Speaker
Ms
Thong-on Thanyarat
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
Description
In this research, a technique of digital holography has been applied to investigation of latent fingerprints on a surface of clear transparent glass plate. In this technique, a CCD camera is put at the image plane instead of photographic film in typical holography. In our technique, a Michelson interferometer has been setup for splitting a laser beam from a semiconductor laser to an image bearing beam and a reference beam for recording a hologram. By using a numerical technique for reconstructing record images from the CCD camera, a sharp result images and their details have been shown. The benefit of this technique may be improved for investigating a fingerprint on the surfaces of different kinds of construction materials such as woods, ceramics, or metals in the future.
Authors
Mr
Thanakarn Tasingkum
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
Mr
Thanva Tubthong
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
Ms
Thong-on Thanyarat
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
Co-authors
Ms
Chantira Boonsri
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
Prathan Buranasiri
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
Suwan Plaipichit
(Department of Applied Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
