다수의 Kinect 카메라를 이용한 3차원 객체 복원 구현

신동원,호요성,Shin, Dong Won,Ho, Yo Sung 한국스마트미디어학회 2014 스마트미디어저널 Vol.3 No.4

3차원 복원은 실세계에 존재하는 물체를 가상의 공간에 재건하고 자유로운 시점을 선택하여 물체를 관찰할 수 있게 한다. 이러한 3차원 복원 기술은 교육, 문화, 예술 등 분야를 막론하고 다양한 곳에서 사용되고 있다. 3차원 복원 시스템을 구현하기 위해 본 논문에서는 Microsoft사에서 출시된 Kinect를 이용하여 다시점 시스템을 구성해서 고품질의 3차원 객체를 복원하는 방법을 제안한다. 먼저 3대의 Kinect를 객체의 전면에 수렴형으로 설치하여 색상 영상과 깊이 영상을 획득한다. 그런데 원본의 깊이 영상은 깊이 값을 가지지 않는 부분이 존재한다. 따라서 본 논문에서는 이 부분을 적절한 깊이 값으로 채워 넣기 위해서 깊이 가중치를 추가한 결합형 양방향 필터를 적용한다. 또한 다시점 시스템에서 얻은 원본의 색상 영상은 서로 색상이 일치하지 않는 문제가 존재하는데 이를 그대로 이용하여 3차원 모델 정합을 하면 색상이 부자연스럽게 연결된 3차원 모델을 얻게 된다. 따라서 이러한 색상 불일치의 문제를 해결하기 위해서 본 논문에서는 다시점 시스템에서의 3차원 기하학적 정보를 이용한 색상 보정 방법을 사용한다. 실험을 통해 제안한 방법을 이용하여 획득한 3차원 모델이 원본 3차원 모델보다 색상과 형태 관점에서 자연스럽게 표현된 것을 확인할 수 있었다. Three-dimensional image reconstruction allows us to represent real objects in the virtual space and observe the objects at arbitrary view points. This technique can be used in various application areas such as education, culture, and art. In this paper, we propose an implementation method of the high-quality three-dimensional object using multiple Kinect cameras released from Microsoft. First, We acquire color and depth images from triple Kinect cameras; Kinect cameras are placed in front of the object as a convergence form. Because original depth image includes some areas where have no depth values, we employ joint bilateral filter to refine these areas. In addition to the depth image problem, there is an color mismatch problem in color images of multiview system. In order to solve it, we exploit an color correction method using three-dimensional geometry. Through the experimental results, we found that three-dimensional object which is used the proposed method is more naturally represented than the original three-dimensional object in terms of the color and shape.

고함수율의 셀룰로오스 표면층을 갖는 실리콘 하이드로젤 콘택트렌즈의 제조 및 물성

신동원(Dong-Won Shin),김미란(Miran Kim),강민진(Minjin Kang),김영진(Young-Jin Kim),이현미(Hyun Mee Lee),김기홍(Ki Hong Kim),한윤수(Yoon Soo Han) 한국고분자학회 2023 폴리머 Vol.47 No.5

조선시대 지방의료의 성장 : 관 주도에서 사족 주도로, 사족 주도에서 시장 주도로

신동원(Shin Dong-Won) 한국사연구회 2006 한국사연구 Vol.135 No.-

The present paper elucidates the three phases in the local medical system of the Joseon Dynasty by examining the process through whicha medical mutual assistance association in Gangneung (1603~1642) emerged, saw changes in its management methods, and disappeared. In 1603, twenty-five aristocrats in Gangneung created an informal mutual assistance association, thus establishing an unprecedented and stable local medical supply system. Although it did receive support from the magistracy of Gangneung, this medical mutual assistance association was privately organized and led by the aristocrats. The system was organized so that the aristocrats lent rice at interest, which in turn was used to procure medicine and to hire physicians. Up to the 17th century, Joseon society provided medicine to the provinces through a gift economy where a system based on three central medical organs(which also included the Palace Medical Office and the Office for Relief Works), at the top of which was the Palace Pharmacy in Seoul, and pharmacies attached to regional magistracies, which catered to those of high ranks and social class. Based on personal connections, it was a makeshift and unstable system. With the rise of medical mutual assistance associations, however, this medical structure came to be replaced by a medical system centered on aristocrats. From 1603 and onwards, the aristocrats in Gangneung took care of their health by organizing a medical mutual assistance association, which indeed was the sole medical system in the region. Although it required a considerable amount of operating funds, this new system secured and provided medication in a stable manner. The aristocrats in Gangneung organized this medical mutual assistance association in an effort to practice the Confucian values of “filial piety” and “benevolent art”, and the organization also contributed to these aristocrats’ rule over local society because it was the only medical organ throughout Gangneung. This aristocrat-centered medical system was in complete disuse by the early 19th century, however, a phenomenon that actually began to occur much earlier. What destroyed the Gangneung aristocrats’ medical mutual assistance association was the emergence of pharmacies pursuing profit. With the rise of numerous pharmacies, the Gangneung aristocrats’ medical mutual assistance association lost its monopoly. This signifies the transition of the “qualification” for the use of the medical system from ideology and social class to economic purchasing power. In fact, such commercial medical mutual assistance associations were predominant in both Seoul and the provinces and eventually came to take root even in the relatively isolated Gangneung area. Implemented since the early 17th century, the Uniform Land Tax Law generated a large amount of surplus medical supplies besides those presented to the king as tribute, which in turn seem to have affected the commercialization of medicine considerably. In sum, the local medical system in Gangneung during the Joseon Dynasty changed from a makeshift gift economy based on official rank and social class in the early 17th century to a medical mutual assistance association managed by aristocrats, then to a commercial medical system around the early 19th century. Such changes were caused by the emergence of social organizations called mutual assistance associations following the mid-Joseon Dynasty, Confucian values of “filial piety” and “benevolent art”, and the growth of commerce during the late Joseon Dynasty. Indeed, the case of the medical mutual assistance association was not limited solely to Gangneung but a phenomenon observable in the entire Joseon society including both the capital and the provinces. key

Design of Cubic Spline Interpolator using a PVAJT Motion Planner

신동원(Dong-Won Shin) 한국기계가공학회 2011 한국기계가공학회지 Vol.10 No.3

A cubic spline trajectory planner with arc-length parameter is formulated with estimation by summing up to the 3rd order in Taylor’s expansion. The PVAJT motion planning is presented to reduce trajectory calculation time at every cycle time of servo control loop so that it is able to generate cubic spline trajectory in real time. This method can be used to more complex spline trajectory. Several case studies are executed with different values of cycle time and sampling time, and showed the advantages of the PVAJT motion planner. A DSP-based motion controller is designed to implement the PVAJT motion planning.

논문 : 조선후기 의원의 존재 양태

신동원 ( Dong Won Shin ) 한국과학사학회 2004 한국과학사학회지 Vol.26 No.2

특집논문 : 생명윤리와 종교 ; 한국 전통의학의 의학윤리와 생명윤리: 조선시대의 의서를 중심으로

신동원 ( Dong Won Shin ) 한국종교문화연구소 2004 종교문화비평 Vol.5 No.-

머신비전을 이용한 FPC 의 자동정렬 및 장착

신동원(Dong-Won Shin) 한국기계가공학회 2007 한국기계가공학회지 Vol.6 No.3

The FPCs(Flexible Printed Circuit) are currently used ill several electronic products like digital cameras, cellular phones because of flexible material characteristics. Because the FPC is usually small size and flexible, only one FPC should not enter chip mounting process, instead, several FPCs are placed on the large rigid pallette and enter into the chip mounting process. Currently the job of mounting FPC on the pallette is carried by totally manual way. Thus, the goals of the research is develop the automatic machine of FPC mounting on pallette using vision alignment. Instead of using two cameras or using moving one camera, the proposed vision system with only one fixed camera is adopted. Moreover, the two picker heads which can handle two FPCs simultaneously are used to make process time shortened. The procedure of operation is firstly to measure alignment error of FPC, correct alignment errors, and finally mount well-aligned FPC on the pallette. The vision technology is used to measure alignment error accurately, and precision motion control is used in correcting errors and mounting FPC.

배경 영역의 시간적 일관성이 향상된 고해상도 깊이 동영상 생성 방법

신동원(Dong-Won Shin),호요성(Yo-Sung Ho) 한국방송·미디어공학회 2015 방송공학회논문지 Vol.20 No.3

2차 생성 미세먼지 저감을 위한 암모니아 관리정책 마련 기초연구

신동원 ( Dong Won Shin ),주현수 ( Hyun-soo Joo ),서은주 ( Eunju Seo ),김채윤 ( Chae Yoon Kim ) 한국환경정책평가연구원 2017 한국환경정책평가연구원 기초연구보고서 Vol.2017 No.-

미세먼지의 국내 배출량은 지속적인 감소 추세에도 불구하고 PM2.5의 연평균 농도를 획기적으로 개선하기가 어렵고, 고농도 사례 일수가 증가함에 따라 2차 생성 미세먼지 관리가 중요시되고 있다. 이미 직접 배출되는 미세먼지와 상대적으로 배출원이 잘 파악된 황산화물, 질소산화물을 관리하기 위한 노력에도 불구하고 2차적으로 생성되는 PM2.5의 개선은 여전히 힘든 상황이다. 그러므로 2차 생성의 중요한 역할을 하는 전구물질 암모니아의 관리가 중요하나 대기오염관리 차원에서는 아직 활발한 연구가 진행되지 못한 실정이다. 본 연구는 2차 생성의 전구물질인 암모니아의 배출정보를 확인하고, 해외 사례를 살펴보며 암모니아 관리방안의 방향과 앞으로 수행되어야 할 연구 방향을 마련하는 데 중점을 두고 수행하였다. 암모니아 배출 특성 및 배출 현황, 국내외 인벤토리와 배출량 산정방법, 해외 암모니아 관리방안 조사와 비교를 통해 앞으로 2차 생성 미세먼지를 관리하기 위한 암모니아 관리 정책 시사점을 고찰하고, 후속 연구들을 제안하였다. 우선적으로 2차 생성 미세먼지와 암모니아와의 생성기구 규명 및 정확한 암모니아 농도측정을 통해 미세먼지 관리를 위한 암모니아 감축 목표를 설정하고 관리해야 할 것이다. 암모니아 배출의 지속적인 감시와 관리를 위해 국가 배출량 정보의 체계적인 생산과 관리가 필수적이므로 암모니아 배출량 조사 체계를 보완하기 위한 누락 배출원 발굴과 추정방법 개선, 국내 실정에 맞는 지역별 배출계수 개발을 확대하여야 할 것으로 전망한다. 국내 농·축산업 부문에서는 앞서 언급한 자료 확보와 산정방법 개선 외에도 가축분뇨의 관리와 퇴비처리 시설개선, 비료의 양분 상태와 흐름을 파악하고 양분의 현황을 조사하기 위한 방법(론)을 개발할 필요성을 제언하였다. 또한 전반적인 농업정책의 목표 설정과 정부관련 부처의 협조 필요성에 대해서도 제언하였다. 지역적 특성을 반영한 농업 외 산업생산 시설과 자동차 암모니아 관리방안 및 암모니아의 특성상 대기 중에 머물 수 있는 시간을 고려하여 국외에서 유입되는 암모니아 이온성분에 대해서도 후속 연구가 필요하다고 제언하였다. Air quality in Korea hasgradually improved since 2004, but recently hazardous air pollutants likePM-2.5 tend to fluctuate in spite of the government policy efforts to improvePM-2.5. Secondary aerosol particles formed in the atmosphere bygas-to-particles conversion processes cover a significant fraction of theatmospheric aerosols, thus managing secondary aerosol particles becomesimportant to improve the air quality. However, a precursor of aerosol particleslike ammonia has not been considered as important air pollutant to reducePM-2.5. Therefore, this study explores the ammonia management to reduce fineparticulate matters (PM-2.5) emission. In particular, this studyinvestigates the main inventories of ammonia emissions, the methods tocalculate the ammonia emissions and the management of ammonia to suggestmanagement and policy directions, and follow-up studies. This study comparesthe advanced environmental policy examples and main inventories of ammoniaemissions like agriculture in other countries such as U.S, EU with the case of Korea. This study releases the several suggestions; First, investigating for the secondary aerosolparticles formation mechanism process from the inventories and monitoring theconcentration of ammonia are needed to set target for reduction of the ammoniaemissions. Second, compensating ammonia emission inventoriesandomission missing source, and improvingestimationmethods are necessary to provide sustainable management and constantsurveillance. Third, improving the livestock manure management, compostingfacility management and investigation methods for nutrient balance andfertilizer use are suggested as the improved management of ammonia emission inrural areas. This study also suggests thefollow-up studies:the studies on the industrial facilities, theemissions management plans on mobile source emission considering the urban andrural regional characteristics, and theatmospheric condition focused on the overseas transboundary ammonia.

전이성 병소에 의해 발생한 급성 충수염의 천공으로 진단된 전신병기 소세포폐암

신동원 ( Dong Won Shin ),최문한 ( Moon Han Choi ),박승식 ( Seung Sik Park ),박성우 ( Sung Woo Park ),김기업 ( Ki Up Kim ),장안수 ( An Soo Jang ),박춘식 ( Choon Sik Park ),임철완 ( Cheol Wan Lim ),고은석 ( Eun Suk Ko ),백상현 ( San 대한결핵 및 호흡기학회 2008 Tuberculosis and Respiratory Diseases Vol.65 No.3

The incidence of appendiceal metastatic cancer is quite low. In particular, in small cell lung cancer, there is a very low incidence of a metastasis to the appendix. A 75-years old man with right lower quadrant pain, cough and sputum was transferred to our hospital. Abdominal CT revealed acute appendicitis with a perforation. The patient underwent surgery. The frozen sections of the tissue obtained during surgery, indicated a malignancy, but a right hemicolectomy was not performed due to the patient`s poor general condition. The histology findings of the appendix were identified as a small cell carcinoma. The abdominal CT scan and chest x-ray at admission day showed a mass in the right lower lobe, and a further evaluation of the lesion was performed including positron emission tomography and flexible bronchoscopy with a biopsy. The pathology findings of the lung mass were also small cell lung cancer. The specimens from both sites stained positive for cytokeratin, cluster designation 56, synaptophysin, chromogranin-A and thyroid transcription factor 1. It was concluded that the appendiceal small cell cancer originated from the lung. (Tuberc Respir Dis 2008;65:230-234)