Brazilian Forensic Letter Dataset

The BFL database composed of 315 writers, three samples per writer, summing up 945 images. The motivation for using such database is the growing interest of the Brazilian forensic experts as well as the Brazilian Federal Police in writer verification/identification . The samples were provided by undergraduate students inthree different sessions during one month. The texts werecollected on an A4 white sheet of paper with no pen-drawbaseline and then scanned in gray level with 300 dpi (3760 X 2448). Each writer was allowed to use his/her own pen, which means that several different pens were used. The text is concise (131 words) and complete in the sense that it contains all characters (letters and numerals) and certain character combinations of interest. This makes it suitable for text-dependent writer identification as well. The image below shows the letter contents and a sample of the database.