• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.11
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• pp.2799-2804
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• 2014

In this paper, we suggest three-dimensional information extraction map system using integral imaging technique. Integral imaging can record multiple elemental images with different perspectives using a 2D image acquisition device with lenslet array. Using these images, integral imaging can obtain 3D information and display 3D image. In this paper, the position difference between elemental images can be obtained using summation of absolute difference (SAD), and then 3D information can be extracted. Therefore, this technique can find the height information of 3D objects.

• Korean Journal of Optics and Photonics
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• v.23 no.1
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• pp.32-35
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• 2012

In this paper, an analysis of the optimized 3D depth of integral imaging is proposed. We achieve this by calculating the amount of image distortion and considering the threshold of recognition in the human visual system. Experimental results are also provided to test the theory.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2017.06a
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• pp.76-77
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• 2017

본 논문에서는 집적 영상에서 렌즈 배열의 격자를 정확하게 검출하기 위한 캘리브레이션 패턴 영상을 제안한다. 렌즈 배열의 격자를 검출하기 위해서 수직, 수평 방향의 에지 영상이 필요하다. 입력 영상의 에지를 잘 검출하지 못하면, 렌즈 배열의 요소 영상 크기를 결정할 때 오류가 발생할 수 있다. 이를 위해, 본 논문에서는 에지를 잘 검출할 수 있는 캘리브레이션 패턴 영상을 제안하여 정확도를 향상 시킨다. 본 논문에서는 실험을 통하여 제안하는 방법이 기존의 방법보다 집적 영상에서 렌즈 배열의 격자를 검출할 때 우수하게 적용될 수 있음을 보여주었다.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.2
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• pp.411-418
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• 2018

This paper presents a novel three-dimensional (3D) object encryption scheme by combining the use of the virtual optics and the chaotic sequence. A virtual 3D object is digitally produced using a two-dimensional (2D) elemental image array (EIA) created with a virtual pinhole array. Then, through a logistic mapping of chaotic sequence, a final encrypted video can be produced. Such method converts the value of a pixel which is the basic information of an image. Therefore, it gives an improved encryption result compared to other existing methods. Through computational experiments, we were able to verify our method's feasibility and effectiveness.

• Proceedings of the Optical Society of Korea Conference
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• 2006.02a
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• pp.287-288
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• 2006

• Proceedings of the Optical Society of Korea Conference
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• 2008.07a
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• pp.221-222
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• 2008

• Information Display
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• v.5 no.2
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• pp.27-32
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• 2004

• Information Display
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• v.6 no.6
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• pp.21-29
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• 2005

• Proceedings of the Optical Society of Korea Conference
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• 2008.02a
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• pp.187-188
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• 2008

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.2
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• pp.337-343
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• 2007

Since three-dimensional (3D) images reconstructed in interval imaging technique are related to the resolution of elemental images, there has been a problem that ray information of elemental images increases largely in order to obtain high-resolution 3D images. In this paper, to overcome this problem, a new unidirectional integral imaging based on pinhole model is proposed. Proposed method provides a new type of unidirectional elemental images, which are simply obtained by magnifying single horizontal pixel line of each elemental image to the vertical size of lenslet using ray analysis based on pinhole model and used to display 3D images. In proposed method, reduction effect of the ray information of elemental images can be obtained by scarifying vortical parallax. Feasibility of the proposed scheme is experimentally demonstrated and its results are presented.