foot Contours
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Marcus Glass, CP
3Di, Inc.
Eugene & Portland, OR and
Boise, Idaho
Direct - 503.577.2613
3Di | GeoTerra Mapping Group