Wie extrahiere ich jedes Zeichen aus einem Bild? Mit diesem Code

Ich muss jedes Zeichen aus einem Bild hier extrahieren. Ich lade den Code hoch, der die horizontalen Linien segmentiert, aber nicht in der Lage ist, die einzelnen Zeichen zusammen mit der horizontalen Liniensegmentierungsschleife zu segmentieren. Einige1 Bitte helfen Sie, den Code zu korrigieren. Dies ist der vorherige Code:

%%horizontal histogram
H = sum(rotatedImage, 2);
darkPixels = H < 100; % Threshold
% label
[labeledRegions, numberOfRegions] = bwlabel(darkPixels);
fprintf('Number of regions = %d\n', numberOfRegions);
% Find centroids
measurements = regionprops(labeledRegions, 'Centroid');
% Get them into an array
allCentroids = [measurements.Centroid];
xCentroids = int32(allCentroids(1:2:end));
yCentroids = int32(allCentroids(2:2:end));
% Now you can just crop out some line of text you're interested in, into a separate image:
hold off;
plotLocation = 8;
for band = 1 : numberOfRegions-1 
    row1 = yCentroids(band);        
    row2 = yCentroids(band+1);        
    thisLine = rotatedImage(row1 : row2, :);
    subplot(7, 2, plotLocation)
    imshow(thisLine, [])
    %% Let's compute and display the histogram.
    verticalProjection = sum(thisLine, 2);
    set(gcf, 'NumberTitle', 'Off') 
    t = verticalProjection;
    t(t==0) = inf;
    mayukh=min(t);
    % 0 where there is background, 1 where there are letters
    letterLocations = verticalProjection > mayukh; 
    % Find Rising and falling edges
    d = diff(letterLocations);
    startingRows = find(d>0);
    endingRows = find(d<0);
    % Extract each region
    y=1;
    for k = 1 : length(startingRows)
        % Get sub image of just one character...
        subImage = thisLine(:, startingRows(k):endingRows(k)); 
        [L,num] = bwlabel(subImage);
        for z= 1 : num
            bw= ismember( L, z);
            % Construct filename for this particular image.
            baseFileName = sprintf('templates %d.png', y);
            y=y+1;
            % Prepend the folder to make the full file name.
            fullFileName = fullfile('C:\Users\Omm\Downloads\', baseFileName);
            % Do the write to disk.
            imwrite(bw, fullFileName);
            pause(2);
            imshow(bw);
            pause(5)
        end;
        y=y+2;
    end;
    plotLocation = plotLocation + 2;
end

aber nicht die ganzen Linien segmentieren