3 3D Holoscopic Content Generation
The 3D holoscopic imaging technique creates and represents a true volume spatial optical model of the object scene in the form of a planar intensity distribution using unique optical components. A 3D holoscopic image is recorded using a regularly spaced array of lens-lets closely packed together with a recording device (see Figure 1a).4 Each lenslet views the scene at a slightly different angle than its neighbor, so a scene is captured from many viewpoints and parallax information is recorded. We then replay the 3D holoscopic images by placing a microlens array on top of the recoded planar intensity distributions that is illuminated by white light diffused from the rear. Figure 1b shows that the object is then constructed in space by the intersection of ray bundles emanating from each of the lenslets. In replay, the reconstructed image is pseudoscopic (inverted in depth). In the last two deca-des, researchers have proposed various optical and digital techniques to convert the pseudoscopic image to an orthoscopic image.[5]–9