gpiv_imgproc(1) [debian man page]

GPIV_IMGPROC(1) 					      General Commands Manual						   GPIV_IMGPROC(1)

NAME

       gpiv_imgproc - Image processing program for (PIV) images.

SYNOPSIS

       gpiv_imgproc  [-b N] [--filter N] [-h | --help] [-p | --print] [-o N | --operation N] [-t N | --threshold N] [-w N] [-v | --version] [file-
       name] < stdin > stdout

DESCRIPTION

       gpiv_imgproc processes, filters or converts images in order to improve the interrogation  for  Particle	Image  Velocimetry.   gpiv_smooth:
       smoothing  filter,  gpiv_hilo  : high-low filter, gpiv_clip: clipping, gpiv_fft: Fast Fourier Transform, gpiv_invfft: Inverse  Fast Fourier
       Transform, gpiv_highpass: high-pass filtering gpiv_getbit: get bit bumber.  gpiv_mktestimg: generates test image-pair for PIV

       The parameters read from the configuration resources (containing the key GPIV_IMGPROC) may be overruled by the  command	line  options,	as
       explained below.

Options
       -b N   In case of using gpiv_getbit N denotes the bit number [0, .., 7]

       --filter N
	      Image filter to be applied: make test image (N=0), smoothing (N=1), high-low filtering (N=2), clipping (N=3), fft (N=4), inverse fft
	      (N=5), lowpass filter (N=8), highpass filter (N=9), getbit (N=10).

       -h | --help
	      On-line help

       -o N | --operation N
	      In case of using gpiv_smooth: set pixel equal to the mean of the window value (N0), subtract mean from from  pixel  (N1)	add  (N2),
	      multiply (N3) or divide (N4)

       -t N | --threshold N
	      In case of using gpiv_clip: threshold value to be set to zero

       -v | --version
	      Print version information on standard output, then exit successfully.

       -w N   window size (default: 15)

       filename
	      Input image filename. Overrides stdin and stdout with the full filename of the image. Output will be written to filename.png. Param-
	      eters are stored in filename.par and may be used for future use by including them in ./gpivrc. If stdin and  stdout  are	used,  the
	      input is expected to be a PNG formatted image.

       SEE ALSO
	      gpivtools

AUTHOR

       Gerber Van der Graaf

								  7 November 2006						   GPIV_IMGPROC(1)

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)