Howtosignalprocessing
The sobel operator is very similar to Prewitt operator. It is also a derivate mask and is used for edge detection.
- Which method is used for edge detection?
- What is edge detection used for?
- Which derivative is used for edge detection?
- Which filter is best for edge detection?
Which method is used for edge detection?
Common edge detection algorithms include Sobel, Canny, Prewitt, Roberts, and fuzzy logic methods. Image segmentation using the Sobel method. Image segmentation using the Canny method. Image segmentation using a Fuzzy Logic method.
What is edge detection used for?
Edge detection is a technique of image processing used to identify points in a digital image with discontinuities, simply to say, sharp changes in the image brightness. These points where the image brightness varies sharply are called the edges (or boundaries) of the image.
Which derivative is used for edge detection?
The 2nd derivative of an image where the image highlights regions of rapid intensity change and is therefore often used for edge detection zero crossing edge detectors.
Which filter is best for edge detection?
Sobel Operator
The sobel is one of the most commonly used edge detectors. It is based on convolving the image with a small, separable, and integer valued filter in horizontal and vertical direction and is therefore relatively inexpensive in terms of computations.
