gpiv_aint(1) [debian man page]
GPIV_AINT(1) General Commands Manual GPIV_AINT(1) NAME
gpiv_aint - Calculates mean image intensity at each interrogation area. SYNOPSIS
gpiv_aint [-h | --help] [-p | --print] [-s | --second] [-V | --verbose] [-v | --version] filename DESCRIPTION
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. Options -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. SEE ALSO gpivtools NOTES
The program uses netpbm. AUTHOR
Gerber Van der Graaf 7 November 2006 GPIV_AINT(1)
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GPIV_PROCESS-CHAIN(1) General Commands Manual GPIV_PROCESS-CHAIN(1) NAME
gpiv_process-chain - Processes a pipe of Gpiv-tool command's. SYNOPSIS
gpiv_process-chain [-af string] [-h | -help] [-n | -none] [-c | -clean] [-fik] [-p | -print] [-pf -string] [-proc_*] [-t format] [-v | -version] filename DESCRIPTION
Gpiv_process-chain processes a pipe of gpiv commands. Image evaluation/interrogation with gpiv_rr is always included, image recording may be prepended before interrogation, validation and post-processes may be appended to the chain. The filename represents the name of the image to be evaluated. The file naming conventions are idententic to the output of the individual Gpivtools programs: in case the output are (validated/scaled) PIV data, the data will be directed to filename.piv, with -proc_vorty the output will be called filename.vor, with -proc_nstrain the output will be called filename.nstr and, finally, with with -proc_sstrain the output will be called filename.sstr. This program does not use the parameter resources from libgpiv. Options -af string Append string to file-base name. -h | --help On-line help. -n | --none Suppresses real execution. -c | -clean Cleans up: removes raw image data and header. -fik Use fi-keyline for filtering gpiv parms from README. -p | --print Prints parameters, command line options and input and output filenames to stdout. -pf string Prepend string to file-base name. -proc_* Defines processes to be included in the chain. * is substituted by: imgrec, valid, scale, manipiv, flipx, flipy, revert, rot90, rot180 and vorty or nstrain or sstrain. Vorty, nstrain and sstrain may not be used in combination with -t gpi. -t format Image type or format: hdf (.hdf), dav (.IMG) or a type as defined by ImageMagic's convert. Default is raw binary image (.r). -v | --version Prints version information to standard output, then exits successfully. filename Input image filename. Format may be: .r, .hdf (hdf), .IMG (davis), .png, .gif, .tif or.bmp. EXAMPLES
invoking: 'gpiv_process-chain -proc_valid -proc_scale testfile.png' will actually perform: gpiv_rr < image.png | gpiv_errvec > testfile.piv invoking: 'gpiv_process-chain -proc_imgrec -proc_valid -proc_scale testfile.png' will do: gpiv_recimg | gpiv_rr | gpiv_errvec | gpiv_scale > testfile.piv SEE ALSO
gpivtools AUTHOR
Gerber Van der Graaf 19 Januari 2005 GPIV_PROCESS-CHAIN(1)