PIVTOOLS Programs

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Command-line programs of Gpivtools

• gpiv_aint
  Calculates mean image intensity at each interrogation area..
• gpiv_combing
  Combines two images into one image file for cross-correlation.
• gpiv_errvec
  Searches erroneous vectors in a PIV data file and substitutes them with new values.
• gpiv_fi-keyline
  Filters each line that starts with a keyword.
• gpiv_hdf2piv
  Converts hdf5 PIV-data (extension .gpi) to ASCII data.
• gpiv_imgproc, gpiv_mktestimg, gpiv_smooth, gpiv_hilo, gpiv_clip, gpiv_fft, gpiv_invfft, gpiv_lowpass, gpiv_highpass, gpiv_getbit, gpiv_mktestimg
  Image processing program.
• gpiv_img2gpiv
  Converts images into raw data (extension .r) format with belonging ASCII header or into hdf format (extension .gpi).
• gpiv_manipiv, gpiv_fasty, gpiv_flipx, gpiv_flipy, gpiv_revert, gpiv_rot90, gpiv_rot180
  Simple data manipulation tool for PIV data.
• gpiv_peaklck
  Tests PIV data on the so-called peak-locking effect.
• gpiv_piv2gnuplt
  Converts PIV data to gnuplot data for generating vector plots.
• gpiv_piv2grid
  Converts PIV-derived scalar data to grid data for generating contour plots.
• gpiv_piv2hdf
  Converts ASCII PIV-data to hdf5 formatted data (extension .gpi).
• gpiv_piv2vec
  Adds header to PIV data for a vector plot with Plotmtv.
• gpiv_process-chain
  Processes a pipe of Gpivtool command's.
• gpiv_recimg
  captures images from a IIDC-compliant CCD camera with IEE1394 connection.
• gpiv_rr
  Correlates image pairs in order to obtain particle displacements for Digital Particle Image Velocimetry.
• gpiv_sca2gri
  Converts scalar data from gpiv to grid data for contour plotting with plotmtv
• gpiv_scale
  Time and spatial scaling of PIV data: converts the particle image displacements into velocities.
• gpiv_series
  Script to process a series of numbered files, eventually resi- dent in numbered directories, in an identical way. This program does not use the parameter resources as explained above.
• gpiv_suta
  Subtracts time-avaraged velocities (local mean) from the PIV estimators.
• gpiv_s-avg
  Calculates spatial mean and variances of PIV data.
• gpiv_t-avg
  Calculates time-avaraged mean and rms from a series of piv data.
• gpiv_t-avg-img
  Calculates time-averaged values from a series of images for each pixel.
• gpiv_t-corr
  Calculates the velocity correlation as function of time (Eulerian correlation) from a series PIV data sets
• gpiv_trig
  Triggers a (double Nd_YAGG) laser on a CCD camera.
• gpiv_uhisto
  Tests PIV data by printing/displaying an histogram of the horizontal particle displacements.
• gpiv_vhisto
  Tests PIV data by printing/displaying an histogram of the vertical particle displacements.
• gpiv_vorstra, gpiv_vorty, gpiv_nstrain, gpiv_sstrain
  Calculates the differential quantities vorticity, shear strain and normal strain from PIV data.