Incomplete OF transform
Make OF parameters settable
Get the two images for OF
Change from tabs to spaces
I should probably follow the style of the other transforms
Propagate interest pts thru OF
Add InterestRegions transform
Reduce OF mat to one channel
First stab at HoF syntax
Discard frames in HoF
Move comment
Add initial HoG and HoGHoF
STORE should be STORED
Fix some things for HoG
HoG should add each descriptor to dst
Setting dst.file to src.file is already done by IndependentTransform::project()
InterestRegionTransform already existed as ROITransform
Add FlattenTransform to flatten a list of Templates to a single Template
Add grammar for BoVW
AggregateFrames can't be a grandchild (?)