* Update samples

* Update calib3d.hpp

* Update calib3d.hpp

* Update calib3d.hpp

* Update calib3d.hpp

* kmeans: number of channels in _centers fixed

* fixedType() is checked now

* Simulated Annealing for ANN_MLP training method

* EXPECT_LT

* just to test new data

* manage RNG

* Try again

* Just run buildbot with new data

* try to understand

* Test layer

* New data- new test

* Force RNG in backprop

* Use Impl to avoid virtual method

* reset all weights

* try to solve ABI

* retry

* ABI solved?

* till problem with dynamic_cast

* Something is wrong

* Solved?

* disable backprop test

* remove ANN_MLP_ANNEALImpl

* Disable weight in varmap

* Add example for SimulatedAnnealing

Implementation of bit-exact resize. Internal calls to linear resize updated to use bit-exact version. (#9468)

Signed-off-by: Li Peng <peng.li@intel.com>

Fix a code indent bug:   cv2.imshow("detected lines", cdst)

Following were the errors in the digits_video.py
     1 ) The code was not working because data type of x was float however in "cv2.rectangle" we require integer .
     2 ) After pressing the "esc" button the image windows did not destroy
So I amended following things:
     1 ) ~converted data type of x to int.~ Used Python integer division (//)
     2 ) used cv2.destroyAllWindows() to close all windows after the press of "esc" by user.

* Adding threading in calibrate.py

* samples: update calibrate.py

getUMat()/getMat() calls are scope based. Results of these calls can't be
stored somewhere for future usage.

Add camera/video/image input for C++ DNN object detection samples. Add nice display and computation time.

Add PyInt_Check in pyopencv_dnn.hpp.