aims use of lidar
DESCRIPTION
AIMS use of Lidar. Primary uses. Contour creation DTM/DSM generation Ortho photo rectification Floodplain determination. Secondary Uses. Building h eight estimates Height returned via IMS on point and parcel Assignment of elevation to sewer manholes. Unusual uses. - PowerPoint PPT PresentationTRANSCRIPT
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AIMS use of Lidar
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Primary uses
• Contour creation• DTM/DSM generation• Ortho photo rectification• Floodplain determination
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Secondary Uses
• Building height estimates
• Height returned via IMS on point and parcel• Assignment of elevation to sewer manholes
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Unusual uses
• Historic trail identification• citizen was able to determine the elevations in
an area and suggest alternative higher locations for a proposed cell tower
• Stormwater trace• “Change detection” difference• Vegetation/Tree Canopy identification
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Veg Replacement Options
• Heads up digitizing/updating of existing• Use of feature analyst• Infrared – usually leaf off• Use of Lidar analyst• Use of classification• Use of height differences• Use of return number• Use of LAStools
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Preview of veg
• LAS To Multipoint• Aggregate Points to Polygons• Cleanup – dissolving, simplifying, removing
spikes, smoothing, etc.• QC
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Tools to be aware of
• http://resources.arcgis.com/en/communities/3d/
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Other ideas
• Classify bldg and veg points in LAS• Solar potential utilizes aspect• Line of sight analysis• Terrestrial Lidar – purchased by Crime Lab?• Mobile Lidar – useful for street inventories