| The hyperspectral industry application, hyperspectral imaging technology and its development are introduced. Hyperspectral imaging data has been used in product sorting, precision agriculture, environmental monitoring, cultural relics preservation, criminal investigation, camouflage identification and other industries. However, the traditional spectroscopic imaging methods, such as prism grating dispersion, continuous tunable filter and Fourier transform interferometry, are still mainly used as scientific research equipment because of their high cost, large volume and slow speed. To promote massive industrial application, spectral imaging technology with compact size, low cost and fast speed is needed. Computational tomography, compressive coding and CQDs (colloidal quantum dots) spectral imaging still need theoretical breakthroughs and are difficult to be applied in a short time. The integral field unit and the discrete sampling spectral imaging technology are simple in principle and mature in technology, which can be used in the occasion of low spatial resolution requirements. The compound-eye filter and the pixel filter spectral imaging technology can achieve real-time performance on the basis of balancing spectral resolution and spatial resolution through a single integrated pixel filter, and can greatly reduce volume and cost. |
