Marble Slurry Powder are Using Visualization on Latent Fingerprints on Different Surfaces

Development of latent fingerprints on greasy surfaces.

Effect of Substrate Surface Topography on Forensic Development of Latent Fingerprints with Iron Oxide Powder Suspension

Latent fingerprint deposition and effectiveness of detection are strongly affected by the surface on which prints are deposited. Material properties, surface roughness, morphology, chemistry and hydrophobicity can affect the usefulness or efficacy of forensic print development techniques. Established protocols outline appropriate techniques and sequences of processes for broad categories of ope...

Development of latent fingerprints on non-porous surfaces recovered from fresh and sea water

BACKGROUND Criminal offenders have a fundamental goal not to leave any traces at the crime scene. Some may suppose that items recovered underwater will have no forensic value, therefore, they try to destroy the traces by throwing items in water. These traces are subjected to the destructive environmental effects. This can represent a challenge for forensic experts investigating fingerprints. ...

Range sensors on marble surfaces: quantitative evaluation of artifacts

While 3D imaging systems are widely available and used, clear statements about the possible influence of material properties over the acquired geometrical data are still rather few. In particular a material very often used in Cultural Heritage is marble, known to give geometrical errors with range sensor technologies and whose entity reported in the literature seems to vary considerably in the ...

An assessment of laser range measurement on marble surfaces

An important application of laser range sensing is found in the 3D scanning and modelling of heritage collections, and of sculptures in particular. Since a significant proportion of the statues in the world’s museums is composed of marble, the optical properties of this material under laser range sensing need to be understood. Marble’s translucency and heterogeneous structure produce significan...