Optical field imaging device and method

Abstract

A high-resolution light field imaging device and method, wherein the device corresponding to the light field imaging method makes the image plane of the main lens coincide with the position of the variable focus microlens array by shifting the position of the main lens. The focal length of the lens array is the initial focal length, the distance between the sensor and the variable-focus microlens array is equal to the initial focal length, the sensor obtains the first image, and the main lens is translated so that the image plane deviates from the position of the variable-focus microlens array, and the variable-focus microlens array is adjusted accordingly From the focal length to the second focal length, the image plane of the main lens is conjugated on the sensor through the variable-focus microlens array to obtain the second image. During this process, the translation position of the main lens and the focal length of the variable-focus microlens array follow Gaussian optics law; the extraction part extracts the high directional resolution information of the first image and the high spatial resolution information of the second image; the image processing part weights and regroups the extracted information and reconstructs the images 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 high spatial resolution and high directional resolution. Background technique [0002] The imaging process of a traditional camera adopts a two-dimensional projection method for a three-dimensional space scene. It only accumulates the intensity of light on the detector pixels, which means that only the spatial distribution of the object on the image plane is considered. The information about the direction of light propagation 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 images can calculate the two-dimensional images focused at different depths to realize the function of "photograph first and then ...

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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