How can my outputs be assigned to each image that is being processed

I am processing around 168 images to get their perimeters, convex hulls, and get a ratio between those two. Here is my code:

for k = 27 : 194
	jpgFileName = strcat('Slice_v2_', num2str(k), '.png');
	if isfile(jpgFileName)
		[X, cmap] = imread(jpgFileName);
	else
		fprintf('File %s does not exist.\n', jpgFileName);
    end
    RGB = ind2rgb(X,cmap);
  
    gray_image = rgb2gray(RGB); 
    
    BW = imbinarize(gray_image); 
    
    comp = imcomplement(BW); 
   
    imshowpair(gray_image, comp, 'montage');
    
    %figure(1) %used tat index i so old figures are not overwritten by new figures
    %imshow(our_images)
       
    stats = regionprops (comp,'Perimeter'); %this can change
    allPerimeters = [stats.Perimeter];

    convhulls = bwconvhull(comp);    
    imshowpair(convhulls, comp, 'montage');
    
    stats1 = regionprops (convhulls,'Perimeter'); 
    allPerimeters2 = [stats1.Perimeter];
    
    sum1 = sum(allPerimeters); 
    sum2 = sum(allPerimeters2);

    giratio = sum1/sum2;
    end

I get "gi =" for each but they are not individually saved into the workspace, I see why that happens. Only the last slice is kept in the workspace. I want to be able to have all of the perimeters (I have a sum since I get a struct array of values becasue the image has multiple bodies, so I want to add them up) and thus distinguished as separate outputs in order to graph it. Each perimeter, convex hull and gi calculation assigned to each slice instead of just a raw calculation. like a gi1-gi168.

Answer 1

[Johannes Hougaard]

I would assign the outputs either to a multidimensional struct:

output = repmat(struct("RGB",[],...
    "grayimage",[],...
    "BW",[],...
    "comp",[],...
    "stats",[], ...
    "giratio",[]),168,1);
for k = ...
        output(k).RGB = ind2rgb(X,cmap);
    ...
end

or in a struct per variable with a field for each image

for k = ...
    RGB.(strtok(jpgFileName,'.')) = ind2rgb(X,cmap);
    ...
end

Depending on whether you like your outputs organized mainly per image or per variable

Answer 2

[Image Analyst]

I'd put them into rows of a table.