[python3] Use floor division where necessary.

[hgaiser]

As per the docs, some divisions need to be floored (as opencv expects integers in these places). This change is python 2 / 3 compatible.

[vrabaud]

Thx for //
For BytesIO, would you be able to read something that was written with StringIO ?

[hgaiser]

Not sure to be honest. The main issue was that the StringIO was used to write an encoded image (as a sequence of bytes) and the yaml and text files (as a string). In python2, a bytes array or string array are the same thing, which is why StringIO was applicable. In python3 however they are two separate things (try to evaluate bytes is str in python2/3). Therefore, StringIO was giving an error when writing the image, since it was expecting a string but received a bytesarray. The solution I chose here was to write the yaml files as bytes too and use a BytesIO instead.

Apologies for not explaining this change earlier.

[vrabaud]

Can you just remove that commit for now and make another one with StringIO please ? I want to merge the first commit for now and try the other one.

[hgaiser]

Done.

[hgaiser]

Any update on this ?

[vrabaud]

Thx for cleaning it !

[vrabaud]

time for doing one with StringIO :)

[hgaiser]

No problem :) thanks for merging.