waldboost_detector train: avoid failed asserts while training by exiting early

* Avoids a failed assert which crashes training

* xobjdetect: improve waldboost messages

If 'lambda <= 0' or 'kappa <= 1.0', the stop condition for the solver is never met because beta would not be increasing.

83fc27cb

* Fix bug: Invalid Syntax at line 14(draw_motion_comp method)

* Fix bug: TypeError- integer argument expected, got float

* Fix bug: clean up the camera by adding .release()

Moved aruco dictionary globals into getPredefinedDictionary so constructed on first use, to allow lazy-loading of the opencv DLL

tesseract 4.x headers require C++11 (can't be used by OpenCV 3.4 without C++11)

  * limit the affect by using HAVE_CUDA

Enhance EdgeAwareInterpolation no. matches limitation (#2209)

* sparse_match_interpolators EdgeAwareInterpolation - enhance limitation of the maximal number of matches to be interpolated from SHORT_MAX to INT_MAX by substituting short by int types

* sparse_match_interpolators EdgeAwareInterpolation - enhance limitation of the maximal number of matches to be interpolated from SHORT_MAX to INT_MAX by substituting short by int types

* fix wrong allocation of labels mats CV16S to CV_32S

Signed-off-by: SSE4 <tomskside@gmail.com>

add python sample

* issue-2060: implement ability to return scores for edgeboxes implementation

* issue-2060: address feedback to add some foolproofing

* doc: fix return parameter for void method

* docs: add missing parameter description