Would you please provide some code as to how you are displaying, resizing, and exporting the data from MATLAB so that we can better understand what you are trying to do?
One thing I would try is that I suspect you are using image/imagesc instead of imshow to display that data. If you aren't careful with the data aspect ratio in your axes, this will distort the text in display. If you cannot use imshow (IPT dependency), try this:
A = imread('http://www.antigrain.com/research/font_rasterization/msword_text_rendering.png');
image(A)
truesize
This will display your data at the original aspect ratio, which is definitely something you need when working with text.
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