Document source: https://docs.opencv.org/master/d7/da8/tutorial_table_of_content_imgproc.html
A_SmoothingImages: - Smoothing Images
B_ErodeDialation: # change the shape of objects - Eroding and Dilating - More Morphology Transformations
C_HitMiss # find patterns in binary images - Hit-or-Miss
D_LinesDetection # extract horizontal and vertical lines - Extract horizontal and vertical lines by using morphological operations
E_Pyramids # resizing - Image Pyramids
F_Thresholding # using inRange function, masking and filtering. - Basic Thresholding Operations - Thresholding Operations using inRange
G_Border - Adding borders to your images
H_SobelDerivatives # calculate gradients, detect edges - Sobel Derivatives
I_Laplace # detect edges - Laplace Operator
J_CannyEdge # detect edges - Canny Edge Detector
K_HoughLine # detect lines - Hough Line Transform
L_HoughCircle # detect circles - Hough Circle Transform
M_Remapping # manipulate pixels locations - Remapping
N_Affine # rotate, translate and scale - Affine Transformations
O_HistogramEqualization # improve the contrast - Histogram Equalization
Q_HistogramComparison # calculate metrics between histograms - Histogram Comparison