Optical field imaging device and method

Abstract

The invention provides an optical field imaging device and method. A device corresponding to the optical filed imaging method enables an image plane of a main lens to be overlapped with the a variable-zoom micro lens array through horizontally moving the main lens; the focal length of the variable-zoom micro lens array is an initial focal length, and the distance between a sensor and the variable-zoom micro lens array is equal to the initial focal length; a first image is obtained by the sensor and the main lens is horizontally moved to enable the image plane to be deviated from the position of the variable-zoom micro lens array; the focal length of the variable-zoom micro lens array is correspondingly adjusted to a second focal length so that the image plane of the main lens is conjugated and imaged on the sensor through the variable-zoom micro lens array to obtain a second image; in the process, the change of the horizontal movement position of the main lens and the focal length of the variable-zoom micro lens array abides by a Gaussian optical law; high-direction resolution rate information of the first image and high-direction resolution rate information of the second image are extracted through an extracting part; and an image processing part is used for carrying out weighting recombination on the extracted information and carrying out registration and reconfiguration on the image to obtain the best imaging effect.

Description

technical field [0001] A light field imaging device and method with high resolution, in particular to a light field imaging device and method with both high spatial resolution and high direction resolution. Background technique [0002] The imaging process of traditional cameras adopts a two-dimensional projection method for three-dimensional space scenes, and only accumulates the intensity of light on the detector pixels, that is to say, only the spatial distribution of objects on the image plane is considered, and the The propagation direction information of the light is discarded, and the reshaping of the image is limited. Light field imaging retains the possibility of image reshaping, can obtain more flexible and diversified image information, and has a very broad application prospect. For example, the digital refocusing technology of light field pictures can be used to calculate the two-dimensional images focused at different depths, so as to realize the function of "t...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the bottleneck problem that the current light field imaging technology cannot obtain high spatial resolution and high directional resolution at the same time, the present invention proposes a light field imaging device and method with both high spatial resolution and high directional resolution

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