Edge Detection

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Edge detection methods for finding object boundaries in images

Edge detection is an image processing technique for finding the boundaries of objects within images. It works by detecting discontinuities in brightness. Edge detection is used for image segmentation and data extraction in areas such as image processing, computer vision, and machine vision.

Common edge detection algorithms include Sobel, Canny, Prewitt, and Roberts methods.

Image segmentation using the Sobel method
Image segmentation using the Sobel method.
Image segmentation using the Canny method
Image segmentation using the Canny method.

For more details, see Image Processing Toolbox.

Examples and How To

Software Reference

See also: image analysis, color profile, image thresholding, image enhancement, image reconstruction, image segmentation, image transform, image registration, digital image processing, image and video processing, Steve on Image Processing (blog), image registration