36th Article "Obliterated-writing decipherment using an infrared hypespectral imaging system"

Ayu Rini Tri Utari
16611046
Review of the 36th article


"Obliterated-writing decipherment using an infrared hypespectral imaging system"

   Some specific obliteration writing can not be detected by conventional methods, so new detectors must be developed. They investigated the use of mid-infrared hyperspectral imaging with a range between 4000 and 700 cm-1 (wavelengths between 2.5 and 14 μm) this is a promising method because it is one of the most effective ways to differentiate organic substances used as colorants. Characters are written on boxes using four different writing inks, selected based on the spectra measurement results. Inks are then stamped on the boxes using an information security stamp, obliterating this writing. Middle-infrared hyperspectral imaging is then performed using an infrared hyperspectralq imaging system. The spectra are analyzed using the “view peak ratio” function of Spectrum Spotlight. The experimental results demonstrate that certain obliterated writing, which cannot be detected by the conventional method, but can be detected by middle-infrared hyperspectral imaging.