Experiences with High density image matching (idsm) at the LVG Bavaria and other NMA in Germany Wolfgang Stößel Photogrammetry and Remote Sensing
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1 Experiences with High density image matching (idsm) at the LVG Bavaria and other NMA in Germany Wolfgang Stößel Photogrammetry and Remote Sensing EuroSDR Workshop Vienna 1
2 Image based surface models (idsm) e.g. 3D-city models of Google and Microsoft EuroSDR Workshop Vienna 2
3 In 2009 the AdV asked the PG-DOP to -observe and test new Matching Software - carry out own tests - give recommendations EuroSDR Workshop Vienna 3
4 Surface Model from image matching (2010) GSD 20 cm -Very long computation time -Huge hardware -High costs (for software) EuroSDR Workshop Vienna 4
5 Surface models texturized EuroSDR Workshop Vienna 5
6 EuroSDR Workshop Vienna 6
7 Matching software available (Commercial and non-commercial) Matcher Company / Institution Contact Test with data from LVG Remarks Match-T 5.3. INPHO/Trimble Stuttgart yes At LVG in use, but no pixel wise matching NGATE BAE systems Partially, yes Mrs. Hastedt, WSL Zürich Semi Global Matching DLR, Munich Dr. Hirschmüller Yes Pixelwise matching, 16 bit, PAN Computation time intensive Dense Matcher Vexcel imaging / Microsoft, Graz Currentlyin progress Pixelwise matching eate Leica LPS Geosystem Delayed Planned Test hopefullyin April 2010 ISAE (Intergraph) Z/I Oberkochen no EuroSDR Workshop Vienna 7
8 Matching Software Stand: Name Company / Institution Commercia l availlable remarks Computation plattform Semi Global Matching DLR, Munich Dr. Hirschmüller no cluster GPU + FPGA i.a Dense Matcher (UltraMap 4.0) Vexcel imaging / Microsoft, Graz Test version Up to now only for UC g. Performance GPU Match-T 5.4. INPHO/Trimble Yes Further developements Workstation XPRO Leica Yes SGM for ADS Workstation TRIDICON GTA Yes Algorithmus? Workstation MicMac IGN France Yes Linux- Workstation eate Leica LPS Geosystems Yes at LVG in Test NGATE BAE systems yes EuroSDR Workshop Vienna 8
9 Results dependend on - Matching Software - Aerial Image flightparameters -Type of camera -Computation Hardware -Time of flight (with or without vegetation).. EuroSDR Workshop Vienna 9
10 PG-DOP des AK-GT: Investigation into Forward overlap Side overlap Ground sampling distance type of camera Color depth / channel Time of flight Difference to synchronous Lidar Software settings Land BY MV RP BY MV RP / HE MV / HE BY / RP Remarks Verschiedene Datenvarianten Frühjahrsbefliegung Schwerin; L70, Q60; GSD10 cm; Sensor UCD Zeitgleich DOP10 und DOP 20 - Befliegung Comparison Vexcel / DMC an den Losrändern 8 bit / 16 bit, pan, rgb, cir, With or without vegetation Kombinierte Frühjahrsbefliegung L70, Q30; GSD10 cm; Sensor UCD Vergleich DOP20-Bildflug und ALS (4 Pkt/m²) Different landscape types Accuracyof orientation Algorithm and software BY / RP BY Direkte Georeferenzierung und AT-Ergebnis Mostlyfinished, but new software available EuroSDR Workshop Vienna 10
11 14 participants or interested 5 NMA 9 Universities -companies/software developers EuroSDR Workshop Vienna 11
12 Software MicMac des IGN France EuroSDR Workshop Vienna 12
13 idsm Applications Point cloud for 3D-building models - lidar points often old - point clouds for new buildings - Länder like NI use only idsm Updating DTM - outside forests - bare ground EuroSDR Workshop Vienna 13
14 idsm Applications Canopy models - tree heights - bio mass - wood estimation - bio diversity EuroSDR Workshop Vienna 14
15 idsm Applications True DOP complementary to classical DOP Colored point cloud Moving objects (cars, pedestrians, etc.) Mismatches Trees, vegetation EuroSDR Workshop Vienna 15
16 EuroSDR Workshop Vienna 16
17 idsm Applications Additional input for image classifiication - Used in RP with ecogniction (building changes..) - tests with GAF in BY (ecognition and idsm) Visualisation of Landscape(Geo-visualisation) Landscape combination with other geodata big demand EuroSDR Workshop Vienna 17
18 3D-Landscape visualisation (geo-visualisation) 3D-Reality Maps Prof. Siegert, München Webapplication image based DSM (40 cm) true DOP with GSD 20 cm Presented his work - EuroSDR Workshop on 3D-GIS in Munich in Febr PhoWo 2011 in Stuttgart EuroSDR Workshop Vienna 18
19 TerraTrace Prof. Westermann, TU Munich huge amount of data standalone application First pulse Lidar points classical DOP with GSD 20 cm Stereo option New: Web application EuroSDR Workshop Vienna 19
20 EuroSDR Workshop Vienna 20
21 Expections of the NMAs -Software: available, affordable, fast, produce good results, easy to use, good support, good result for standard image flight parameters (20 cm, 75%/30%) -Hardware: normal hardware, GPU, distributed computing - new tools like viewers for colored 3D-point-clouds - suitable format for storing and exchanging idoms -.. EuroSDR Workshop Vienna 21
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