Tested on Ubuntu 18.04. I expect it might make a larger difference on older systems, because the GLIBC memory allocator used to be very slow (it got a per-thread cache in 2.26).
Implementation Details
I'm not sure what's the minimum Boost version we support, so I left in a path for pre-1.58, where small_vector is not available.
Additional notes
This is technically a breaking change:
the BCOInterpolateImageFunctionBase::CoefContainer type is public and its type has changed
BCOInterpolateImageFunctionBase::EvaluateCoef is no longer virtual
Copyright
The copyright owner is Laurențiu Nicola / CS ROMANIA and has signed the ORFEO ToolBox Contributor License Agreement.
Check before merging:
All discussions are resolved
At least 2 votes from core developers, no vote.
The feature branch is (reasonably) up-to-date with the base branch
Dashboard is green
Copyright owner has signed the ORFEO ToolBox Contributor License Agreement
Optionally, run git diff develop... -U0 --no-color | clang-format-diff.py -p1 -i on latest changes and commit
