Ask user for another image or abort

% What I would like the program to do is, to ask the user if they want to select another image to process. How do I do that?


clear all

[file,path] = uigetfile('*.jpg')

rgbImage = imread (strcat(path, file));

[rows, columns, numberOfColorChannels] = size(rgbImage); % Get the dimensions of the image.

subplot(2, 2, 1);% Display the original color image on the first box
imshow(rgbImage);

% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1); % arrayName(rowIndex, columnIndex, colorChannelIndex). Colon : means "all".
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);

% Find white, where each color channel is more than , say, 200
thresholdValue = 200;
binaryImage = redChannel > thresholdValue & greenChannel > thresholdValue & blueChannel > thresholdValue;
% Display the binary image.
subplot(2, 2, 2); % display the binary image on the 2nd plot
imshow(binaryImage);

% Determine the areas on this first pass.
numRegions = 0;
[labeledImage, numRegions] = bwlabel(binaryImage); % returns the number of distinct regions that make up the shape
props = regionprops(labeledImage, 'Area'); % returns measurements for the set of properties specified by 'Area'
allAreas = sort([props.Area]); % returns a collection of index vectors

% Get rid of small blobs - blobs smaller than 500 pixels to see the tumor
% more clearly
binaryImage = bwareaopen(binaryImage, 500);
% Display the binary image.
subplot(2, 2, 3); % plots the image with lesser blobs on 3rd plot
imshow(binaryImage);


% Now crop out the blob - the one in the lower left.
[labeledImage, numRegions] = bwlabel(binaryImage);
% Extract blob 
binaryImage = ismember(labeledImage, 1);
[labeledImage, numRegions] = bwlabel(binaryImage);
props = regionprops(labeledImage, 'BoundingBox');
subImage = imcrop(rgbImage, props.BoundingBox);
% Display the cropped image.
subplot(2, 2, 4); % plot the final cropped image in the original way showing the tumor
imshow(subImage);

Answer 1

[Walter Roberson]

Delete the "clear all" -- you should never include "clear all" as part of a program that does computation. (But you could have a script that is intended to just reset your MATLAB session that it would be valid to have "clear all" as part of.)

After that, put

while true

at the top. Then at the bottom add

    user_choice = menu('Do you want to process another image?', 'Yes', 'No');
    if user_choice ~= 1; break; end
    
end
    

[Ally Kassam]

Thank you so much!!