The Fast Bilateral Filter (#1819)
PR is created by: berak <px1704@web.de>
based on work https://github.com/opencv/opencv_contrib/pull/1317
* fbs_filter v1.0 has been contributed
* use boost unordered_map
* add brief description for fbs_filter
* fix format
* fix channels bug
* modify doc for fbs_filter
* check c++ 11
* asDiagonal -> diagonal
* rosolve warning
* fix eigen3 dependency
* Eigen/Core
* test HEAV_EIGEN
* setZero bug
* unordered_map test
* fix macro bug
* fix boost not found
* fix eigen macro bug
* fix eigen macro bug
* fix eigen macro bug
* fix eigen macro bug
* add test file
* fix test macro
* fix test macro
* add test
* add test
* add sample colorize
* fix macro
* fix colorize.cpp
* fix colorize.cpp
* fix colorize.cpp
* fix colorize.cpp
* add fbs filter demo
* add fbs filter demo
* add fbs filter demo
* use fgsfilter for guess
* add parameter num_iter and max_tol
* add a option for colorize sample
* add bibtex
* add bibtex
* fix a colorize demo bug
* size optimize
* taking over the fast bilateral solver
* taking over the fast bilateral solver
* try to fix test_fbs_filter
* missed a bib bracket