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Fernerkundung I (Digitale Bildverarbeitung) - Friedrich-Schiller ...

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portable among Unix systems and is freely distributable. The name Image Processing<br />

Workbench reflects the influence the Unix system had on the design of IPW, since an<br />

early version of Unix was called the `Programmer's Workbench'.<br />

Individual Unix and IPW programs are "tools" which may be used together to perform<br />

more complicated operations. IPW is a set of programs, written in C, that form an<br />

extension of Unix. Therefore, IPW programs can be used in combination with Unix<br />

programs, and IPW has no need to duplicate basic Unix functions such as file<br />

management and command interpretation.<br />

Unix programs are executed by typing the name of the program as a command to the<br />

shell. Parameters are specified on the command line, rather than in response to user<br />

prompts. The command syntax for IPW is patterned after the proposed standard for Unix<br />

system commands. In Unix and IPW most input and output are on preconnected<br />

channels, the standard input (stdin) and the standard output (stdout). "Pipes" connect<br />

the standard output of one command to the standard input of the next. The use of pipes<br />

avoids intermediate files and speeds the execution time since the second program in the<br />

pipeline may start running as soon as output from the first program begins.”<br />

(http://www.icess.ucsb.edu/~ipw2/crrel.man/1/ipw.html)<br />

Idrisi:<br />

(http://www.clarklabs.org/IdrisiSoftware.asp?cat=2):<br />

Raster Vector-GIS Funktionalität, z.T mit eingeschränkter Kompatibilität mit<br />

kommerziellen Datenformaten.<br />

ILWIS:<br />

ILWIS integrates image, vector and thematic data in one package on the desktop. ILWIS<br />

delivers import/export, digitizing, editing, analysis and display of data as well as<br />

production of quality maps and geostatistical tools. As from 1st January 2004 ILWIS<br />

software will be distributed solely by ITC as shareware to all users irrespective of their<br />

relation with ITC. Documentation is online available.<br />

MATLAB:<br />

MATLAB ® und die Image Processing Toolbox unterstützen eine Vielzahl fortschrittlicher<br />

<strong>Bildverarbeitung</strong>sfunktionen. Es können Bildmerkmale extrahieren und analysieren,<br />

Merkmalmessungen berechnen und Filteralgorithmen angewendet werden.<br />

MATLAB bietet eine umfangreiche Entwicklungsumgebung, mit Schwerpunkten im<br />

Bereich Algorithmusentwicklung und Anwendungseinsatz, Visualisierung, Bildanalyse und<br />

Verbesserung und Datenim- und export.<br />

Durch Zugriff auf andere Extensions von MATLAB (Neural Network Toolbox u.a.) ist eine<br />

Ausweitung in andere Methodenbereiche möglich. Durch die stark auf Programmierung<br />

basierende Struktur von MATLAB ist diese Software stark vertreten in den technischen<br />

Wissenschaften (Engineering). Ausgedehnte Dokumentation, Software portiert auf<br />

unterschiedliche Betriebssysteme, an vielen Universitäten verfügbar i.d.R. über beliebig<br />

viele Campuslizenzen. Ernsthafte Alternative zu IDL für die Algorithmenentwicklung,<br />

jedoch ohne fertige Standard –<strong>Fernerkundung</strong>sroutinen. http://www.mathworks.de<br />

/applications/imageprocessing/.<br />

Andere interessante Softwarepakete im GIS/RS Sektor: CARIS, MAPINFO, MANIFOLD,<br />

SMALLWORLD, GMT, VARIOWIN, GSTAT, GSLIB.

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