Mobile snapshot hyperspectral imaging device for skin evaluation using diffractive optical elements
| Autor: | Frank Fischer, Christian Kern, Uwe Speck, Carina Reble, Marco De Gregorio, Rainer Riesenberg, Michael Zieger, Georg Khazaka, Martin Kaatz |
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| Rok vydání: | 2021 |
| Předmět: |
Diagnostic Imaging
skin medicine.medical_specialty Spectral power distribution Computer science Skin Pigmentation mobile device spectral imaging Field of view Dermatology 01 natural sciences 010309 optics 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Optics 0103 physical sciences medicine Humans Lighting handheld device CMOS sensor business.industry Hyperspectral imaging Hyperspectral Imaging Original Articles Chip Spectral imaging Wavelength Snapshot (computer storage) Original Article business |
| Zdroj: | Skin Research and Technology |
| ISSN: | 1600-0846 0909-752X |
| DOI: | 10.1111/srt.12991 |
| Popis: | Objective A mobile handheld snapshot hyperspectral imaging device was developed and tested for in vivo skin evaluation using a new spectral imaging technology. Methods The device is equipped with four different LED light sources (VIS, 810 nm, 850 nm, and 940 nm) for illumination. Based on a diffractive optical element (DOE) combined with a CMOS sensor chip, a snapshot hyperspectral imager is achieved for the application on human skin. The diffractive optical element (DOE) consists of a two‐dimensional array of identically repeated diffractive microstructures. One hyperspectral image for all wavelength regions is taken within a few seconds. Complex recalculation of the VIS spectral distribution and image information from the received DOE image requires several minutes, depending on computing performance. A risk assessment on the irradiation sources shows no risk of harm due to the LED radiation. Results Skin tone color patches experiments reproducibly deliver images and spectra of different skin tones. First in vivo use of the device identified pigmentation changes within the field of view. Conclusion We present a working mobile snapshot hyperspectral imaging tool based on diffractive optical elements. This device or future developments thereof can be used for broad skin evaluation in vivo. |
| Databáze: | OpenAIRE |
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