1. Remote Sensing software
Software, HQ special strength
ERDAS (Atlanta, USA: 1979) – vector integration
PCI (Toronto, Canada: 1982) – orthophotos / breadth
ENVI (Boulder, USA: 1991) - hyperspectral
ER Mapper (Perth, Australia:) - image web server
…. now part of ERDAS (2007)

2. Early software history
Prior to ERTS / Landsat (1972), little was known about image processing except how to contrast stretch and rectification
CCRS first to acquire Image100 system developed by GE - $1million
OVAAC 8 by Dick Economy (formerly GE), on standard VAX system,
… sold to PCI in 1985
Hardware
Specialised hardware
1981 IBM PC (2 bit colour = 4 colours)
1990 UNIX workstations 8 bit colour
2000 PC – windows with 24 bit colour

3. ERDAS Earth Resources Data Analysis System – 1979 Unix / Windows / Mac
Live link raster-vector 1988
Partnered with ESRI
Owned by Leica (since 2001)
Current version: Imagine (filetype .img)

4. ERDAS extensions for ArcGIS http://www. erdas

5. ArcGIS spatial analyst (GRID)

6. PCI Geomatics 1982: formed as Perceptron Computing Inc.
Windows and Linux
First versions (FORTRAN) were command line: EASI/PACE
Tutorials:
Technical papers:

7. ENVI Windows / Unix / Linux / Mac
Co-registration of Optically Sensed Images and Correlation (COSI CORR)
for movements – landslides, earthquakes, sand dunes, glaciers
Windows / Unix / Linux / Mac

8. Other software: Microimages TNTmips http://www. microimages
Other software: Microimages TNTmips - windows / Mac / Unix / Linux

9. IDRISI Worcester (Boston) http://www.clarklabs.org http://www.idrisi.ca
Who was Idrisi?

10. GRASS - http://grass.itc.it/
Started in 1982 by U.S. Army - Construction Engineering Research Laboratory (USA-CERL) in Champaign, Illinois. USA-CERL completed its last release of GRASS as version 4.1 in 1992.
GRASS development was assumed by academia in 1997, an international team manages the source code.

11. Other software: DIMPLE and BILKO
“DIMPLE is the leader in easy-to-use remote sensing image analysis for Mac OS and Windows.” [NOT]
UNESCO- BILKO (free):
Micropips: An early raster-based microcomputer image processing system

12. eCognition – geog499 project (Jay Fyvie)
Object-oriented classifier
Feature based not pixel
Per pixel classifiers:
Unsupervised/Supervised
Knowledge-based/context
eCognition:
ttp://

15. Feature based / segmentation software
Feature Analyst for ESRI and ERDAS
PCI Feature ObjeX (FOX)
SPRING:

16. Idrisi: Segmentation thresholds

17. Results

18. Free image processing software http://www. maproom. ruc

19. Free viewers See also for more remote sensing software: