High-resolution multispectral collection system based on mask and double-Amici prism

Abstract

The invention provides a multispectral collection system, which comprises an imaging objective lens device, a sampling mask device, a prismatic decomposition device, a photographing device and a spectrum collection calibration device, wherein the imaging objective lens device is used for converging and transmitting scene light rays once to generate transmission light rays and comprises a first lens and a second lens; the sampling mask device is positioned at an imaging plane between the first lens and the second lens and is used for performing space sampling on a scene; the prismatic decomposition device is positioned at the rear end of the imaging objective lens device and is used for performing chromatic dispersion on the transmission light rays which pass through the imaging objective lens device to form spectra on a plurality of wavelengths; the photographing device is positioned at the rear end of the prismatic decomposition device and is used for imaging the spectra on a plurality of wavelengths to generate an image to be calibrated; and the spectrum collection calibration device is positioned at the rear end of the photographing device and is used for calibrating and correcting sampling points of the image to be calibrated to acquire spectrum information of the sampling points of the scene. The invention also provides a multispectral collection method. By the multispectral collection system, high-resolution multispectral data acquisition with large range of depth of field and luminous flux can be realized.

Description

technical field [0001] The invention relates to the field of computational photography, in particular to a multispectral acquisition system and method. Background technique [0002] In recent years, computational photography has become an international frontier research hotspot in the fields of cross-vision, graphics, photography, and signal processing. How to computationally collect and reconstruct high-dimensional information of real scenes has attracted widespread attention. Carrying out related research work on scene multispectral information is of great significance for remote sensing monitoring, security investigation, digital entertainment and other fields. [0003] Traditional digital photography is to sample the two-dimensional projection subspace of the high-dimensional scene signal (commonly represented by the seven-dimensional plenoptic function), and project the high-dimensional scene information onto the two-dimensional sampling subspace of the camera for colle...

AI Technical Summary

Problems solved by technology

These works all illustrate the importance of multispectral acquisition, but although multispectral acquisition has become a hot spot in computational photography recently, how to obtain scene information with high temporal resolution, high spatial resolution, and high spectral resolution is still a difficult problem , the above-mentioned work also has defects such as narrow depth of field and low luminous flux.

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