A Light Field High Definition Imaging Method Based on Light Field Measurement

Abstract

The invention discloses a light field high-definition imaging method based on light field measurement. First, the displacement of the sub-aperture image of the light field camera is calculated, and then the sub-aperture image is translated to compensate for the displacement, and the symmetry of the sub-aperture image is restored. Aberrations such as atmospheric turbulence are corrected, and finally the symmetrical sub-aperture image is digitally refocused to achieve high-definition imaging, thereby improving the imaging resolution of the light field camera when it is affected by aberrations such as atmospheric turbulence. The present invention processes the light information recorded by the light field camera itself to finally achieve the purpose of high-definition imaging without adding other hardware devices, and can theoretically overcome the influence of all aberrations that destroy the symmetry of sub-aperture images. The invention is simple, easy to implement, low in cost and has a wide range of application.

Description

technical field [0001] The present invention relates to the field of light field imaging, in particular to a light field high-definition imaging method based on light field measurement, which is based on processing the original light field information recorded by a light field camera, by restoring the symmetry of the sub-aperture image, and To improve the imaging resolution of the light field camera when it is affected by aberrations such as atmospheric turbulence. Background technique [0002] With the explosive development of CPUs, the development prospect of light field imaging technology based on computational imaging is very optimistic. While imaging, it expands the reshaping of imaging, and can add human understanding of images, making the final image information Be more flexible. With the development of optoelectronic technology and devices and the further improvement of light field theory, light field imaging is gradually penetrating into various fields such as aeri...

AI Technical Summary

Problems solved by technology

Compensation or correction of imaging quality by adaptive optics technology is only partial and insufficient

In addition, the wavefront measurement of the adaptive optics system consumes a lot of light energy, and the light energy utilization rate of the system is not high; the strong turbulence environment will cause the light intensity to flicker, resulting in the failure of the Hartmann wavefront measurement; the cost is expensive for some miniaturized equipment , it is difficult to apply on a large scale; guide stars are required, and the structure is complex, especially for clear imaging of extended targets

Image post-processing is an image post-processing technology. It has special requirements for image shooting conditions, the number of samples, and prior information of images. Moreover, the amount of data calculation is large, and it is difficult to achieve real-time or quasi-real-time. It is not applicable to Clear imaging of high-speed moving targets

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