text: 
  from subprocess import call
  import sys
  from os import listdir
  from os.path import isfile, join
  
  # Run alternative pipelines on the middlebury-opt-flow dataset
  
  if len(sys.argv) < 3:
    print('Usage: python middlebury-opt-flow <input_data_vers_number> <converter_version_number>')
    quit()
  
  in_version = int(sys.argv[1])
  version    = int(sys.argv[2])
  
  image_dirs = ['Dimetrodon','Grove2','Grove3','Hydrangea','RubberWhale','Urban2','Urban3','Venus']
  
  datasetpath = '/datasets/middlebury-opt-flow/'
  inputpath   = datasetpath + 'v' + str(in_version) + '/'
  outputpath  = datasetpath + 'v' +str(version)+'/'
  
  call(['mkdir',outputpath])
  
  call('make --directory ../common/ version='+str(version),shell=True)
  
  for image_dir in image_dirs:
    call(['mkdir',outputpath+image_dir])
  
    print "Converting: "+image_dir
  
    in_img0  = inputpath  +image_dir+ '/frame10.png'
    out_img0 = outputpath +image_dir+ '/frame10.png'
    call('../common/pipeline_V'+str(version)+'.o '
           +in_img0 + ' ' + outputpath, shell=True)
    call("mv "+outputpath+'output.png '+out_img0,shell=True);
  
    in_img1  = inputpath  +image_dir+ '/frame11.png'
    out_img1 = outputpath +image_dir+ '/frame11.png'
    call('../common/pipeline_V'+str(version)+'.o '
           +in_img1 + ' ' + outputpath, shell=True)
    call("mv "+outputpath+'output.png '+out_img1,shell=True);
  
  
  
  
  