gpiv_aint (1)

gpiv_aint [-h | --help] [-p | --print] [-s | --second] [-V | --verbose] [-v | --version] filename

For each Interrogation Area of an image, gpiv_aint calculates the mean image intensity. Depending on the settings of the interrogation scheme, the Interrogation Area's may be shifted with magnitude of the piv estimators (if they exist) or the image may be deformed before the intensity is calculated.

This program uses the IMG, PIV and POST parameters. The default settings may be overruled by the command line options, as explained below.

-h | --help

On-line help.

-p | --print

Prints parameters to stdout.

-s | --second

Calculates the image intensitites for the second image frame in case of double-frame image pairs.

-V | --verbose

Prints data of interrogation area's and resulting mean.

-v | --version

Print version information on standard output, then exit successfully.

filename

Full name of the image file. Image format might be: png, raw binary (.r), hdf5 (.hdf), gif, tif, bmp or pgm. The piv estimators are read from filename.piv The settings are written to filename.par. output will be stored in filename.ain.

gpivtools

The program uses netpbm.

Gerber Van der Graaf