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A hyperspectral projector for simultaneous 3D spatial and hyperspectral imaging via structured illumination.
Optics Express
|October 29, 2020
Summary
We developed a low-cost hyperspectral stripe projector (HSP) using a digital micro-mirror device. This system simplifies hyperspectral 3D imaging, reducing costs and acquisition times for better scene understanding.
Area of Science:
- Optics and Photonics
- Computer Vision
- Spectroscopy
Background:
- Combining 3D and hyperspectral imaging enhances scene perception.
- Existing hyperspectral 3D systems are complex, costly, and time-consuming.
Purpose of the Study:
- To introduce a low-cost, high-frame rate hyperspectral stripe projector (HSP).
- To demonstrate a simplified approach for hyperspectral 3D imaging.
Main Methods:
- Developed an HSP system using a single digital micro-mirror device.
- Utilized hyperspectral structured illumination for 3D surface imaging.
- Applied spectrum-dependent compressive imaging for volume density analysis.
Main Results:
- The HSP system produces hyperspectral patterns with independently programmable spectra per row.
- Enabled simultaneous encoding of 3D spatial and spectral information using a grayscale sensor.
- Demonstrated efficient and low-cost hyperspectral 3D imaging.
Conclusions:
- The HSP offers a simple, efficient, and cost-effective solution for integrating structured illumination with hyperspectral imaging.
- This novel technique inspires future advancements in hardware and software for hyperspectral imaging systems.
