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You can directly launch JPIV via Java Web Start by hitting the symbol below. The only prerequisit is a Java Runtime Environment (JRE) on your machine (for example Sun's free of charge JRE). I use the GPL licensed OpenJDK JRE.
(last update of JPIV: November 6 2011)
Your browser might ask you whether you want to save the file or open it. Choose open and select the program javaws. The binary javaws might actually appear as Iced Tea Web Start 6, or Sun Java Web Start or the like in your program list. If Java Web Start does not work for some reason, you may try to manually download and launch jpiv. Therefore download the jar archive jpiv.jar. Then, open a terminal (like bash, xterm or the like on Linux or cmd on Windows), change into the download directory an execute the following command: java -jar -Xms128M -Xmx1024M jpiv.jar. When you start jpiv manually, please ensure, that the Java Advanced Imaging (JAI) package is installed.
You may want to add some additional functionality, like scripts for batch processing, masking, synthetic image generation, joining and splitting images, directory processing, native libraries for reading LaVision IMX and IM7 image data, and offline documentation files. Click on the symbol below to download a zip-archive (18.4 MB), extract the files to your hard drive and tell JPIV where to find the unpacked directory, as explained in the documentation section. Restart JPIV to list the scripts of the jpivlib/jsc directory in the Scripts drop-down menu.
(last update of library: September 24 2011)
The source code is available on the sourceforge subversion server:
Additionally to the jpiv source files, the directory structure also contains the NetCDF Java Library for reading synthetic image generation parameter files, the BeanShell Core Interpreter Classes for executing scripts and the Free HEP library for vector graphics export. The source code documentation will be a good companion guiding you through the code.
For testing JPIV, you might find the following images useful (0.5 MB):
To try the reconstruction of the third velocity component, please use the images below (3 MB). Reference vector fields for comparison are included, as well as a data sheet with the synthetic image generation properties.
Find more challenging test images at http://www.pivchallenge.org/.