orcropus-gpageseg: UnboundLocalError: local variable 'gray' referenced before assignment

[wrznr]

Current Behavior

If I use the CLI option --gray and no .nrm.png is provided, an UnboundLocalError is thrown.

Possible Solution

In line 380 of ocropus-gpageseg, add one indent level to the checktype test and an error message which complains about the missing grayscale file (since it is a prerequisite for --gray, cf. line 431). Also an update of the CLI option help might be useful.

I would have liked to create a pull request for that one. But it is not possible to fork the same github project twice (https://stackoverflow.com/questions/6675994/is-it-possible-to-fork-a-fork-in-github) and I already forked the fork kraken.

[zuphilip]

Can you create a PR from a different branch, i.e. something like

git remote add ocropy https://github.com/tmbdev/ocropy.git
git fetch ocropy
git checkout -b ocropy ocropy/master

?

[zuphilip]

Fixed in #287