how to extract image boundary for a color image

I need a boundary on white background with boundary black in color

Answer 1

[Gautam]

Hi @alapati pujitha

You can use the "edge" function with the "Canny" detect edges in the image

Please refer to the code below

% Read the color image
img = imread('peppers.png');

% Convert the image to grayscale
grayImg = rgb2gray(img);

% Detect edges using the Canny edge detector
edges = edge(grayImg, 'Canny');

subplot(1,2,1)
imshow(img)
title("Original Image");

subplot(1,2,2)
imshow(edges)
title("Detected Edges");