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...

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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 optic...

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