2 GPIV is a graphic user interface for analyzing images obtained from a
3 fluid flow that has been seeded with tracer particles by the so-called
4 Particle Image Velocimetry technique. It is meant to have a quick
5 overview of the parameters of all piv processes, easily changing them,
6 running the processes and visualizing their results in an interactive
7 way. It uses LIBGPIV, which contains the main routines for data in-and
8 output, processing etc. The software is written in ANSI-C under the
9 LINUX operating system by using the GTK/GNOME libraries.
11 GPIV is Free Software licensed under the GNU
12 Public license terms. See the COPYING file for the license.
14 The main web page can be found at: http://gpiv.sourceforge.net/
18 Compilation and installation
19 ============================
21 The General instructions of compilation and installation can be found
22 in INSTALL. There are some additional configuration options for this
23 program, as well. These are:
27 --enable-img-width=WIDTH
28 --enable-img-height=HEIGHT
32 An explanation of these options is printed with ./configure --help.
41 - Data storage in ASCII format or HDF version 5 format.
42 - Loading of images with with file-open menu, "open" button or with "drag and
43 drop" from the gnome file-manager "nautilus" into the buffer list.
44 - Quick execution of all enabled process on all selected buffers.
49 - Visualization of interrogation area contours and highlighting them when
51 - Displays pointer position and belonging estimated values.
56 - Sending trigger pulses over the parallel port by using Real Time Linux and
58 - Obtaining images from a IEEE1394 (Firewire) IIDC_Compliant CCD camera
62 - shows image name, dimensions and type of correlation (cross or auto).
63 - defining of spatial and time scales, position of image within the experiment.
64 - Adding and updating header information (date of creation, project, comment
70 - Interrogation at the entire image or at a defined region within the image
71 frames, resulting into a displacement field on a rectangular grid.
72 - Interrogation at a single arbitrary point, along a vertical or horizontal
74 - Re-interrogation of a single area with, different parameters.
75 - Dragging a single interrogation area from the rectangular grid.
76 - Arbitrary interrogation area sizes.
77 - Global pre-shifting.
78 - Local pre-shifting or zero offsetting of the interrogation areas.
79 - Forward and central interrogation scheme.
80 - Adaptive interrogation area sizes to obtain high resolution and dynamic range.
81 - Different interpolation schemes for sub-pixel estimation.
82 - Cross and auto correlation.
83 - Defining the order of correlation peak to be used as estimator.
84 - Visualization of interrogation area's and correlation function.
89 - Manually enabling and disabling of PIV estimators interactively.
90 - Checking on peak-locking effects.
91 - Validation on outliers by snr value or median test.
96 - apply time and spatial scaling
97 - calculate statistics and subtraction of mean values from estimators
98 - calculation of vorticity and strain.