Lecture16

Lecture16 - Analytical Stereoplotter Intergraph...

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1 Geography 12: Maps and Spatial Reasoning Lecture 16: New Methods and Issues for Heights on Maps Professor Keith Clarke Base line Triangulation and Plane Table US Coast and Geodetic Survey: 1937 national coverage
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2 Triangulations: WGS70 Post WWII Air photographs Principal Point
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3 Radial displacement around nadir Relief Displacement Height from displacement
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4 Reference axes Orthorectification Ground truth Orthorectified
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5 Buildings easy, terrain hard! Unless, there are two images Stereo geometry (Conjugate PP) Flight line geometry/overlap
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6 Height from parallax Flight planning map Analog photogrammetry Softcopy photogrammetry Wild Heerbrug BC2
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Unformatted text preview: Analytical Stereoplotter Intergraph Workstations 7 How SAR works Terrain Model from IFSAR (Hailey, ID) IFSAR DEM SAR from Space 8 SRTM: Global topo map NOAA Southern Cal. IFSAR viewer IFSAR: Thousand Oaks, CA How Lidar works 9 LIDAR first and last pulse LIDAR terrain detail 3D Models LiDAR LiDAR data 10 Critical height issue: Floods/Sea Level FEMA: D-FIRMs Summary First generation topographic mapping used triangulation and plane table Second generation used stereo photogrammetry New generation uses IFSAR and LIDAR Unprecedented accuracy What surface to map?...
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Lecture16 - Analytical Stereoplotter Intergraph...

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