Feature Detection

Using a variety of state-of-the-art methods, Mathematica provides immediate functions for detecting and extracting features in images and other arrays of data. Mathematica supports specific geometrical features such as edges and corners, as well as general keypoints that can be used to register and compare images.

Edge and Line Detection

EdgeDetect — detect edges in an image using Canny and other methods

CrossingDetect , ContourDetect — detect zeros and zero crossings

ImageLines — find Hough lines in an image

GradientFilter   ▪ LaplacianGaussianFilter   ▪ ImageFilter   ▪ ImageConvolve

Points-of-Interest Detection

ImageKeypoints — find keypoints and associated feature vectors in an image

CornerFilter — compute a measure for the presence of a corner

ImageCorrespondingPoints — find corresponding keypoints in pairs of images

Region Detection

MinDetect , MaxDetect — detect regional and extended minima and maxima

Radon , InverseRadon — Radon and inverse Radon transforms

TextRecognize — extract characters from an image

MORE ABOUT