• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.501-503
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• 2018

본 논문은 개인에 맞는 외출 시 필요한 정보를 문에 출력하여 외출 준비를 도와주는 스마트 도어 아이디오를 제안한다. 스마트 도어를 활성화 시켜 내장된 웹 카메라로 촬영된 사진을 이용하여 얼굴인식을 수행하고 수행한 결과로 개안 아이디를 통해 데이터베이스를 조작한다. 데이터베이스에 개인 준비물 데이터는 모바일 앱에서는 도어락을 제어하는 추가적인 기능도 수행한다. 개인 중비물외에도 개인 일정, 당일 날씨 및 교통 정보를 스마트 도어 LCD에 출력과 동시에 음성으로 알려준다. 본 논문에서 제시하는 스마트 도어는 LCD에 정보 출력뿐만 아니라 half-mirror와 함께 설계되어 전신 거울 기능도 포함된다. 스마트 도어는 어디에서 사용되는 문에 유용한 기능을 추가하여 공간 활용에 용이하고 필요한 소지품을 잊지 않고 챙길 수 있다.

• The Bulletin of The Korean Astronomical Society
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• v.46 no.2
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• pp.75.2-76
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• 2021

MESSIER is a science satellite project to observe the Low Surface Brightness (LSB) sky at UV and optical wavelengths. The wide-field, optical system of MESSIER is optimized minimizing optical aberrations through the use of a Linear Astigmatism Free - Three Mirror System (LAF-TMS) combined with freeform mirrors. One of the key factors in observations of the LSB is the shape and spatial variability of the Point Spread Function (PSF) produced by scatterings and diffraction effects within the optical system and beyond (baffle). To assess the various factors affecting the PSF in this design, we use PhoSim, the Photon simulator, which is a fast photon Monte Carlo code designed to include all these effects, and also atmospheric effects (for ground-based telescopes) and phenomena occurring inside of the sensor. PhoSim provides very realistic simulations results and is suitable for simulations of very weak signals. Before the application to the MESSIER optics system, PhoSim had not been validated for confocal off-axis reflective optics (LAF-TMS). As a verification study for the LAF-TMS design, we apply Phosim sequentially. First, we use a single parabolic mirror system and compare the PSF results of the central field with the results from Zemax, CODE V, and the theoretical Airy pattern. We then test a confocal off-axis Cassegrain system and check PhoSim through cross-validation with CODE V. At the same time, we describe the shapes of the freeform mirrors with XY and Zernike polynomials. Finally, we will analyze the LAF-TMS design for the MESSIER optical system.

• Journal of the Korea Convergence Society
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• v.11 no.7
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• pp.19-24
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• 2020

WHO declared a global pandemic on March 11th for Corona 19. However, there is a situation where you have to go to building for face-to-face education or seminars for economic and social activities. The first check method of COVID-19 infection is to measure body temperature, so the primary entrance and exit is blocked for near-field body temperature measurement. However, since it is troublesome to check directly, thermal camera is installed at the entrance of the building, and body temperature is measured indirectly using the infrared camera to control access. In case of middle and high schools, universities, and lifelong education center, we need a system that is possible to interoperate with attendance checks and automatically recognizes whether to wear masks and can authenticate students. We proposed the system that is to confirm whether to wear a mask with a camera that is embedded in a smart mirror, and that authenticates the user through voice recognition of the user who wants to enter the building by using voice recognition technology and determines whether to enter them or not. The proposed system can check attendance if it is linked with near-field temperature measurement and attendance check APP of student's smart phone.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.127-130
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• 2017

The information and communication technology that is being developed recently has been greatly influencing the automobile market. In recent years, devices equipped with IT technology have been installed for the safety and convenience of the driver. It is necessary to develop a system that can link the Smartphone with the vehicle in accordance with these changes. In this paper, first of all we analyze the car connectivity services that served by the other competitors. In addition, we proposed and implemented the improved system that can support and control most of smart device application in vehicle by user's NEEDS. We also implemented the application that can restrict the applications which unsatisfied the drive regulations and designed and proposed the scenario that can apply our company's car connectivity system in future.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.43-51
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• 2016

This paper presents the concept of "interactive teleprompter", which provides the user with interaction with oneself or other users for live television broadcasts or smart mirrors. In such interactive applications, eye contacts between the user and the regenerated image or between the user and other persons are important in handling psychological processes or non-verbal communications. Unfortunately, it is not straightforward to address the eye contact issues with conventional combination of normal display and video camera. To address this problem, we propose an "interactive" teleprompter enhanced from conventional teleprompter devices. Our interactive teleprompter can recognize the user's gestures by applying infra-red (IR) depth sensor. This paper also presents test results for a beam splitter which plays a critical role for teleprompter and is designed to handle both visual light for RGB camera and IR for Depth sensor effectively.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.400-403
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• 2021

As IoT technology becomes popular, more and more data is being generated, and the diversity of data is also increasing. In particular, in smart factory or Home IoT systems, data processing is very important because various data is collected and processed in real time through sensors. In this paper, we present a method for collecting, analyzing, and monitoring various data generated by sensors in IoT environment through Raspberry Pi. We also validate its usefulness by demonstrating that the above processed data can be operated in conjunction with smart mirror and mobile application.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.708-711
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• 2017

최근 의류업계에서는 데이터마이닝을 이용하여 의상을 추천하는 시스템에 대한 연구가 활발하게 진행되고 있다. 하지만 기존 연구들은, 의상구매가 온 오프라인 모두에서 활발함에도 불구하고 온라인 쇼핑몰에서 얻을 수 있는 데이터에 국한되어 연구가 진행되고 있다. 본 논문에서는 온라인 데이터 위주의 기존 의상 추천 시스템을 스마트 홈 미러의 가상 착의시스템을 사용하여 온 오프라인 데이터를 모두 반영한 추천시스템을 구현했다. 또한 사용자에게 적합한 추천시스템을 제공하기 위해 지역별 인구분포와 사용자 기본DB를 단계별로 그룹화 했다. 정확도와 사용자 만족도를 향상 시키고자 단계별로 가중치를 부여해 협업 필터링과 날씨, 종류, 색상을 속성으로 한 내용기반 필터링을 결합하는 시스템을 제시했다.

• Journal of the Microelectronics and Packaging Society
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• v.22 no.1
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• pp.1-5
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• 2015

Recently, data throughput of smart electric devices increases dramatically. There is a great interest in a new technology which exceeds the limit of electrical transmission method. Optical PCB can supplement the weakness of electrical signal processing, the research for optical PCB is very active. In this paper, we propose the thermal imprint lithography process to fabrication optical layer of optical PCB and experiment to optimize the process conditions. We confirm process time, pressure, process temperature, demolding temperature and fabricate optical interconnection structure which has $45^{\circ}$ tilted mirror surface for confirm the interconnection efficiency.

• International journal of advanced smart convergence
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• v.9 no.1
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• pp.163-171
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• 2020

There are many differences in narrative delivery between common movies and Virtual Reality(VR) films due to their differences in the appreciation structure. In VR films, scene changes by cuts have hindered the immersion of the audience instead of promoting narrative delivery. There are a range of experiments on narratives and immersion to solve this issue in VR films. Floating Tent applies hand gestures and immersive effects found in game elements and does not disturb narrative delivery by setting proper spaces and employing a direction technique to enable the melting of narratives into the characteristics of the spaces. There are time limits to offsound and mission performance, and devices fit for apocalyptic spatial expressions are made through a program. One of measures for the increasingly growing interactive storytelling in VR films is effective immersion. In narrative delivery, it is important to consider spatial setting and immersion to enable active intervention into events for immersion rather than passive audience only supposed to watch characters' acting.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.1189-1191
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• 2017

'스마트'라는 단어가 대중화가 되면서 전자기기 뿐만 아니라 거울에도 스마트가 붙게 되었다. 하지만 스마트 거울에 다양한 기능이 추가되면서 '꾸미는 것을 돕는다'라는 거울 본연의 기능이 부가적인 요소가 되는 경우가 있거나 매장 내에 모델링이 끝난 옷을 보여주지만 집에 있는 자신의 옷을 보는 것이 부족한 경우가 많다. 본 논문에서는 OpenCV를 활용하여 옷을 여러벌 갈아입으면서 코디를 할 때 번거로움을 줄이고자 거울 앞에서 찍으면 프레임과 전경 추출 알고리즘을 사용하여 사용자의 옷을 추출하고 추출된 옷의 정확도를 위해 보정작업을 추가한다. 윤곽선의 노이즈를 줄이기 위해 Morphology 필터링을 사용하고 Clahe 히스토그램 균일화를 통해 옷의 선명도를 높혔다. 추가적으로 가상으로 띄워주는 기능과 옷을 보여줄 때 HSV 모델의 특성을 활용하여 채도나 명도의 변화의 상관없이 색을 추출하여 상의와 하의를 분리하여 상의를 내어입는 기능도 선택할 수 있게 구현 하였다.