Remote sensing Remote sensing Introduction, application Introduction, application and examples and examples
Jan 02, 2016
Remote sensingRemote sensingIntroduction, application Introduction, application
and examplesand examples
What can we use it for?What can we use it for?
►►Mapping Mapping (geologic mapping(geologic mapping…… etc.)etc.)
►►Monitor Monitor (Tectonic deformation, deforest.. etc.)(Tectonic deformation, deforest.. etc.)
►►Quick response Quick response (Hazard estimations(Hazard estimations…… etc.)etc.)
►►Generate DEM Generate DEM
Common types in Remote SensingCommon types in Remote Sensing
►►Active systemActive system RadarRadar LidarLidar SonarSonar
►►Passive systemPassive system Aerial photoAerial photo Satellite imageSatellite image
Common types in Remote SensingCommon types in Remote Sensing
►►Active systemActive system RadarRadar LidarLidar SonarSonar
►►Passive systemPassive system Aerial photoAerial photo Satellite imageSatellite image
What do we need to know..What do we need to know..
►►Image AcquisitionImage Acquisition
►►Image ProcessingImage Processing
►►Image InterpretationImage Interpretation
What do we need to know..What do we need to know..
►►Image AcquisitionImage Acquisition
►►Image ProcessingImage Processing
►►Image InterpretationImage Interpretation
Across-Track Scanner
Push-broom Scanner
Framing Camera
PCI
ENVI
ERDAS IMAGINE
Matlab, IDL… etc.
What do we need to know..What do we need to know..
►►Image AcquisitionImage Acquisition
►►Image ProcessingImage Processing
►►Image InterpretationImage Interpretation
What do we need to know..What do we need to know..
►►Image AcquisitionImage Acquisition
►►Image ProcessingImage Processing
►►Image InterpretationImage InterpretationYour brain
Tools
http://rst.gsfc.nasa.gov/Sect2/Sect2_3.html
Satellites you should knowSatellites you should know
►►LandsatLandsat►►Terra (ASTER)Terra (ASTER)►►MODISMODIS►►SPOTSPOT►►IKONOSIKONOS►►QuickbirdQuickbird
You can find more information fromhttp://www.satimagingcorp.com/
Satellites you should knowSatellites you should know
►►LandsatLandsat (15 (15 –– 120m)120m)►►Terra (ASTER)Terra (ASTER) (15 (15 –– 90m)90m)►►MODISMODIS (250 (250 –– 1000m)1000m)►►SPOTSPOT (2.5 (2.5 –– 20m)20m)►►IKONOSIKONOS (1.0 (1.0 –– 4.0m)4.0m)►►QuickbirdQuickbird (0.6 (0.6 –– 2.4m)2.4m)
You can find more information fromhttp://www.satimagingcorp.com/
Swath (km)
Res
olut
ion
(m)
Please keep in mind..Please keep in mind..
►► Satellite image Satellite image ≠≠ PhotoPhoto
►► Image color Image color ≠≠ real colorreal color
(CORONA) (Quick Brid, from Google Map)
FORMOSAT – 2 (Panchromatic, 2m)
FORMOSAT – 2 (Multispectral, 8m)
FORMOSAT – 2 (Pan image, 2m)
Satellite image correctionSatellite image correction
http://www.spot.com/
Please keep in mind..Please keep in mind..
►► Satellite image Satellite image ≠≠ PhotoPhoto
►► Image color Image color ≠≠ real colorreal colorLandsat 7
(ETM+ sensor)Wavelength
(micrometers)Resolution
(m)
Band 1 0.45 - 0.515 30 Blue
Band 2 0.525 - 0.605 30 Green
Band 3 0.63 - 0.69 30 Red
Band 4 0.75 - 0.90 30 Near IR
Band 5 1.55 - 1.75 30 Mid IR
Band 6 10.40 - 12.5 60 Thermal
Band 7 2.09 - 2.35 30 Mid IR
Pan Band .52 - .90 15 VIN – Near IR
http://landsat.gsfc.nasa.gov/education/compositor/
True Color
http://landsat.gsfc.nasa.gov/education/compositor/
False Color
http://rst.gsfc.nasa.gov/Sect2/Sect2_1.html
Landsat 7 (ETM+ sensor)
Wavelength(micrometers)
Band 1 0.45 - 0.515 B
Band 2 0.525 - 0.605 G
Band 3 0.63 - 0.69 R
Band 4 0.75 - 0.90 N IR
Band 5 1.55 - 1.75 M IR
Band 6 10.40 - 12.5 Th
Band 7 2.09 - 2.35 M IR
Pan Band .52 - .90
ASTER (sensor) Wavelength(micrometers)
B1 VNIR_Band1 0.52 - 0.60
B2 VNIR_Band2 0.63 - 0.69
B3 VNIR_Band3N/B 0.76 - 0.86
B5 SWIR_Band4 1.60 - 1.70
B6 SWIR_Band5 2.145 - 2.185
B7 SWIR_Band6 2.185 - 2.225
B8 SWIR_Band7 2.235 - 2.285
B9 SWIR_Band8 2.295 - 2.365
B10 SWIR_Band9 2.36 - 2.43
B11 TIR_Band10 8.125 - 8.475
B12 TIR_Band11 8.475 - 8.825
B13 TIR_Band12 8.925 - 9.275
B14 TIR_Band13 10.25 - 10.95
B15 TIR_Band14 10.95 - 11.65
http://www.ersdac.or.jp/ASTERimage/Image/023_SAF.jpg
False Color
RGB = 321
R = N-IRG = RedB = Green
http://www.ersdac.or.jp/ASTERimage2/Image/06.JPG
False Color
RGB = 231
R = RedG = N-IRB = Green
Try yourselfTry yourself
►► Open the LANDSAT and ASTER image in ENVIOpen the LANDSAT and ASTER image in ENVI►► Make a false color imageMake a false color image►► Output your image to ArcOutput your image to Arc--MapMap
Work with ENVIWork with ENVI
Open LANDSATOpen LANDSAT
RGB = 321RGB = 321
RGB = 321 RGB = 753
321
731
Output the Output the GeotiffGeotiff
Make a panMake a pan--sharpening imagesharpening image
LANDSAT-7 Band 8 (15m) LANDSAT-7 Band 3 (30m)
Make a panMake a pan--sharpening imagesharpening image
LANDSAT-7 15m Color (Pan) LANDSAT-7 30m RGB (7,3,1)
Make a panMake a pan--sharpening imagesharpening image
B/WHigh-Res
ColorLow-Res
Intensity Color info
Coloredimage
Make a panMake a pan--sharpening imagesharpening image
B/WHigh-Res
ColorLow-Res
Intensity Color info
Coloredimage
Make a panMake a pan--sharpening imagesharpening image
B/WHigh-Res
ColorLow-Res
Intensity Color info
Coloredimage
Make a panMake a pan--sharpening imagesharpening image
Open ASTEROpen ASTER
RGB = 321
RGB = 231
OrthorectifyOrthorectify image (L1B image (L1B --> Ortho)> Ortho)
ASTER Level-1BASTER Ortho