snark python.imaging.write() doesn't allow to change the stream

[spotiris]

In snark/python/snark/imaging/cv_image.py

Currently the write() function is
def write( image, flush=False ):
which writes to stdout; it should be changed to:
def write( image, flush=False, file=sys.stdout ):
to allow writing to streams other than stdout.

Also there is a write() function but no read(), only a reading iterator is provided.
There should be a read() function that is referenced in the iterator.

[navidp]

I fixed the write.
The iterator is the read, because we can read multiple images from a stream. (This is not the same as reading e.g. a jpeg file)
for image in iterator(sys.stdin):
#do something with image
#then write