Image Processing (imgproc module)

Basic

• Basic Drawing
• Random generator and text with OpenCV
• Smoothing Images
• Eroding and Dilating
• More Morphology Transformations
• Hit-or-Miss
• Extract horizontal and vertical lines by using morphological operations
• Image Pyramids
• Basic Thresholding Operations
• Thresholding Operations using inRange

Transformations

• Making your own linear filters!
• Adding borders to your images
• Sobel Derivatives
• Laplace Operator
• Canny Edge Detector
• Hough Line Transform
• Hough Circle Transform
• Object detection with Generalized Ballard and Guil Hough Transform
• Remapping
• Affine Transformations

Histograms

• Histogram Equalization
• Histogram Calculation
• Histogram Comparison
• Back Projection
• Template Matching

Contours

• Finding contours in your image
• Convex Hull
• Creating Bounding boxes and circles for contours
• Creating Bounding rotated boxes and ellipses for contours
• Image Moments
• Point Polygon Test

Others

• Image Segmentation with Distance Transform and Watershed Algorithm
• Out-of-focus Deblur Filter
• Motion Deblur Filter
• Anisotropic image segmentation by a gradient structure tensor
• Periodic Noise Removing Filter