4D multi-frame spectrum three-dimensional imaging method based on aperture coding and digital image correlation

The invention discloses a 4D multi-frame spectrum three-dimensional imaging method based on aperture coding and digital image correlation, which adopts a 4D imaging system to tightly couple and cooperatively image two different mechanisms of spectrum imaging and three-dimensional imaging, and removes a mask in an aperture coding spectrum imaging module in the system. The aperture coding pattern is used for actively illuminating a target object, so that an image after space light intensity modulation is obtained, and the effect similar to that of a mask is achieved. Active coding aperture snapshot spectral imaging and digital image correlation DIC are combined, digital speckle images used by 3D imaging and random codes needed by spectral imaging are originally combined, spectral reconstruction and three-dimensional reconstruction can be synchronously carried out, the system speed is greatly improved, and due to the fact that spectral imaging is achieved through an active CASSI scheme, the spectral imaging effi