• Journal of Korea Multimedia Society
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• v.18 no.12
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• pp.1569-1577
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• 2015

Recently, the development of IT technology, utilization of smart devices 3-5-year-old infants Upon smart device penetration rate per household increases has also sharply increased. In this paper, the educational contents for kid are considered and implemented by reflecting this trend. Content that has been produced in this paper are based on learning theory of constructivism, was to be performed naturally learn the content of the table-top display of applying the NUI technology. Also, the content creation that can help you learn infants through experiments crafted tabletop display interface content, it is believed to be the basis for the improvement of usability.

• Journal of Institute of Control, Robotics and Systems
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• v.21 no.11
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• pp.996-1002
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• 2015

In this paper, we present an effective system for the 3D scene labeling of objects from RGB-D videos. Our system uses a Markov Random Field (MRF) over a voxel representation of the 3D scene. In order to estimate the correct label of each voxel, the probabilistic graphical model integrates both scores from sliding window-based object detectors and also from object location prior maps. Both the object detectors and the location prior maps are pre-trained from manually labeled RGB-D images. Additionally, the model integrates the scores from considering the geometric constraints between adjacent voxels in the label estimation. We show excellent experimental results for the RGB-D Scenes Dataset built by the University of Washington, in which each indoor scene contains tabletop objects.

• International journal of advanced smart convergence
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• v.9 no.4
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• pp.203-208
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• 2020

In this paper, we propose the design and implementation of a desktop LED stand and smart app that automatically adjusts color temperature and illuminance for optimal brightness and eye health by improving the structural problem of the LED stand. It is a tabletop LED stand that supports optimal brightness through color temperature control and heat transfer through infrared LED to relieve eye strain through blood circulation and muscle movement. The LED stand works with the smartphone to automatically adjust the optimal brightness and color temperature for the user's environment. In addition, the brightness of the infrared LED is adjusted to a living frequency of 4Hz to relax the eye muscles and reduce eye strain. This study implemented an effective measured data-based system of previous studies through the color temperature and illumination of LED lighting, and near-infrared rays, and presented meaningful results by conducting an experiment to prove the effect through subjects.

• Journal of the Korean Society of Industry Convergence
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• v.25 no.5
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• pp.881-888
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• 2022

Servo presses are used in variety of ways in industry throughout the production and assembly lines of machine parts. The bottom of the servo press is fixed to a bed or a tabletop, and the press cylinder continuously operates under vertical upward loads. In this research, a static structural analysis was performed by simplifying 3D model of the servo press, and the maximum deformation was applied to the clamp and bolt. The maximum value of Von Mises stress was reported in this paper. The result was used to calculate the safety factor, and it was confirmed that the design was conservative.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.238-241
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• 2009

정보 과학 기술의 발전과 생활 수준의 향상이 가속화되면서 주변 환경을 구성하는 가구나 공간조차도 정보 통신과 컴퓨터 기능이 내재된 인간과 상호작용할 수 있는 개념으로 확장되고 있다. 또한 비즈니스의 규모가 방대해지면서 협업이 필요성이 증가되는 가운데 단일 사용자에게 맞춰진 표준 데스크탑을 대체할 새로운 기기와 인터페이스에 대한 요구가 증가하고 있다. 본 연구에서는 이런 패러다임에 맞춰 선호되고 있는 테이블탑 컴퓨팅을 다수의 LCD와 PC를 포함하는 분산 하드웨어 방식의 고해상도 대형 디스플레이로 구성하고, 다중 사용자의 입력을 동시적으로 처리할 수 있는 적외선 카메라를 활용한 마커 인식 기반의 탠저블 인터페이스를 개발하였다. 그리고 이 시스템에서 동작하는 고해상도 이미지 뷰어와 퍼베이스브 블록 격파 게임 응용프로그램을 구현하였다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• fall
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• pp.49-50
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• 2021

본 논문에서는 홀로그래픽 영상을 시간 다중화 방식으로 구현한 360 도 홀로그래픽 테이블탑 디스플레이에 대해서 설명한다. 공간 다중화 방식의 경우 필요한 광학 소자의 수와 정렬 난이도를 시간 다중화 방식을 이용하여 해결하고, 홀로그래픽 영상을 재생하기 위하여 푸리에 변환 광학 소자를 추가하여 부드러운 운동 시차를 갖는 형태로 구현한다. 설계된 홀로그래픽 테이블탑 디스플레이는 풀-컬러 영상을 재생하기 위해서 총 3 개의 고속 구동이 가능한 DMD(Digital micromirror device)를 정렬하는 라이트 엔진 구조를 갖고 있다.

• Journal of the Korea Computer Graphics Society
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• v.13 no.4
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• pp.13-19
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• 2007

Computer games for elderly people can be utilized as a tool not only for enjoying themselves but also for improving their health and quality of lives. It is reported that such games could be played in order to stimulate and enhance mental and physical capabilities of elderly people. It is also reported that traditional folk games are preferred to be played by elderly people rather than modern computer games. In this paper, we propose to use a tabletop interface, u-Table, and its corresponding natural gestures as a user interface for playing traditional folk games by elderly people. Since a table is a good place for people to get together, talk to each other and share their experiences, a tabletop interface can be used for playing games of cooperation, conversation and sharing. A set of traditional folk games were digitalized using u-Table. It was demonstrated that its users had better experiences of playing games with u-Table comparing to playing games using a mouse of a conventional computer.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06a
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• pp.112-116
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• 2010

본 논문에서는 테이블탑 디스플레이을 기반으로한 RealBook에 대하여 제안한다. 전자책은 일반 종이책이 아닌 컴퓨터를 이용한 가상의 책으로써 사용자가 독서를 하는 도중 동영상 자료를 보거나 배경음악을 들을 수 있게 해주는 멀티미디어 콘텐츠이다. 또한, 테이블탑 디스플레이 플랫폼에서 사용하므로 손의 직접적인 터치를 이용하여 전자책과 사용자 간의 좀 더 다양한 상호작용이 가능하도록 한다. 테이블탑 디스플레이에서는 손가락의 터치 점을 이용하여 다양한 제스처를 정의할 수 있어서, 사용자가 기존 입력 장치에 비해 보다 효과적으로 전자책을 체험하는 것을 돕는다. 본 논문에서는 제안하는 방법은 기존 전자책과 차별화된 상호작용 디지털와 아날로그를 결함한 책(Real book)으로써 전자책에 대한 새로운 방향을 제시할 수 있고, 미디어 아트와 스토리텔링 기법을 접목시켜 사용자에게 정보 전달뿐만 아니라 예술과 오락 등을 제공할 수 있다. 앞으로 컴퓨터와 사용자간의 상호작용을 원활하게 할 수 있어 다양한 어플리케이션 개발에 활용될 수 있고 향후 미래 지향적 시스템이 될 것이다.

• Journal of the Korean Solar Energy Society
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• v.24 no.2
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• pp.51-62
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• 2004

Architects may evaluate building models to see how a building will shadow itself and its neighbors at various times. A heliodon, a tilt-table which is a machine that imitates the rotation and orbit of the Earth, helps architects wanting to analyze patterns of shadow patch, passive solar heating options, site solar panels, or control solar heat gain. The heliodon swivels in three directions for setting latitude, season, and time of day. Using the device, an architect first clamps a model to the tabletop, then turns the table to the coordinates of interest. Usually, the winter and summer solstices receive strong attention, for they represent extreme cases, A more recent installation at a university adds to its heliodon a set of lamps to recreate the illumination level and more accurate patterns of shadow patch. The table holds the building model at various angles to a spotlight, which mounts in the pole. The set of scale model measurement describes the validity of various electric lamps as an artificial sun to approximate the sun's parallel rays, helping designers to distinguish between illuminated areas in and around a building and those regions falling in the shadows.

• Korean Journal of Materials Research
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• v.17 no.6
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• pp.308-312
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• 2007

Chromium oxide thin films have been deposited on silicon substrates using a tabletop 9kJ mathertyped plasma focus (PF) device. Before deposition, pinch behavior with gas pressure was observed. Strength of pinches was increased with increasing working pressure. Deposition was performed at room temperature as a function of working pressure between 50 and 1000 mTorr. Composition and surface morphology of the films were analyzed by Auger Electron Spectroscopy and Scanning Electron Microscope, respectively. Growth rates of the films were decreased with pressure. The oxide films were polycrystalline containing some impurities, Cu, Fe, C and revealed finer grain structure at lower pressure.