gpiv_aint(1) Calculates mean image intensity at each interrogation area.


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.

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.


The program uses netpbm.


Gerber Van der Graaf