Delete flowio.py

flowio.py

@@ -1,118 +0,0 @@
-'''
-python by:  youngjung uh, Clova ML, Naver
-contact:    [email protected]
-date:       17 Dec 2018
-
--------------------------------------------------------------------
----- below comment came from the original (readFlowFile.m) -------
----- below comment came from the original (writeFlowFile.m) -------
--------------------------------------------------------------------
-readFlowFile read a flow file FILENAME into 2-band image IMG
-writeFlowFile writes a 2-band image IMG into flow file FILENAME
-
-  According to the c++ source code of Daniel Scharstein
-  Contact: [email protected]
-
-  Author: Deqing Sun, Department of Computer Science, Brown University
-  Contact: [email protected]
-  $Date: 2007-10-31 15:36:40 (Wed, 31 Oct 2006) $
-
-Copyright 2007, Deqing Sun.
-
-                        All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose other than its incorporation into a
-commercial product is hereby granted without fee, provided that the
-above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation, and that the name of the author and Brown University not be used in
-advertising or publicity pertaining to distribution of the software
-without specific, written prior permission.
-
-THE AUTHOR AND BROWN UNIVERSITY DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ANY
-PARTICULAR PURPOSE.  IN NO EVENT SHALL THE AUTHOR OR BROWN UNIVERSITY BE LIABLE FOR
-ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-'''
-
-import os
-import numpy as np
-from struct import pack, unpack
-
-
-def readFlowFile(fname):
-    '''
-    args
-        fname (str)
-    return
-        flow (numpy array) numpy array of shape (height, width, 2)
-    '''
-
-    TAG_FLOAT = 202021.25  # check for this when READING the file
-
-    ext = os.path.splitext(fname)[1]
-
-    assert len(ext) > 0, ('readFlowFile: extension required in fname %s' % fname)
-    assert ext == '.flo', exit('readFlowFile: fname %s should have extension ''.flo''' % fname)
-
-    try:
-        fid = open(fname, 'rb')
-    except IOError:
-        print('readFlowFile: could not open %s', fname)
-
-    tag     = unpack('f', fid.read(4))[0]
-    width   = unpack('i', fid.read(4))[0]
-    height  = unpack('i', fid.read(4))[0]
-
-    assert tag == TAG_FLOAT, ('readFlowFile(%s): wrong tag (possibly due to big-endian machine?)' % fname)
-    assert 0 < width and width < 100000, ('readFlowFile(%s): illegal width %d' % (fname, width))
-    assert 0 < height and height < 100000, ('readFlowFile(%s): illegal height %d' % (fname, height))
-
-    nBands = 2
-
-    # arrange into matrix form
-    flow = np.fromfile(fid, np.float32)
-    flow = flow.reshape(height, width, nBands)
-
-    fid.close()
-
-    return flow
-
-def writeFlowFile(img, fname):
-    TAG_STRING = 'PIEH'    # use this when WRITING the file
-
-    ext = os.path.splitext(fname)[1]
-
-    assert len(ext) > 0, ('writeFlowFile: extension required in fname %s' % fname)
-    assert ext == '.flo', exit('writeFlowFile: fname %s should have extension ''.flo''', fname)
-
-    height, width, nBands = img.shape
-
-    assert nBands == 2, 'writeFlowFile: image must have two bands'
-
-    try:
-        fid = open(fname, 'wb')
-    except IOError:
-        print('writeFlowFile: could not open %s', fname)
-
-    # write the header
-    # fid.write(TAG_STRING.encode(encoding='utf-8', errors='strict'))
-    # code = unpack('f', bytes(TAG_STRING, 'utf-8'))[0]
-    # fid.write(pack('f', code))
-    fid.write(bytes(TAG_STRING, 'utf-8'))
-    fid.write(pack('i', width))
-    fid.write(pack('i', height))
-
-    # arrange into matrix form
-    tmp = np.zeros((height, width*nBands), np.float32)
-
-    tmp[:, np.arange(width) * nBands] = img[:, :, 0]
-    tmp[:, np.arange(width) * nBands + 1] = np.squeeze(img[:, :, 1])
-
-    fid.write(bytes(tmp))
-
-    fid.close()