Axial distributed three-dimensional imaging method based on double wedged prisms

Abstract

The invention relates to an axial distributed three-dimensional imaging method based on double wedged prisms. The method includes two processes of acquisition of multi-visual-angle element images andreconstruction of a three-dimensional image. The acquisition process of the multi-visual-angle element images includes steps: maintaining a camera and a first prism still by employing the refraction effect of a light beam by the double wedged prisms, and intermittently acquiring the multi-visual-angle element images, regarded as 3D scenes, of a traverse perspective and a vertical perspective of atarget object through one-dimensional movement of a second prism along an optical axis. The reconstruction process of the three-dimensional image includes steps: performing back projection of the recorded element images to a virtual space scene through a virtual pinhole according to a back projection algorithm, superposing the amplified and shifted element images on the same reconstruction plane,and selecting a pixel average value of a new overlapping region to form a constructed image of the three-dimensional image. Compared with the prior art, according to the method, an approach for real-time dynamic display of space scene integrated imaging is provided, and the application of the integrated imaging technology enriched.

Description

technical field [0001] The invention relates to integrated imaging technology, in particular to an axially distributed three-dimensional imaging method based on double wedge prisms. Background technique [0002] Integrated imaging technology is a 3D image technology that uses a microlens array to record and reproduce a space scene. It includes two processes of recording and reproduction: the recording process uses a recording microlens array to obtain the three-dimensional information of the object space scene; The reproduction process uses the reversible principle of the reproduction microlens array to reconstruct the three-dimensional scene in the viewing space. [0003] In order to obtain high-resolution recorded images, a synthetic aperture was proposed in the prior art (Jang J S, Javidi B.Three-dimensional synthetic aperture integral imaging[J].Optics Letters,2002,27(13):1144-6.) Type-integrated imaging (SAII) technology, through the movement of the sub-integrated imag...

AI Technical Summary

Problems solved by technology

[0004] Both of these technologies use the movement of the camera to record the image, but the image recording area of ​​these methods is limited, and the recorded image only contains horizontal (or vertical) perspective information, plus the spatial position of the camera and the direction of the optical axis are moving. It is difficult to accurately control the process, and the number of cameras used in the camera array is too large, so it cannot meet the requirements of real-time dynamic display of integrated imaging of space scenes, which greatly limits the application of integrated imaging technology

Images