Video: Hyperspectral Imaging using the VSC6000/HS

TECHNOLOGY FOR QUESTIONED DOCUMENT EXAMINATION

 

Hyperspectral Imaging

 

Hyperspectral imaging is a non-invasive, non-destructive method of optimising the spectral differences of inks, toners and pigments. It can be used for the detection of forgery, alterations and page substitution of questioned documents as well as for the analysis of paintings and artwork.

By examining a document under a bandpass filtered light source at progressively longer wavelengths it is possible to capture a sequence of images of the document to create a hyperspectral datacube - a dataset that includes all of the spacial and spectral information for each captured image across a predetermined waveband.

By manually scrolling through the images in a datacube it is possible to determine at which wavelength, if any, a difference in intensity or contrast can be seen between different samples.

Additional applications for hyperspectral imaging within forensic science include fiber comparison, fingerprint enhancement and the visualisation of bloodstains, accelerants and gunshot residue.

Application Examples

 


 

Hyperspectral Imaging for the discrimination of gel ink pens using the VSC6000/HS

 

EXAMINE DOCUMENTS WITH HYPERSPECTRAL IMAGING USING THE FOLLOWING PRODUCTS

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