核心概念
Dispersed Structured Light (DSL) enables accurate hyperspectral 3D imaging with low cost and high quality.
要約
The article introduces Dispersed Structured Light (DSL) as a method for accurate hyperspectral 3D imaging. It modifies a traditional projector-camera system by adding a diffraction grating film, enabling the dispersion of structured light patterns based on wavelength. The DSL method allows for compact, low-cost, and high-quality hyperspectral 3D imaging. The content is structured into sections covering Introduction, Related Work, Dispersive Projection Image Formation, Hyperspectral 3D Reconstruction, Calibration, Assessment, Conclusion, References.
Introduction
Hyperspectral 3D imaging aims to capture depth and spectrum per pixel.
Existing methods are often impractical due to high costs and low accuracy.
DSL introduces dispersed structured light for accurate hyperspectral 3D imaging.
Related Work
Previous work combines hyperspectral imaging with depth imaging.
Various methods have been explored for hyperspectral 3D imaging with different setups.
Dispersive Projection Image Formation
DSL modifies the projector-camera system using a diffraction grating film.
Image formation involves zero-order and first-order diffractions.
Correspondence mapping is crucial for first-order diffractions.
Hyperspectral 3D Reconstruction
Depth estimation is done using binary-code structured light patterns.
Hyperspectral reconstruction is achieved through scanline structured light patterns.
Optimization is used for accurate hyperspectral image reconstruction.
Calibration
Calibration involves diffraction efficiency, spectral response functions, emission functions, and correspondence models.
Assessment
DSL achieves accurate hyperspectral 3D imaging with spectral FWHM of 18.8 nm and depth error of 1 mm.
Results show successful reconstruction of spectral curves and color differences in samples.
Conclusion
DSL offers a step towards practical hyperspectral 3D imaging with its accuracy and affordability.
Future work includes improving capture speed for dynamic scenes and increasing working depth range.
統計
DSL achieves spectral accuracy of 18.8 nm FWHM and depth error of 1 mm.
引用
"The proposed DSL enables accurate hyperspectral 3D imaging with an average depth error of 1 mm."
"DSL promises accurate and practical hyperspectral 3D imaging for diverse application domains."