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_MANIPIV(1) 					      General Commands Manual						   GPIV_MANIPIV(1)

NAME

       gpiv_manipiv, gpiv_fasty, gpiv_flipx, gpiv_flipy, gpiv_revert, gpiv_rot90, gpiv_rot180 - Simple data manipulation tool for PIV data.

SYNOPSIS

       gpiv_manipiv  [-h  |  --help]  [-p | --print] [-v | --version] [-fi x0 y0 x1 y1] [-no_fi | --pass x0 y0 x1 y1] [-fy] [-r] [--rev] [-x] [-y]
       [filename] < stdin > stdout

DESCRIPTION

       gpiv_manipiv manipulates order and positions of PIV data, mirrors (flips) the data in horizontal (x) or	vertical  (y)  direction,  rotates
       over 90 and 180 degrees. As rotating over 180 degrees is identic to flipping over x as well as over y-direction, the program must be called
       twice or must be called once by rot180.

       The parameters read from the configuration resources (containing the key POST) may be overruled by the command line options,  as  explained
       below. In case an alias name of gpiv_manipiv has been used, all non-relevant parameters are disabled.

Options
       -fi x0 y0 x1 y1
	      filters out data from a piv data stream from location (x0,y0) to (x1,y1). Filtering only implies setting the peak number to -1.

       -no_fi | --pass x0 y0 x1 y1
	      filters  out  all data, except those from (x0,y0) to (x1,y1). This option is the opposite of -fi. Filtering only implies setting the
	      peak number to -1.

       -fy    Returns fast running y-positions of data that are originally written with fast running x-positions. All  other  variables  (particle
	      displacements, snr, peak#) are at the new positions, too. Identic to fasty.

       -h | --help
	      On-line help.

       -p | --print
	      Prints  parameters, command line options and input and output filenames to stdout. The output is identic of filename.par, in case -f
	      is used.

       -r     Rotates the data over 90 degrees. Identic to rot90.

       --rev  Reverts array indexes of output data for getting reversed order.	This results into high to low running  positions  or  vice  versa.
	      Identic to revert.

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

       -x     Flips the data in x-direction (vertical axis). Identic to flipx.

       -y     Flips the data in y-direction (horizontal axis). Identic to flipy.

       filename
	      Input  PIV  data	file.  Overrides  stdin  and  stdout. Output will be written to filename.ma.piv. The parameters will be written or
	      appended to filename.par and may be used for future use by including them in ./gpivrc.

       SEE ALSO
	      gpivtools

AUTHOR

       Gerber Van der Graaf

								  8 November 2006						   GPIV_MANIPIV(1)