스마트폰 카메라와 2차원 바코드를 이용한 실내 주차장 내 측위 방법

송지현,이재성,Song, Jihyun,Lee, Jae-sung 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.1

실내 측위 분야에서는 사용할 수 없는 GPS 의 한계를 극복하기 위해 대두되고 있는 기술들은 대부분 사설 무선 통신망(Private Wireless Network)를 이용한 방법이다. 그러나 이러한 방법들은 설치 및 유지 보수비용이 많이 들고 측위 오차가 수 미터로 실내 주차장 등 정밀한 측위가 필요한 장소에서 사용하기에 부적합하다. 본 논문에서는 QR 코드 인식 기반 차량용 실내 측위 방법을 제안하였다. QR 코드 스캔을 통해 절대 좌표를 얻고 아핀 변환(affine transform)을 통한 기울기(Tilt) 및 회전(Roll) 보정과 스케일 변환 및 삼각함수를 이용한 카메라의 위치 정보(상대좌표)를 획득하여 정밀한 위치 좌표를 계산한다. 결과적으로 13.79cm 의 평균 오차를 달성해 기존 무선 네트워크 기반 기술의 오차 50cm 대비 단지 27.6% 정도 오차율에 해당함을 확인하였다. GPS is not able to be used for indoor positioning and currently most of techniques emerging to overcome the limit of GPS utilize private wireless networks. However, these methods require high costs for installation and maintenance, and they are inappropriate to be used in the place where precise positioning is needed as in indoor parking lots. This paper proposes a vehicular indoor positioning method based on QR-code recognition. The method gets an absolute coordinate through QR-code scanning, and obtain the location (an relative coordinate) of a black-box camera using the tilt and roll angle correction through affine transformation, scale transformation, and trigonometric function. Using these information of an absolute coordinate and an relative one, the precise position of a car is estimated. As a result, average error of 13.79cm is achieved and it corresponds to just 27.6% error rate in contrast to 50cm error of the recent technique based on wireless networks.

블랙박스 카메라 기반 차량 정밀 측위

송지현(Jihyun Song),이재성(Jaesung Lee) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.11

This paper proposes a indoor-positioning method for vehicles based on image processing technology. The method obtains an absolute coordinate through QR-code scanning, and an relative coordinate of a black-box camera through the tilt and roll angle correction using affine transformation, scale transformation, and trigonometric function. Using these information of an absolute coordinate and an relative one, the precise position of a car is estimated. As a result, average error of 13.79cm is achieved and it corresponds to just 27.6% of the error of 50cm in indoor-positioning techniques based on wireless networks.

상권유형별 판매분석에 따른 도넛프랜차이즈 판매공간 계획에 관한 연구

송지현(Song, Jihyun),윤갑근(Yoon, Gapguen) 한국디자인지식학회 2013 디자인지식저널 Vol.27 No.-

본 연구는 외식프랜차이즈 도넛, 커피매장에 대한 문헌조사 및 사례조사를 근거로 상권유형별 판매 조사분석, 매출별 하드웨어와의 상관관계를 표준화하여 정리하였고, 이를 바탕으로 실내 공간구성 계획시 보다 합리적이고 최적의 공간구성 연출이 될 수 있도록 그 기준을 제시하고자 하였다. 판매 기회 손실의 발생은 곧 매출의 하락으로 이어진다. 예를 들어 고객이 매장을 방문했을 경우 고객이 원하는 물건이 자주 없을 경우 고객의 재방문 빈도는 당연히 많이 줄어들 것이다. 이처럼 상업공간에서의 점포매출에 영향을 미치는 변수는 다양하지만, 그 중에서도 가장 중요한 요인이라 할 수 있는 공간구성계획의 디자인경영 마케팅 전략 접근은 매장을 방문하는 고객들의 요구와 만족도에 직접적인 영향을 주어 매출에 미치는 영향이 훨씬 크다고 볼 수 있다. 흔히들 알고 있는 일반마케팅 영역에서 이뤄지는 프로모션, 광고, 판매촉진등의 기획들이 매출에 기여하는 결과보다 디자인 및 공간구성의 측면에서 이뤄지는 기획이 매출에 더 많은 영향을 주고 있다. 본 연구에서는 그 특성을 상권유형별 분석과 매출과의 연관성이라는 특징으로 재해석해서 보다 효과적인 공간구성계획을 제시 하고자 하였고 뿐만 아니라, 이 공간구성계획은 더욱 넓은 의미에서 모든 상업공간구성에 적용 가능하며 매출을 향상 시킬 수 있는 중요한 활성화 전략이 되는 그 기초자료임을 연구해 보고자 하였다. In this study, we want to provide the most imporant standard of space composition of several visible or invisible environment factor making an donuts and coffee store, commercial rights are defferentiated between center commercial land and dwelling commercial land and we can strengthen the competitveness by bringing inspect, analysis, comparison about ptoduct make-up price each commercial land in space organixation of in-store actively in the 21 century’s new donuts and coffee competition. in the 21st century, we should recognize we are in the new period about these a aggressive goal of maximization of sales and performed space construction through plan specialization to build reasonably and effectively. composition plan for store space as composition rate of product would be basic plan. so when the opening store is decided it need to be basic composition plan space which is proper to situation of area.

탑승자 보호성능을 위한 교량용 방호울타리에 관한 실험적 연구

송지현(JiHyun Song),김규현(Gyuhyun Kim),최광호(KwangHo Choi) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Bridge rails are usually installed on the curb with a specified height and width. The variance of the height and the width of the curd could affect the safety for the passengers and the behavior of the vehicles. In this study, the impact severities of passengers and the behaviors of vehicles are investigated according to the variable location of the bridge rails on the curb with the specified height and width. The full scale crash test results show that the impact severities such as the THIV and the maximum PHD are minimized in the case of the correspondence of the face of bridge rails and the curb. Also, the results show that the behaviors of the vehicles are stable.

플랫폼 독립적인 웹서비스를 이용한 그리드 네트워크 성능 관리 시스템에 대한 연구

송지현(Jihyun Song),안성진(Seongjin Ahn),정진욱(Jinwook Chung) 한국산업응용수학회 2006 Journal of the Korean Society for Industrial and A Vol.10 No.2

슈퍼 컴퓨터의 등장으로 기존에는 풀지 못했던 과학적, 학술적인 문제들이 대부분 해결되었지만 슈퍼 컴퓨터 자체의 막대한 비용 문제는 여전히 풀지 못한 숙제로 남아 있다. 이에 일반 사용자의 컴퓨터의 유휴 자원을 통합하여 협업하는 그리드 컴퓨팅이라는 개념이 등장하였다. 한편 분산되어 있는 이기종의 시스템의 자원을 통합하여 관리하기 위해서 연결 지향적인 프로토콜들이 사용되었지만, 다른 프로토콜끼리는 호환성이 없는 등의 문제가 존재한다. 본 논문에서는 플랫폼 독립적인 XML 기반의 SOAP을 사용하는 웹 서비스를 이용하여 그리드 네트워크의 성능 정보를 관리해주는 시스템을 제안한다. The advent of supercomputers contribute greatly in overcoming scientific and academic problems that were previously difficult to solve. However, the supercomputer itself suffers from the problem of being considerable cost. In response, the concept of grid computing, to use the resources of distribute computers connected with each other, was created. This system uses connection oriented protocols to integrate and manage the resources of different types of distributed systems, yet it has the problem of compatibility between protocols of other types. In this paper, a system to manage grid network performance through XML-based SOAP web service which is platform-independent, is proposed.

‘니하오마(你好吗)?’와 context 그리고 중국어 교육 - 중국어 영상콘텐츠의 대화를 중심으로

송지현 ( Song Jihyun ) 한국중국언어학회 2019 중국언어연구 Vol.0 No.83

Visual materials like movies and dramas contain efficient language resources to study Chinese. The main reason to use the visual materials is to enhance listening comprehension and speaking skill, enlarge vocabulary, and command vivid Chinese. Language learners are able to acquaint the knowledge of cultural context through watching media contents. Most of all, it could bring more interests in learning process. You can experience and learn various tone that fits the context of “Nihaoma?” through the dialogue in movies and dramas.

공간마케팅 관점에서 본 외식공간의 디자인 사례 분석

송지현(Song, Jihyun),이재영(Lee, Jaeyoung),이현수(Lee, Hyunsoo) 한국실내디자인학회 2018 한국실내디자인학회 학술대회논문집 Vol.20 No.1

The purpose of this study is to analyze how the restaurants located in the non-commercial areas are designed and to propose the basic data for space planning. More people establish a business these days and their most preferred business is restaurant. However, the strong competition is raising the risk. So it is essential to reduce investment costs for the better risk management. In this paper, a non-commercial area is considered as an alternative location for a restaurant, and a survey is conducted to analyze the uniqueness and curiosity of the restaurants. These are worth studying as constant basic needs of human beings. The survey engaged 121 people between 20’s and 50’s who can be potential customers of the restaurants and they were asked to answer about the degree of uniqueness and curiosity, and also the spacial factors of selected examples. The results are as follows. Firstly, the case is a restaurant successfully operating in a non-commercial areas over three years, and the restaurants are specialized in focusing on the design aspect. Secondly, the respondents said positively about the degree of uniqueness and curiosity of the restaurant. Those characteristics tend to be recognized internally rather than externally. Thirdly, the exterior of the restaurant is regarded as the most factor to induce the uniqueness and curiosity of the space, and the formative elements such as interior layout, ceiling, furniture and object are selected more than color. Sign is more relevant to curiosity. Therefore, the formative elements should be actively utilized to cause the uniqueness and curiosity of the space. The study can be a useful basic resource for the spacial marketing to supplement the disadvantages of being in a non-commercial area.

내장디자인 프리미엄 이미지 구현을 위한 연구

송지현(Jihyun Song) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11

As society’s concern for trend and perceived quality grows in global automobiles market due to its direct connection to user’s emotion and satisfaction, each automobile company has been aggressively researching and developing the premium value in interior of an automobile. However, the value of interior of an automobile is relatively undervalued than exterior of an automobile due to the production cost and technologies. Now the modern premium is becoming more emphasized in recent as a main characteristic of interior design of an automobile. The concept of premium is constantly redefined in accordance with social trend. The existing premium is conveying the meaning of luxury which is high level of technologies and high class interior material. However, the interior design for automobile, especially, has been increasing in its importance in marketability along with the social trend of “premium on automobile” and appearance of Y and N generation. The study purpose is to contribute to the development of embodiment of premium design by look into characteristic of interior and propose the design direction for the emphasis on premium design of compact and mid-sized automobile.

대형승용차 충돌특성 및 변형양상에 관한 실험적 연구

송지현(Jihyun Song),홍병창(Byeongchang Hong),김규현(Gyuhyun Kim),송진화(Jinhwa Song),서상욱(Sangwook Seo) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

The purpose of this study is to conduct various crash tests of large passenger cars and measure the deformation, occupant injuries and body decelerations of vehicles. A relationship between impact speed and vehicle damage data such as deformation, body decelerations and etc are analyzed. The characteristics of domestic cars in crash tests are obtained and will be used for developing a precise accident reconstruction program by using a data which is recording at Automatic Accident Recording System(AARS). In this study, the test results of the full frontal barrier crash and side impact are reviewed and examined. The results show that the decelerations of large passenger cars are decreased on the increment of the vehicle weight. But duration of decelerations are increased on the increment of the vehicle weight.

비(非)상권 외식공간의 디자인 특성에 관한 사례 연구

송지현(Song, Jihyun),이재영(Lee, Jaeyoung),이현수(Lee, Hyunsoo) 한국실내디자인학회 2018 한국실내디자인학회논문집 Vol.27 No.4

The purpose of this study is to identify design elements for restaurant space in a non-commercial area and propose them for profit improvements of founders with small capital. As the barriers for market entry declines, new players in restaurant business has stiffen the competition and increased risk. So, it is crucial to reduce the investment costs for better risk management. In this paper, a non-commercial area is considered as an alternative location for a restaurant, and a survey is conducted to analyze the uniqueness and curiosity of the restaurants. Uniqueness and curiosity are worth studying as they are important factors of decision making. The survey was conducted on 121 individuals between 20’s and 40’s who are target customers of the restaurants. The survey measures the level of uniqueness and curiosity via images of the restaurant: how likely you will visit it, what are design elements that make it unique and curious. The results are as follows: Firstly, the respondents said positively about the degree of uniqueness and curiosity of the restaurants. The interior design elements are perceived to be more important than exterior design elements. Secondly, uniqueness and curiosity had a positive corelation with number of visits. Uniqueness in the interior space and curiosity in the exterior space have a higher influence on customers. Therefore, it is necessary to enhance effects by expressing curiosity on the exterior and uniqueness on the interior. Thirdly, the exterior shape of the restaurant is regarded as the most factor to induce the uniqueness and curiosity of the space. And the elements of spacial design related to shape such as layout, ceiling, sign are found to be more important than color. Therefore, it is necessary to actively utilize the formative factors to induce uniqueness and curiosity. The study can be a useful basic resource for the spacial marketing to supplement the disadvantages in a non-commercial area.