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Smartphone Cameras Go Hyperspectral
['Charles Q. Choi']
IEEE Spectrum
In contrast, off-the-shelf smartphone camera sensors are potentially hyperspectral in nature, meaning that each pixel is sensitive to far more spectral bands.
Now scientists have found a simple way for any conventional smartphone camera to serve as a hyperspectral sensor—by placing a card with a chart on it within its view.
By extracting it, we can turn everyday photography into science.”Using a smartphone camera and a spectral color chart, researchers can image the transmission spectrum of high-end whiskey, thus determining its authenticity.
Previous research has pursued a number of different ways to recover spectral details from conventional smartphone RGB camera data.
This strategy can extract hyperspectral data from raw images with a sensitivity of 1.6 nanometers of difference in wavelength of visible light, comparable to scientific-grade spectrometers.
['image'
'scientists'
'camera'
'quality'
'data'
'technique'
'spectral'
'cameras'
'applications'
'hyperspectral'
'smartphone']