Edge Detection Techniques in MATLAB: Sobel, Canny, Log, and Gray Scale Processing

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A quick video of edge detection in Matlab and various methods available for edge detection in images with the help of Matlab. There are seven methods available for edge detection in Matlab listed below
CANNY
PREWITT
SOBEL
ROBERTS
LOG
ZERO CROSSING
APPROXCANNY
In this video, you also learn about the various commands like imread, imshow, rgb2gray etc

Below is the script for you to practice this on your own.

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%Script for Edge detection in Matlab
clc;

I=imread('baby.jpg');
imshow(I);
BW=rgb2gray(I);

BW1=edge(BW,'canny');
pause(2);
imshow(BW1);
text(20,20,'CANNY','Color','red','FontSize',14)
pause(2);

BW2=edge(BW,'prewitt');
pause(2);
imshow(BW2);
text(2,8,'PREWITT','Color','red','FontSize',14)
pause(2);

BW3=edge(BW,'sobel');
pause(2);
imshow(BW3);
text(2,8,'SOBEL','Color','red','FontSize',14)
pause(2);

BW4=edge(BW,'Roberts');
pause(2);
imshow(BW4);
text(2,8,'ROBERTS','Color','red','FontSize',14)
pause(2);


BW5=edge(BW,'log');
pause(2);
imshow(BW5);
text(2,8,'LOG','Color','red','FontSize',14)
pause(2);

BW6=edge(BW,'zerocross');
pause(2);
imshow(BW6);
text(2,8,'ZERO CROSS','Color','red','FontSize',14)
pause(2);


BW7=edge(BW,'approxcanny');
pause(2);
imshow(BW7);
text(2,8,'APPROX CANNY','Color','red','FontSize',14)
pause(2);

imshow(I);
%End of script