Envisat AATSR 2 weeks June 2003 Web Mapping Access to the MUIS Browse Products Lars Edgardh...
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Transcript of Envisat AATSR 2 weeks June 2003 Web Mapping Access to the MUIS Browse Products Lars Edgardh...
![Page 1: Envisat AATSR 2 weeks June 2003 Web Mapping Access to the MUIS Browse Products Lars Edgardh Spacemetric Torbjörn Westin Spacemetric .](https://reader036.fdocuments.in/reader036/viewer/2022062520/5697c0251a28abf838cd509a/html5/thumbnails/1.jpg)
Envisat AATSR 2 weeks June 2003
Web Mapping Access to theMUIS Browse Products
Lars Edgardh SpacemetricTorbjörn Westin Spacemetric
www.spacemetric.com
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MUIS2WMS project
MUIS-C
InterfaceServlets
WMS ImageServer
• ESRIN specification
• Spacemetric contractor
• SaabTech subcontractor
• Delivered March 2004 on time and on budget
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Spacemetric• Systems for geographical information in
operational context
• Consulting in satellite photogrammetry and image production
• Proven project methods. Long experience of running complex projects
• Web-based technologies such as Java, XML, HTML and JSP
Located in Stockholm Sweden
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Requirements
• Statement of work very clear
• Should provide high accuracy in the rectified and mosaiced images
• Very short response times
• Support of all MUIS-C (MUIS-B) satellites and sensors (14 sensors), both optical and radar
• Based on open source
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Our approach• Reuse modules and experience of designing
systems for orthorectification
• Use same type of analytical model as full images
• Accuracy and stability by using analytical models
• Try new technology for fast massive parallel image processing – Application servers
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WMS Image ServerThe WMS Image Server makes rectification and mosaicing of browses on the fly. The server is a middleware between client and MUIS-C catalogue.
WMS Image Server makes full ortho rectification of browses with sub-pixel accuracy.
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Integration of image data
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WMS query examplehttp://mapmuis.esrin.esa.int:8080/wmsserver/wms?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG%3A4326&BBOX=7.633748612764467,48.01466301256679,8.212532999103882,57.91858901998451&WIDTH=560&HEIGHT=350&LAYERS=ENV_ASAR_WS_SL,ENV_AATSR_SL&STYLES=,&FORMAT=image%2Fpng&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE
http://mapmuis.esrin.esa.int:8080/wmsserver/wms?VERSION=1.1.1
&REQUEST=GetMap
&SRS=EPSG:4326
&BBOX=7.633748612764467,48.01466301256679,...
&WIDTH=560
&HEIGHT=350
&LAYERS=ENV_ASAR_WS_SL,ENV_AATSR_SL
&STYLES=,
&FORMAT=image%2Fpng
&BGCOLOR=0xFFFFFF
&TRANSPARENT=TRUE
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ERS SARERS ATSR-1ERS ATSR-2JERS OPSLandsat TMLandsat MSSNOAA AVHRR
IRS-P3 MOSCHRIS PROBASeaStar SEAWIFSTERRA MODISENVISAT ASARENVISAT AATSRENVISAT MERIS
Missions and sensors
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Requirements on geometric accuracy
Max 1 pixel error
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Rigoruos photogrammetric model
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Generic sensor models
● Sweep scanner● Conical scanner● Pushbroom scanner● SAR
Preprocessing levels
● Raw swath images● Ground-range preprocessed images
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Analytical model Polynomial model
Raw browse
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● EPSG:4326 Plate Carrée● AUTO:42001 Auto UTM● AUTO:42002 Auto Transverse Mercator● AUTO:42003 Auto Orthographic● AUTO:42004 Auto Equirectangular● EPSG:* Full EPSG compatibility -> more than 2500
predefined coordinate reference systems
Map projections
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Plate Carrée
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UTM
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Orthographic
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Orthorectification using a global DEM
The GLOBE DEM has 1 km resolution
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Ellipsoid projected Orthorectified
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Original radiometry Automatic linear rescaling
Image enhancement
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Removal of decorative frames
Configurable for different missions and time periods
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Thresholding black areas
Removes columns and rows based on theshold of column and row average intensities
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MRPPLL
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JPEG
PNG supports transparency
GeoTIFF stores all map information in tags forautomatic georeferencing in GIS systems
Image file formats
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