ISSN: 2573-1734
Authors: Shai Kendler and Barak Fishbain*
Hyperspectral imaging enables the mapping of a crime scene in both spatial and spectral domains. In many cases, the materials have a unique reflectance spectrum that enables their identification. HSI is often referred to as "chemical mapping" which is very appealing for forensic science. The main impediment in the application of this technique is spectral mixing between the target and benign material reflectance spectra. Different mixing mechanisms are discussed in relation to crime scene investigation. It seems that the primary gap today is nonlinear spectral mixing. Resolving this gap and providing a real-time data analysis algorithm will contribute to the accurate chemical mapping of crime scenes. Recent advances in nonlinear mixing lay the path towards this goal.
Keywords: Spectral Mixing; Nonlinear Mixing; Linear Mixing
