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An ARL scientist has developed a method for the detection of oxygen deficiency in the tissue of a human body as an indicator of illegal drug use without the need for touch or bodily contact. The method relies on generating hyperspectral images and comparing them to a reference image. The comparison indicates whether the subject’s blood is oxygenated or deoxygenated.
The system uses acousto-optic tunable filters in the acquisition of an image. Among the attractive features of AOTFs are their small size, light-weight, computer-controlled operation, large wavelength tuning range, and reasonably high spectral resolution. Additionally, their operation can be made ultra-sensitive by using advanced signal-processing algorithm.
- Stand-off detection
- Businesses can commercialize the technology by licensing U.S. Patent 8,218,143 from the Army
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