Our device functions where clinicians' eyes can’t
The Technology
Human eyes operate within a narrow region of the electromagnetic spectrum known as the visible light spectrum. The visible light spectrum encompasses light with wavelengths of only 380–750 nanometers; however, light with wavelengths beyond 750 nanometers still communicates valuable information.
GatorVision images beyond the visible light spectrum and into a region of light known as short-wave infrared. This extends our imaging capabilities to electromagnetic radiation with wavelengths of 1700 nanometers, far beyond what can be seen by the naked eye. Light in the near-infrared region can penetrate beyond visual obstructions. GatorVision leverages this to allow for imaging that goes beyond the surface layer of skin to uncover previously hidden biological processes.
Hyperspectral imaging allows for dense sampling across these spectral bands. By combining this spectral information with spatial information, an informational data cube is created for each pixel. This enables better identification of the substance that is being imaged.
Image sourced from https://pmc.ncbi.nlm.nih.gov/articles/PMC7549435/.
Compressive sampling techniques allow for sampling during image acquisition to be completed at a sub-Nyquist rate. Thus the image can be constructed from less information than traditional digital data acquisition. This further frees up computational capacity for image reconstruction from samples, leading to better results regardless of potential data loss.
By combining this imaging technology with a novel optical design and compressive sampling techniques, GatorVision offers a safe, low-cost, portable, fast, and non-invasive means for skin imaging.
Our Device
Unlike traditional methods, our system doesn’t require direct skin interaction or blood samples and isn’t affected by differences in skin color. The device operates through a combination of optical components—including a photodiode, lenses, a digital micromirror device (DMD), and a camera—that work together to capture and analyze light intensity from tissue.
The process involves projecting binary light patterns, capturing reflected light, and reconstructing images with Hadamard transform algorithms. Using LabVIEW, we collected and displayed real-time signals from the photodiode, and then analyzed the data in MATLAB to verify the accuracy of light intensity measurements.
GatorVision is designed to be affordable for smaller clinics and lower-income providers. Its compact, lightweight design—under 2.5 pounds and 64 cubic inches—makes it easy to transport and use in diverse settings. Ultimately, GatorVision offers a practical, scalable solution to improve access to allergy diagnostics where it's needed most.
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