find corners of object in image using canny and sobel in matlab

To find the corners of an object in an image using the Canny and Sobel operators in MATLAB, you can follow these steps:

1. Read the image using the imread function.

main.m
img = imread('your_image.jpg');
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2. Convert the image to grayscale using the rgb2gray function.

main.m
img_gray = rgb2gray(img);
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3. Apply the Sobel operator to the image using the edge function.

main.m
img_sobel = edge(img_gray, 'Sobel');
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4. Apply the Canny edge detector to the image using the edge function.

main.m
img_canny = edge(img_gray, 'Canny');
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5. Combine the Sobel and Canny edge images using element-wise multiplication.

main.m
img_combined = img_sobel .* img_canny;
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6. Find the corners in the combined image using the detectHarrisFeatures function.

main.m
corners = detectHarrisFeatures(img_combined);
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7. Display the original image with the detected corners using the insertMarker function.

main.m
imshow(img);
hold on;
plot(corners.selectStrongest(50));
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Adjust the input parameters of the functions according to your needs. This code should give you a basic idea of how to find the corners of an object in an image using the Canny and Sobel operators in MATLAB.