manual pixel selection for grow cut segmentation in matlab

In order to perform grow-cut segmentation in MATLAB with manual pixel selection, we can follow these steps:

1. Load the image: Load the image onto MATLAB using the 'imread' command.

main.m
I = imread('image.jpg');
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2. Display the image: Display the image using the 'imshow' command.

main.m
imshow(I);
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3. Select seed pixels: Select the seed pixels for segmentation. This can be done using the 'impixelregion' command. This function allows the user to manually select pixel regions by clicking the mouse on the image. In this case, we will use a region of interest (ROI) tool to select several seed pixels.

main.m
h = impixelregion();
pos = getPosition(h); % get position of region
mask = createMask(h,I); % create binary mask from region
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4. Perform segmentation: Perform the segmentation using the 'imseggeodesic' command.

main.m
bw = imseggeodesic(I,find(mask),0,0.1);
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5. Display the segmented image: Display the segmented image using the 'imshow' command.

main.m
imshow(bw);
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This code will perform grow-cut segmentation in MATLAB with manual pixel selection. It first loads an image and displays it. The user can then select seed pixels by clicking on the image, and a binary mask is created from those pixels. Finally, the segmentation is performed using the 'imseggeodesic' command, and the segmented image is displayed using 'imshow'.