International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 RiskCity Exercise 2: Stereo image interpretation Cees van Westen.

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International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 RiskCity Exercise 2: Stereo image interpretation Cees van Westen (ed)

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Stereo interpretation Screenscope Anaglyph Steps: Download data from Google Earth Create ortho image Create stereoimage Image interpretation

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Stereo images in ILWIS Using two stereo images Using one image and a DEM

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Downloading imagery from Google Earth Many area in the world are covered by high resolution imagery. Better first consult than download For detailed download you need Google Earth Pro (cost 400 US $) You can download 4000 * 4800 resolution Here we don’t have Google Earth Pro on all computers. Only one in room 4 – 105 We have downloaded it already for you At home you might like to try the trial version of the Goolge Earth Pro, which allows to download high resolution images. Go to:

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Georeferencing

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Using anaglyphs Easy and simple to use (can also be using beamer) Anaglyph glasses are very cheap You can not show color images Digitizing your interpretation on the image can be done but is more difficult, because the interpretation is “floating” over the surface

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 View 3-D using analgyph image

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Mapping landslides

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Multitemporal analysis

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Using a screen stereoscope Resembles normal stereoscope. Costs only 100 US $ ( com.au ) You can show color images Stereo pair shown in windows. You can directly digitize your interpretation on the image, as it has already a georeference Active the right image Active the left image Adjust the relative position

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Interpretation directly on the stereo model

International Institute for Geo-Information Science and Earth Observation (ITC) ISL 2004 Generate a stereopair from LIDAR Image processing - Stereo Pair from DTM