AForge.Imaging NuGet Package

Linear color correction filters (RGB/HSL/YCbCr correction, brightness/contrast/saturation correction);
Nonlinear color correction filters (contrast stretch, histogram equalization, color remapping, gamma correction);
Image re-coloring filters (grayscale, sepia, hue modifier, rotate channels, invert);
Pixel filtering by color (RGB, HSL, YCbCr color spaces);
Color channels manipulations (RGB and YCbCr color spaces);
Color reduction (including color dithering);
Binarization filters (threshold, threshold with carry, ordered dithering, Bayer dithering, Floyd-Steinberg dithering, Burkes dithering, Jarvis-Judice-Ninke dithering, Sierra dithering, Stucki dithering);
Adaptive binarization (simple image statistics, iterative thresholding, Otsu thresholding);
Adaptive local thresholding;
Convolution filters (mean, blur, sharpen, edges, Gaussian blur, custom convolution filters);
Mathematical morphology filters (erosion, dilatation, opening, closing, top hat, bottom hat, hit-and-miss);
Edge detectors (homogeneity, difference, sobel, canny);
2 source filters (merge, intersect, add, subtract, difference, move towards, morph, thresholded difference, thresholded euclidean difference);
Blobs processing (counting, extraction, filtering, connected component labeling);
Filling holes in binary images;
Corner detectors (Moravec, Susan);
Quadrilateral transformation and corners' finding;
Resize and rotation (nearest neighbor, bilinear, bicubic);
Transformation to/from polar coordinates;
Hough transformation (line and circle transformations);
Exhaustive template and block matchin;
Image color statistics (RGB, HSL, YCbCr) and vertical/horizontal statistics (RGB);
Smoothing filters (Median, Mean, Conservative Smoothing, Adaptive Smoothing, Bilateral);
Texture.