NEST (Next ESA SAR Toolbox) 2C release demonstration

Transcription

1 NEST (Next ESA SAR Toolbox) 2C release demonstration Andrea Minchella 1 July 2009 D3l1b

2 CONTENTS - Brief introduction to the NEST project - Basic concepts 1. How accessing data: Product readers, Open Raster Dataset, Import Browser 2. The Product view: product inspection 3. The Product view: Navigation Window, LUT manipulation, Analysis tool 4. Create a Project - Exercise: How creating a time series of 3 calibrated, speckle filtered and coregistered datasets (1 ERS2 PRI and 2 ASAR IMP) 1. Calibration (ASAR, ERS) 2. Single image: Speckle filtering 3. Coregistration 4. Display RGB - The GRAPH builder 2

3 NEXT ESA SAR TOOLBOX (NEST) NEST (Next ESA SAR Toolbox) is a new open source ESA software for visualizing, analyzing and post-processing ESA and 3rd party SAR data processed from Level-1 or higher Provides both basic and advanced tools for SAR user community Shares the core architecture with the ESA BEAM toolbox Fully portable to multiple hardware platforms and operating systems thanks to a 100% pure Java implementation. Modular design for easy modifications and upgrades An API enables users to easily add their own modules and extend the capabilities of NEST Fully open source under the GNU GPL licence 3

4 NEST 2C HIGHLIGHTS [1] Project Time scale Fist Release 1 C November 2008 Second release 2C June 2009 Third release 3C is expected in December 2009 Currently supported products - ESA SAR missions: ERS1 & 2 (CEOS & Envisat format from PGS and VMP), ENVISAT - Third party SAR-data: ALOS PALSAR, JERS SAR, TerraSAR-X (except SSC), Radarsat-2 An integrated Display and Analysis Tool (DAT) for SAR data visualisation, analysis and processing A Graph Processing Tool (GPT) for command line execution of user-defined batch processing chains A rich collection of readers and writers to allow easy and efficient access to SAR data and transfer of data between different software packages (DIMAP, GeoTIFF, HDF 4 & HDF 5, NetCDF, ENVI, Generic Binary) 4

5 NEST 2C HIGHLIGHTS [2] Envisat ASAR, ERS 1&2 and ALOS calibration Coregistration of detected and complex products. Multilooking & speckle filtering Debursting of ASAR WSS products Ingestion and utilisation of external orbit files - DORIS VOR, POR and DELFT Precise Orbits Orthorectification for Envisat ASAR, ERS, and Radarsat2 products Radiometric terrain correction for Envisat ASAR products ASAR Wave Product Support PolsarPro Reader 5

6 NEST 2C HIGHLIGHTS [3] Slant Range to Ground Range conversion Band arithmetic & filtering Data type conversion Automatic import of 90m SRTM DEM Principle Component Analysis, EM Cluster Analysis, KMeans Cluster Analysis Layer Management Vector Shape Layers Web Map Service (WMS) layers NASA WorldWind Integration 6

7 BASIC CONCEPTS 1. How accessing data: Product readers, Open Raster Dataset, Import Browser 2. The Product view: product inspection 3. The Product view: Navigation Window, LUT manipulation, Analysis tool 4. Create a Project Where and what are the data for the demonstration: C:\Land_Training\Wednesday\Introduction to NEST_ Subset stored in BEAM-DIMAP format ASAR (2 IMP: 14/02/ /09/2003) ERS2 (1 IMP: 6/04/1996) same track and frame 7

8 HOW ACCESSING DATA: Open Raster Dataset 8

9 HOW ACCESSING DATA: Product Readers 9

10 HOW ACCESSING DATA: Import Browser 10

11 HOW ACCESSING DATA: Import Browser After having selected the directories, click on yes in the following message 11

12 HOW ACCESSING DATA: Import Browser Click on 12

13 THE PRODUCT VIEW After having opened the product, the data is listed in the Products View where you can examine product structure and metadata. 13

14 THE PRODUCT VIEW A Product consists of the following: Identification: Basic information on the product (Mission, Product type, Acquisition time, Track and Orbit) Metadata: This includes all the original metadata within the product, the Abstracted Metadata which is the important metadata fields used by the Operators in a common format and the Processing_graph history recording the processing that was done and Tie Point Grids: Raster grids created interpolating the tie-points information within the product. The interpolation is done on the fly according to the product. Bands: The actual bands inside the product and virtual bands created by NEST from expressions. Different icons are used to distinguish these bands. 14

15 Navigation Window 15

16 LUT manipulation 16

17 Analysis tool 17

18 CREATING PROJECT Nest offers the capability to create a Project, in which the user can organise and store complex processing over multiple datasets The main advantage of using Projects is that it automatically organizes the processed images in separate directories 18

19 CREATING PROJECT From the New Project dialog, browse for a folder and enter the project name 19

20 CREATING PROJECT 20

21 EXERCISE How creating a time series of 3 datasets calibrated, speckle filtered and coregistered (1 ERS2 PRI and 2 ASAR IMP) 1. Calibration (ASAR, ERS) 2. Single image: Speckle filtering 3. Coregistration 4. Display RGB 21

22 ASAR CALIBRATION 22

23 ASAR CALIBRATION: 14/02/

24 ASAR CALIBRATION: 14/02/

25 ASAR CALIBRATION: 27/09/2009 Right Click on Project File for refrech 25

26 ERS 2 CALIBRATION: 6/04/

27 AFTER CALIBRATION After having calibrated click on each of the calibrated data to inspect the product into the Product View 27

28 Product inspection: the Processing Graph 28

29 Product inspection: Pixel info 29

30 AFTER CALIBRATION: product inspection 30

31 SPECKLE FILTERING Creation of a Speckled product folder inside the project Right Click on 31

32 SPECKLE FILTERING 32

33 SPECKLE FILTERING: ASAR 14/02/2004 Select the folder Speckled Product 33

34 SPECKLE FILTERING: ASAR 27/09/

35 SPECKLE FILTERING: ERS 06/04/

36 AFTER SPECKLE FILTERING 36

37 COMPARISON: before and after speckle 37

38 COREGISTRATION: 2 ASAR and 1 ERS Drag and drop products from the Project. 38

39 COREGISTRATION: 2 ASAR and 1 ERS 39

40 COREGISTRATION: 2 ASAR and 1 ERS Leave default values 40

41 COREGISTRATION: 2 ASAR and 1 ERS Leave default values 41

42 COREGISTRATION: 2 ASAR and 1 ERS Change the output directory 42

43 COREGISTRATION: 2 ASAR and 1 ERS 43

44 RGB VISUALIZATION 44

45 RGB VISUALIZATION 45

46 RGB VISUALIZATION 46

47 GRAPH BUILDER 47

48 GRAPH BUILDER 48