landusemonitoring bysatelliteimages --- urban growth descripted by satellite images --- statistical comparison of the results by Ingrid Christ and Dr. Rolf Lessing
agenda. methodology of satellite image analysis examples description of land use change over 20 years analysis of urban growth in different zones of Hanoi analysis of urban growth among main roads and without main roads futureaspects conclusion 2
methodologyaspects. ourmaintaskin REMON was: development of a method for a semi-automatic classification of satellite images with different quality development: using a method by our own, called econstruction 3
methodeconstruction. using Construction a point is defined a a representative of the image Inputdata of different sources can be analysed by adequate rules (e.g. radius, method). Herewith the features of the representative are build. The features were analysed by newtechnologies, dependingon the question 4
date Satellite Sensor Spectral resolution Geometric resolution 29.12.1975 Landsat MSS 4 (blau, rot, NIR1, NIR2) 57 x 57m² (79x 79m²) 27.12.1993 LandsatTM5 7 (blau, grün, rot, NIR1, MIR1,PAN, MIR2) 30.09.1996 LandsatTM5 7 (blau, grün, rot, NIR, MIR1,PAN, MIR2) 20.12.1999 LandsatETM7 9 (blau, grün, rot,nir, MIR1, TR1, TR2, MIR2, PAN) 11.04.2000 LandsatETM7 9 (blau, grün, rot,nir, MIR1, TR1, TR2, MIR2, PAN) 23.11.2001 LandsatETM7 9 (blau, grün, rot,nir, MIR1, TR1, TR2, MIR2, PAN) 08.11.2007 LandsatETM7 9 (blau, grün, rot,nir, MIR1, TR1, TR2, MIR2, PAN) Radiometr. resolution 8 Bit (256) 30 x 30m² 8 Bit (256) 30 x 30m² 8 Bit (256) 30 x 30m² 8 Bit (256) 30 x 30m² 8 Bit (256) 30 x 30m² 8 Bit (256) 30 x 30m² 8 Bit (256) 10.12.2010 WorldView II 5 (blau, grün, rot, NIR, PAN) 2 x 2m² 11 Bit (2.048) 18.11.2012 RapidEye 5 (blau, grün, rot, Red Edge, NIR) 5 x 5m² 16 Bit (65.536) 20.05.2013 RapidEye 5 (blau, grün, rot, Red Edge, NIR) 5 x 5m² 16 Bit (65.536) 03.11.2013 RapidEye 5 (blau, grün, rot, Red Edge, NIR) 5 x 5m² 16 Bit (65.536) 14.05.2014 RapidEye 5 (blau, grün, rot, Red Edge, NIR) 5 x 5m² 16 Bit (65.536) 5
landsatimage. 1996 6
landsatimage. 2001 7
landsatimage. 2009 8
rapid eyeimage. 2014 9
landusechangein Hanoi. 1996 10
landusechangein Hanoi. 2001 11
landusechangein Hanoi. 2009 12
landusechangein Hanoi. 2014 13
analysisofurban development. zones axes 14
analysisofurban development. sealedareas= conclusionofsettlementsofdifferent agglomeration and industry areas investigations: thedevelopmentofthesealedareasin thedifferent zones overthelast 20 years the difference between the development along a main road versus the development without a main road zones axes 15
sealedareas(relative) over20 years. Zone 4 km Zone 8 km Zone 12 km Zone 20 km 16
sealedareas(relative) over20 years. Zone 4 km? Zone 8 km Zone 12 km Zone 20 km 17
sealedareas(absolut) over20 years. Zone 8 km Zone 12, 16, 20 km Zone 4 km 18
sealedareas(absolut) over20 years. increase of urban areas > 10 km²/year Zone 8 km increase of urban areas ~ 2.00 km²/year ~ 1.25 km²/year ~ 0.775 km²/year Zone 12, 16, 20 km Zone 4 km sum for Hanoi > 40 km²/year 19
comparisonofdifferent axes. 20
comparisonofdifferent axes. 1993 21
comparisonofdifferent axes. 2001 22
comparisonofdifferent axes. 2007 23
comparisonofdifferent axes. 2014 24
comparisonofdifferent axes. axes5 development along main road axes2 development without main road axes1 and3 25
futureaspects. monitoring urban growth by satellite images will increase andgeta loteasier: methods for classification urban features will get more and more public radardata(e.g. Sentinel1) will beavailableevery11 days (independenceofclouds) moreandmoresatelliteimagesareavailablefreetouse Spatial Data Infrastructures(SDI) allows an easy integration of satellite images into existing information systems 26
futureaspects. 27
conclusions. attheend ofmypresentationletmesay Thanksa lot! tothebmbfforthefinancialsupportoftheproject tomycolleaguesingrid Christ, Philipp Lehmann andmario Stutzki for there engagement, for there ideas and for there patience tomatias Ruiz LorbacherandSon Le for the coordination of this big project, for there patience and for there constancy to manage the project, not only between the german partners, but over this great distance to Hanoi To Nguyen Phuong Hien for the coordination between the different organisations in Hanoi and for her support during the validation of our results 28