Wrap `computeNormalsPC3d()` for python

- Update its usage

Getting layer inputs (#1006)

They are initialized only in functors, not in inherited fields.

fix the order of parameter while using cv::omnidir::stereoReconstruct

MedianFlow: fix status not erased in filterPointsInVectors, update thresholds in tests

fix the order of parameter while using cv::omnidir::stereoReconstruct

issue #980 resolves - Some module has a round error similar to #975.  (#981)

* round function changes to cvRound

Minor changes to fix lower visual studio version build errors.

* round function changes to cvRound

Minor changes to fix lower visual studio version build errors.

* round function changes to cvRound

Minor changes to fix lower visual studio version build errors.

* Fix several issues in TrackerMedianFlow implementation

Particularly, add possibility to tune optical flow parameters for a median
flow tracker.

* Improve code of TrackerMedianFlow

Replace a lot of calls of std::vector::erase by one call of
std::remove_if.

* Delete unused code, use norm from OpenCV

* medianFlow:turn getMedian method into function, small code cleanup

* TrackerMedianFlow:fixes in parameters I/O, add test for them

* TrackerMedianFlow:replace double with float in temp buffers

* Fix indentation

* TrackerMedianFlow:add absent parameter case handling in read()

* TrackerMedianFlow:use ROI instead of copy when getting a patch

* TrackerMedianFlow:don't calc image pyramids 2 times

* MedianFlowTracker: use cvIsNan()

* MedianFlow: refactor vector filtration code

* MedianFlow: change if statements layout in filterPointsInVectors

since rest of the patterns are single channel, the masks should be as
well.

GSOC'16 - DNN modern (#720)

* dnn_modern module sketelon

add FindTinyCNN.cmake and setup CMakeLists.txt

add find TBB and NNPACK to CMakeLists.txt

add caffe converter skeleton

add simple sample

eval method return scores

Update README.md

Update README.md

Update README.md

* update for tiny-dnn package

* add QUIET attribute to CMake to find tiny-dnn

* update files due to library rename

* disable warning in cmake

* replace cnn_size_t -> size_t

* disable serializer, remove Caffe dependency and remove tiny-dnn target

* check CMake version to enable/disable the module

* add -Wno-erro in module target

* update README.md with tiny-dnn

* remove redunadant CMake codes for TBB and OMP

* update CMake to enable C++11 compiler

* sync CMake compiler options with upstream project

* remove unused FindTBB.cmake

* minor fix to add const variables

* tiny-cnn -> tiny-dnn