4.x
Tutorial Filter2D
Tutorial Hough Circles
Tutorial Hough Lines
Tutorial Laplace Operator
Tutorial Make Border
Tutorial Sobel Derivatives
Add Java and Python code for the following imgproc tutorials: Canny, Remap, threshold and threshold inRange. Use HSV colorspace instead of RGB for inRange threshold tutorial.
Add Java and Python code for AKAZE local features matching tutorial. Fix incorrect uses of Mat.mul() in Java code.
Add Java and Python code for the following imgproc tutorials: Affine Transformations, Histogram Equalization, Histogram Calculation, Histogram Comparison, Back Projection.