Multi-spectral optical field imaging system and multi-spectral optical field imaging method based on color difference expansion principle

Abstract

The invention provides a multi-spectral optical field imaging system and a multi-spectral optical field imaging method based on color difference expansion principle. The multi-spectral optical field imaging system comprises a prepositive filter array, an imaging main lens group, an optical path expansion unit, a multi-spectral imaging unit, and an image calculation processing unit. The prepositive filter array is used to introduce information of various spectral range of a scene, The imaging main lens group comprises a plurality of lens units, and is used to correct the aberration of the imaging system. The optical path expansion unit is formed by regular high refractive index glass crystals, and is used to expand the color difference of the imaging system. The multi-spectral imaging unit is used to shoot spectral images passing through the lens group. The image calculation processing unit is used to calculate spectral image data, and is used to realize acquisition of multi-spectral optical field information by a local linear mapping algorithm. The multi-spectral optical field information of the scene can be acquired at the same time, and the system has advantages of simple structure and high-efficiency calculation.

Description

technical field [0001] The invention relates to the technical field of multispectral light field imaging, in particular to a multispectral light field imaging system and method based on the principle of chromatic aberration expansion. Background technique [0002] In order to perceive and understand complex scenes, researchers try to obtain more information of the scene, such as multispectral and light fields. Traditional cameras take pictures using planar sensors based on Bayer filter arrays. The captured three-primary-color image is a planar projection of a three-dimensional scene represented by three color channels, ie, red, green, and blue. Along with the development of optics and computational photography, multispectral and light field information acquisition has been extensively explored to capture more spectral channels and light field information in a scene. [0003] In the past few decades, several different spectral imaging methods have been proposed to capture m...

AI Technical Summary

Problems solved by technology

However, simultaneous acquisition of multispectral and light field information is difficult because these methods require measuring too much anisotropic data

Images