calculate gradient by applying sobel operator on image in matlab and seperable filtering in matlab

main.m
% Load the image
img = imread('my_image.jpg');

% Convert to grayscale if necessary
if size(img, 3) == 3
    img = rgb2gray(img);
end

% Apply the horizontal and vertical Sobel filters
h = fspecial('sobel')';
v = fspecial('sobel');
img_h = imfilter(double(img), h, 'replicate');
img_v = imfilter(double(img), v, 'replicate');

% Calculate the gradient magnitude and direction
grad_mag = sqrt(img_h.^2 + img_v.^2);
grad_dir = atan2d(img_v, img_h);

% Display the results
figure;
subplot(2,2,1); imshow(img); title('Original Image');
subplot(2,2,2); imshow(img_h, []); title('Gradient in X direction');
subplot(2,2,3); imshow(img_v, []); title('Gradient in Y direction');
subplot(2,2,4); imshow(grad_mag, []); title('Gradient magnitude');
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