This image correspond to a specimen deformed in the vertical direction. Would you have any suggestion to lift deformed pixels and make a "perfecly horizontal block"
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![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/159126/image.jpeg)
NOTE: A mask can be easily created. Thank you.
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Image Analyst
il 20 Dic 2016
Just go along your mask finding the top line, then use circshift or imtranslate or simple indexing to lift the line.
[rows, columns] = size(mask);
for col = 1 : columns
thisColumn = grayImage(:, col);
topLine = find(mask(:, col), 1, 'first');
thisColumn = [thisColumn(topLine:end), zeros(topLine-1, 1)];
grayImage(:, col) = thisColumn;
end
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