Abstract
Integral imaging systems are imaging devices that provide 3D images of 3D objects. When integral imaging systems work in their standard configuration the provided reconstructed images are pseudoscopic; that is, are reversed in depth. In this paper we present, for the first time we believe, a technique for formation of real, undistorted, orthoscopic integral images by direct pickup. The technique is based on a smart mapping of pixels of an elemental-images set. Simulated imaging experiments are presented to support our proposal.
Highlights
Integral imaging (InI) is a three-dimensional (3D) imaging technique that works with incoherent light and provides with auto-stereoscopic images without the help of special glasses
InI is based on integral photography (IP) which was proposed by Lipmann in 1908 [1]
In the reconstruction stage the set of elemental images are displayed in front of another microlens array, providing the observer with a reconstructed 3D image that is seen with horizontal and vertical parallax
Summary
Integral imaging (InI) is a three-dimensional (3D) imaging technique that works with incoherent light and provides with auto-stereoscopic images without the help of special glasses. One of the main problems in InI is the overlapping between adjacent elemental images in the pickup stage To overcome this drawback the use of gradient-index microlenses [14], or the use of a barrier array [15] were proposed. InI systems have shown to be useful for pure 3D imaging applications and for other applications like object recognition [16,17], the acquisition of 3D mapping of polarization distributions [18], or to provide the input signal for electro-floating display systems [19] As it is known, in their standard configuration InI systems provide the observer with real, pseudoscopic images, that is, with a 3D reconstruction that is reversed in depth. We show that after a single-step pickup process and a smart pixel mapping in the display stage, undistorted real, orthoscopic integral images can be obtained, avoiding the deterioration in resolution inherent to a two-step recording processes
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