Accurate lattice extraction in integral images

Sgouros, N.; Athineos, Spyros S.; Sangriotis, M.S.; Papageorgas, Panagiotis; Theofanous, N.

doi:10.1364/oe.14.010403

Cited by 13 publications

(8 citation statements)

References 10 publications

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“…The two main research topics have been to overcome the physical limitations and to search for new applications of integral imaging systems. For solving the physical limitations, several researchers have proposed solutions to the pseudoscopic problem [63][64][65][66], to the uncertainty in the position and angle of the microlenses and the elemental images with respect to the sensor [67][68][69][70], and to the limitation of the viewing angle [71][72][73][74]. Solutions to the limited depth of field [75][76][77] or to the detrimental effect of the facet braiding have also been proposed [78,79].…”

Section: The Viewer Sees Point S Closer To Him Than the Other Pointmentioning

confidence: 99%

Three-Dimensional Imaging and Display through Integral Photography

Navarro

Dorado²,

Saavedra³

et al. 2014

Journal of information and communication convergence engineerin

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Here, we present a review of the proposals and advances in the field of three-dimensional (3D) imaging acquisition and display made in the last century. The most popular techniques are based on the concept of stereoscopy. However, stereoscopy does not provide real 3D experience, and produces discomfort due to the conflict between convergence and accommodation. For this reason, we focus this paper on integral imaging, which is a technique that permits the codification of 3D information in an array of 2D images obtained from different perspectives. When this array of elemental images is placed in front of an array of microlenses, the perspectives are integrated producing 3D images with full parallax and free of the convergenceaccommodation conflict. In the paper we describe the principles of this technique, together with some new applications of integral imaging.

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Section: The Viewer Sees Point S Closer To Him Than the Other Pointmentioning

confidence: 99%

Three-Dimensional Imaging and Display through Integral Photography

Navarro

Dorado²,

Saavedra³

et al. 2014

Journal of information and communication convergence engineerin

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“…Among the possible applications are analyzing regions, image cells, and image mixing; designing autostereoscopic displays (full-parallax and HPO displays with rectangular, hexagonal, and slanted image cells); measurement, analysis, simulation, and control of the geometric characteristics of 3D displays [35,56]; and analyzing the depth and resolution [26]. There can be many other applications (e.g.…”

Section: Discussionmentioning

confidence: 99%

Analytical model of multiview autostereoscopic 3D display with a barrier or a lenticular plate

Saveljev

Palchikova

2018

Journal of Information Display

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A geometric model of an autostereoscopic 3D display is described herein. This model is based on the geometry of typical display devices and on the projective transformations that provide periodicity in the projective space. The formulas for the transformations between regions and spaces are provided. The model can be applied to the study of an operation of the multiview, integral, plenoptic, and lightfield displays. A practical application considered in this paper is the multiview wavelet transform. ARTICLE HISTORY

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“…All these methods detect and register grid lines and using this metric information transformation matrices are formed that are subsequently applied in the correction procedure. In [7] a method based on the Hough transform was shown that estimated rotation, position and size information for EIs using square lenses. A perspective rectification method also utilizing the Hough transform was shown in [8].…”

Section: Introductionmentioning

confidence: 99%

Grid reconstruction and skew angle estimation in Integral Images produced using circular microlenses

Koufogiannis

Sgouros

Ntasi

et al. 2013

2013 18th International Conference on Digital Signal Processing (DSP)

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Nowadays a number of different three-dimensional (3D) systems compete in the field of capturing and delivering autostereoscopic (ASt) 3D content. Integral Imaging (InI) is a promising ASt technique that provides both horizontal and vertical parallax as well as high quality realistic 3D content. In this work we propose an InI preprocessing method for identification and accurate segmentation of the grid structure in Integral Images (InIms) generated using lens arrays (LAs) containing circular lenses. In the proposed method we utilize the gradient augmented circular hough transform to accurately detect circular regions in the acquired integral image (InIm). Subsequently by using a triangulation scheme followed by a statistical approach we accurately estimate the grid line structure of the utilized LA. This results in the accurate segmentation of the circular shaped elemental images (EIs) contained in the InIm, a process vital for the effectiveness of the InI methodology. We provide experimental results over artificial as well as optically acquired InIms to evaluate the accuracy of the method using objective metrics.

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Accurate lattice extraction in integral images

Cited by 13 publications

References 10 publications

Three-Dimensional Imaging and Display through Integral Photography

Three-Dimensional Imaging and Display through Integral Photography

Analytical model of multiview autostereoscopic 3D display with a barrier or a lenticular plate

Grid reconstruction and skew angle estimation in Integral Images produced using circular microlenses

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