Technical note: A novel 3D scan-based optical method for analyzing lines drawn at different pen pressure
2022
Aşıcıoğlu, Faruk | Yilmaz, Aysegul Sen | Kinder, Jan de | Pekacar, Ilgim | Gelir, Ali
Pen pressure is one of the important elements of handwriting and questioned document analysis which is also crucial to recognize forgery. In this paper, we present a new, non-contact, non-destructive, and relatively inexpensive technique to measure the width of the grooves made by the writing. Results demonstrate a clear difference in measured groove widths for varying pen pressure. The effect of passing a written or signed paper in different types of printers has also been studied. A clear decrease of the groove depth was noted when passing the document through a laser printer. An ink jet printer only resulted in a small decrease of the groove depth, while no effect could be detected from a dot matrix printer.
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