added missing cuda imgproc standalone functions

[diegohce]

Added functions:

AlphaComp
GammaCorrection
SwapChannels
CalcHist
CalcHist_WithParams
EqualizeHist
EvenLevels
HistEven
HistRange
BilateralFilter
BlendLinear
MeanShiftFiltering
MeanShiftProc
MeanShiftSegmentation

[deadprogram]

Hello @diegohce thank you very much for another great PR.

One small problem is that I think we need both the XXX and XXXWithStream versions for each CUDA function.

Please see

gocv/cuda/arithm.go

Lines 13 to 28 in f684ee7

	// Abs computes an absolute value of each matrix element.
	//
	// For further details, please see:
	// https://docs.opencv.org/master/d8/d34/group__cudaarithm__elem.html#ga54a72bd772494ab34d05406fd76df2b6
	func Abs(src GpuMat, dst *GpuMat) {
	C.GpuAbs(src.p, dst.p, nil)
	}
	// AbsWithStream computes an absolute value of each matrix element
	// using a Stream for concurrency.
	//
	// For further details, please see:
	// https://docs.opencv.org/master/d8/d34/group__cudaarithm__elem.html#ga54a72bd772494ab34d05406fd76df2b6
	func AbsWithStream(src GpuMat, dst *GpuMat, stream Stream) {
	C.GpuAbs(src.p, dst.p, stream.p)
	}

for an example.

[diegohce]

Hello @diegohce thank you very much for another great PR.

One small problem is that I think we need both the XXX and XXXWithStream versions for each CUDA function.

Please see

gocv/cuda/arithm.go

Lines 13 to 28 in f684ee7

	// Abs computes an absolute value of each matrix element.
	//
	// For further details, please see:
	// https://docs.opencv.org/master/d8/d34/group__cudaarithm__elem.html#ga54a72bd772494ab34d05406fd76df2b6
	func Abs(src GpuMat, dst *GpuMat) {
	C.GpuAbs(src.p, dst.p, nil)
	}
	// AbsWithStream computes an absolute value of each matrix element
	// using a Stream for concurrency.
	//
	// For further details, please see:
	// https://docs.opencv.org/master/d8/d34/group__cudaarithm__elem.html#ga54a72bd772494ab34d05406fd76df2b6
	func AbsWithStream(src GpuMat, dst *GpuMat, stream Stream) {
	C.GpuAbs(src.p, dst.p, stream.p)
	}

for an example.

Hi @deadprogram , no problem, my bad.
I wIl fix it asap

[deadprogram]

Thank you very much for the additions @diegohce now merging.