fixing the orthorectification bug that surfaces in the curriculum
fixing the orthorectification bug that surfaces in the curriculum

The fix was to parse and use the ipe specified image bounds as the output bounds rather than self.bounds.  I don't know why these were different, I don't see where that could have happened, so there may be another bug in here somewhere, but for now ortho is fixed.

DigitalGlobe/gbdxtools,DigitalGlobe/gbdxtools