Detecting invisible details and separating mixed evidence is critical for forensic inspection. If this can be done reliably
and fast at the crime scene, irrelevant objects do not require further examination at the laboratory. This will speed up the
inspection process and release resources for other critical tasks. This article reports on tests which have been carried out
at the University of Jyväskylä in Finland together with the Central Finland Police Department and the National Bureau of
Investigation for detecting and separating forensic details with hyperspectral technology. In the tests evidence was sought
after at an assumed violent burglary scene with the use of VTT's 500-900 nm wavelength VNIR camera, Specim's 400-
1000 nm VNIR camera, and Specim's 1000-2500 nm SWIR camera. The tested details were dried blood on a ceramic
plate, a stain of four types of mixed and absorbed blood, and blood which had been washed off a table. Other examined
details included untreated latent fingerprints, gunshot residue, primer residue, and layered paint on small pieces of wood.
All cameras could detect visible details and separate mixed paint. The SWIR camera could also separate four types of
human and animal blood which were mixed in the same stain and absorbed into a fabric. None of the cameras could
however detect primer residue, untreated latent fingerprints, or blood that had been washed off. The results are
encouraging and indicate the need for further studies. The results also emphasize the importance of creating optimal
imaging conditions into the crime scene for each kind of subjects and backgrounds.