Introduction to ERDAS Imagine

Transcription

1 Course: Remote Sensing Basic Theory & Image Processing Methods September 2011 Introduction to ERDAS Imagine Michiel Damen UNIVERSITY of TWENTE - Michiel Damen 1

2 Contents About ERDAS Imagine ERDAS Product suite Imagine Startup Viewer - View of multiple layers Setting of preferences Import / Export Examples: Filter, Geometric correction, Mosaicing, Map composer, Image classification, Spatial modeler, Stereo analyst, Virtual GIS HELP! function ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 2 2

3 About ERDAS Pioneer in PC-based image processing (1978) One of the leading providers of Geographic Imaging products & services Headquarter Atlanta, Georgia, USA ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 3 3

4 About ERDAS Focus on image processing and information extraction; aerial and space Raster based analysis Increasing integration of GIS functionality Close links with the ArcGIS suite of ESRI ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 4 4

5 ERDAS Product Suite Imagine Essentials Add-on modules (a.o. Virtual GIS, Vector Module) Photogrammetric Applications i (OrthoBASE, Stereo- Analyst) Radar Applications ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 5 5

6 ERDAS Interfaces Classical Windows 2010 ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 6 6

7 Imagine startup (Classic interface) Viewer ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 7 7

8 Viewer Most common data types have a pull-down menu f Most common functions have short cuts and an icon 8

9 Viewer Viewer -> File -> Open - > Raster Layer... (Ctrl-R) Use Recent... or Goto.. to use recent files or go to recent subdirectories Change preferences for default file locations and viewer preferences if you wish 9

10 View multiple layers Sharing the same co- ordinates and projection Viewer -> View -> Arrange Layers (Ctrl-L) 10

11 Preferences It s useful here to specify the folder that contains the exercise data (and to which you have writing access) ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 11 11

12 Import / Export ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 12 12

13 Example: filter ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 13 13

14 Example : Geometric correction tool Chip extraction 14

15 Example : Mosaicing tool 15

16 Mosaic output 16

17 Map composer Map Frame tool 17

18 Map composer Map Grid tool Map Output 18

19 Classification 19

20 Spatial Modeler ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 20 20

21 Stereo Analyst Creation of anaglyph red < > green/blue ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 21 21

22 Virtual GIS 3D images ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 22 22

23 Help! Context C t t sensitive Help menu: pull down menu right-mouse button over a window ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 23 23

24 Documentation Introduction ERDAS Imagine Both Guides are available in PFD at the data CD ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 24 24

25 ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 25 25

26 Questions ITC FACULTY OF GEO-INFORMATION SCIENCE AND EARTH OBSERVATION, UNIV. OF TWENTE 26 26