• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.01a
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• pp.583-587
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• 2009

In this paper we propose a new method of Depth-Image-Based Rendering (DIBR) for Free-viewpoint TV (FTV). In the proposed method, virtual viewpoint images are rendered with 3D warping instead of estimating the view-dependent depth since depth estimation is usually costly and it is desirable to eliminate it from the rendering process. However, 3D warping causes some problems that do not occur in the method with view-dependent depth estimation; for example, the appearance of holes on the rendered image, and the occurrence of depth discontinuity on the surface of the object at virtual image plane. Depth discontinuity causes artifacts on the rendered image. In this paper, these problems are solved by reconstructing disparity information at virtual camera position from neighboring two real cameras. In the experiments, high quality arbitrary viewpoint images were obtained.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.363-366
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• 2011

3D 디스플레이 시장이 커지면서 TFT-LCD TV 자동화 라인 생산 공정을 3D LCD TV 생산 공정으로 변환하여 대량 생산할 경우, 기 설치된 자동화 생산라인의 H/W 부분에는 특별한 투자가 이루어질 거라 판단되지 않고 있다. 하지만 3D LCD Module 검사 등의 S/W 적인 부분은 현재의 기 설치된 TFT-LCD Module 검사장비로는 검사가 불가능하여, 추가적인 투자가 이루어질 것이라 판단되고 있다. 이와 관련하여 본 연구에서는 TFT-LCD 제조공정의 효율적인 기술을 제안하고자 한다. 첫째는 TFT-LCD를 Cell상태에서 직접 구동하는 구동회로 기술과 사용 장소가 Clean Room이므로 개별적 구동 Pallet에 비접촉식으로 전원을 공급할 수 있는 비접촉식 급전장치에 대한 기술이다.

• Proceedings of the IEEK Conference
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• 2000.11d
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• pp.33-36
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• 2000

To create a more realistic soccer game derived from TV images, we are developing an image synthesis system that generates 3D image sequence from TV images. We propose the method for the team and the pose recognition of players in TV images. The representation includes camera calibration method, team recognition method and pose recognition method. To find the location of a player on the field, a field model is constructed and a player's field position is transformed by 4-feature points. To recognize the team information of players, we compute RGB mean values and standard deviations of a player in TV images. Finally, to recognize pose of a player, this system computes the velocity and the ratio of player(height/width). Experimental results are included to evaluate the performance of the team and the pose recognition.

• Journal of Broadcast Engineering
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• v.10 no.3
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• pp.286-296
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• 2005

This paper presents a stereo-based image compression and transmission system for 3D realistic television. In the proposed system, a disparity map is extracted from an input stereo image pair and the extracted disparity map and one of two input images are transmitted or stored at a local or remote site. However, correspondences can not be determined in occlusion areas. Thus, it is not easy to recover 3D information in such regions. In this paper, a reconstruction image compensation algorithm based on error block concealment and in-loop filtering is proposed to minimize the reconstruction error in generating stereo image pair. The effectiveness of the proposed algorithm is shown in term of objective accuracy of reconstruction image with several real stereo image pairs.

• Electronics and Telecommunications Trends
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• v.29 no.3
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• pp.17-26
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• 2014

방송의 디지털 전환 완료 후, 세계 각국은 3DTV 및 UHDTV(Ultra High Definition Television)로 대표되는 실감방송서비스 및 기술개발에 박차를 가하고 있다. 특히 3DTV의 경우, 현재 시판되고 있는 평면TV의 필수기능으로 포함되어 있으며, 우리나라를 비롯한 선진 각국에서는 상용 3DTV 방송서비스가 제공되고 있다. 또한, UHDTV의 등장으로 무안경 다시점 3DTV의 걸림돌이던 해상도 저하문제가 해결되면서 시점당 해상도가 향상된 다시점 3D 디스플레이 상용품 및 시제품들이 속속 발표되고 있다. 이에 따라, 무안경 다시점 3DTV 방송 서비스도 가시화 될 것으로 보며, 이를 위해서는 다시점 디스플레이뿐만 아니라 다시점 비디오 부호화 등의 표준기술이 필요하다. 본고에서는 무안경 다시점 3DTV 기술의 핵심이 되는 디스플레이 기술과 다시점 3D 비디오 부복호화 기술을 중심으로 알아본다.

• Journal of the Ergonomics Society of Korea
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• v.9 no.2
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• pp.29-35
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• 1990

To investigate and analyze of the human brain-wave changes during 3-dimenslonal image load were expected to take not only an important basic information of 3-dimensional TV usage but also 3-dimensional image design. In this experiment, to analyze the difference of visual analyze handing system for which we present the 2- dimensional image having no parallex and 3-dimensional image by visual evoked potentials(VEP). 2-dimensional image and 3-dimensional image displayed on the screen through video. In the test, the time interval was one sec for presentation of stimulus considering united time of visual information of right eye and left eye during watching the 3-dimensional image also display time interval was 200 mesc for each stimulus image. Results are as follow, (1) N190 appears faster 16msec-20msec in the point of Fz, Cz, Pz, Oz when loaded 3D4 angle than 2D3 angle. (2) About of the P300, 3D4 angle(Otherwise, Oz point was reverse) and in the case of no equipment of liquid crystal shutter, there appeared PEAK near the P250. (3) There were 5% significant difference when the liquid crystal shutter was equiped and didn't, Therefore, this phenomenon show the possibility that Liquid crystal shutter influences on Visual Evoked Potentials.

• Journal of the Optical Society of Korea
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• v.13 no.4
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• pp.406-415
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• 2009

Optical scanning holography (OSH) is a distinct digital holographic technique in that real-time holographic recording a three-dimensional (3-D) object can be acquired by using two-dimensional active optical heterodyne scanning. Applications of the technique so far have included optical scanning cryptography, optical scanning microscopy, 3-D pattern recognition, 3-D holographic TV, and 3-D optical remote sensing. This paper reviews some of the recent progress in OSH. Some possible further works are also discussed.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.23 no.7
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• pp.761-767
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• 2012

In this paper, a novel ultra-wideband planar monopole antenna for the UHF communications and Digital-TV reception is proposed. The proposed antenna fed by a coplanar waveguide(CPW) is based on a triangular patch that has a broadband characteristic. To further increase the bandwidth of the triangular patch antenna, the top side of the regular triangular patch is loaded with a notch cut and each oblique side with a step. In addition, a slope is given to the ground plane of the CPW structure. Experimental results show that the -10 dB return loss bandwidth of the proposed antenna is 2,320 MHz from 480~2,800 MHz(5.83:1 bandwidth), which covers all the frequency bands of the various wireless communication systems and Digital TV broadcasting in the UHF band. Within the entire operating frequency range, the measured antenna gain in y-z plane(E-plane) varies from 3.01 to 4.71 dBi.

• International journal of advanced smart convergence
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• v.4 no.2
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• pp.131-137
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• 2015

Home Entertainment system is recently being offered by Home Theater & Smart TV with contents service. Also, console game is being played in the media like in TV. The usage of 4D as the main technology in entertainment industry has mostly been limited in Theme Park, Amuse Park, Theater, and contents for Movie and Animation. Some simulation systems for game has been developed but they were made mostly by using electric or hydraulic motion system which cause high power consumption and have a restriction of place for install. The paper is attempted to build Home Entertainment system which makes users feel realistic contents by developing 4D systems for Home Entertainment rather than before. 4D control S/W in which user can insert and edit 4D effects on contents of all areas such as game, movie, and broadcasting is developed. Also, built-in pneumatic cylinder in 4D system which can be easily controlled and managed in home is developed.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.11a
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• pp.73-76
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• 2009

실감콘텐츠는 3DTV, 다시점 TV 등의 필수적인 콘텐츠로, 향후 다양한 유형의 콘텐츠 제작이 필요하다. 본 논문에서는 3D 환경의 방송용 콘텐츠로 살아있는 콘텐츠의 제작기법을 제안한다. 살아있는 콘텐츠는 등장하는 캐릭터가 이동하고, 애기를 하도록 제작되어, 기존의 단순한 2D영상의 시청에서 살아있는 캐릭터를 시청할 수 있다. 제안 시스템은 TVML (TV program Making Language)을 기반으로 제작되며, 한 장의 영상이 주어지면, 3D Studio MAX 등과 같은 3D 콘텐츠 제작 툴을 이용하여 캐릭터 및 배경, 물체에 대한 객체 화일을 생성한다. 이렇게 제작된 객체 화일들을 TVML 스크립트에서 불러오고, 이들의 동작을 지시함으로써 살아있는 3D 영상 콘텐츠를 제작한다. 실험 콘텐츠로 신윤복의 단오풍정 그림을 적용하여, 배경에 깊이를 주고 또한 캐릭터들이 움직이고 말하게 된다. 사용자가 다양한 이벤트를 제작하면 보다 실감 있고 관람객의 몰입도를 높일 수 있다. 개인이 제작하기 힘든 방송용 실험 콘텐츠를 손쉽게 제작함으로써 Web 2.0 환경에서의 사용자 참여 중심의 콘텐츠 제작의 용이성을 제공한다.