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I would guess that these lines are just "memory garbage" since you dont load any kind of image on Mat letter. Also if im not mistaken, Point(0,0) is the upper left corner of the image (1st cell of a 2D matrix so its the upper-left-most cell) and it points to the lower left corner of your string "A" (so actually your letter "A" resides somewhere of the borders of the Mat)

Try Point (40,30) and then position it accordingly (since its more or less dead center)

I would guess that these lines are just "memory garbage" since you dont load any kind of image on Mat letter. Also if im not mistaken, Point(0,0) is the upper left corner of the image (1st cell of a 2D matrix so its the upper-left-most cell) and it points to the lower left corner of your string "A" (so actually your letter "A" resides somewhere of off the borders of the Mat)

Try Point (40,30) and then position it accordingly (since its more or less dead center)