• Journal of the Korean Society for Precision Engineering
• /
• v.21 no.5
• /
• pp.83-83
• /
• 2004

The analysis of relative pose(position and rotation) between stereo cameras is very important to determine the solution that provides three-dimensional information for an arbitrary moving target with respect to robot-end. In the space of free camera-model, the rotational parameters act on non-linear factors acquiring a kinematical solution. In this paper the general solution of active stereo that gives a three-dimensional pose of moving object is presented. The focus is to achieve a derivation of linear equation between a robot′s end and active stereo cameras. The equation is consistently derived from the vector of quaternion space. The calibration of cameras is also derived in this space. Computer simulation and the results of error-sensitivity demonstrate the successful operation of the solution. The suggested solution can also be applied to the more complex real time tracking and quite general and are applicable in various stereo fields.

• Journal of the Korean Society for Precision Engineering
• /
• v.21 no.5
• /
• pp.89-90
• /
• 2004

The analysis of relative pose(position and rotation) between stereo cameras is very important to determine the solution that provides three-dimensional information for an arbitrary moving target with respect to robot-end. In the space of free camera-model, the rotational parameters act on non-linear factors acquiring a kinematical solution. In this paper the general solution of active stereo that gives a three-dimensional pose of moving object is presented. The focus is to achieve a derivation of linear equation between a robot's end and active stereo cameras. The equation is consistently derived from the vector of quaternion space. The calibration of cameras is also derived in this space. Computer simulation and the results of error-sensitivity demonstrate the successful operation of the solution. The suggested solution can also be applied to the more complex real time tracking and quite general and are applicable in various stereo fields.

• The KIPS Transactions:PartB
• /
• v.12B no.5 s.101
• /
• pp.561-566
• /
• 2005

This paper presents a visual tracking algorithm for the golf swing motion analysis by using the information of the pixels of video frames and movement of the golf club to solve the problem fixed center point in model based tracking method. The model based tracking method use the polynomial function for trajectory displaying of upswing and downswing. Therefore it is under the hypothesis of the no movement of the center of gravity so this method is not for the amateurs. we proposed method using the information of pixel and movement, we first detected the motion by using the information of pixel in the frames in golf swing motion. Then we extracted the club head and hand by a properties of club shaft that consist of the parallel line and the moved location of club in up-swing and down-swing. In addition, we can extract the center point of user by tracking center point of the line between center of head and both foots. And we made an experiment with data that movement of center point is big. Finally, we can track the real trajectory of club head, hand and center point by using proposed tracking algorithm.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.13 no.10
• /
• pp.2163-2170
• /
• 2009

We present an automated, energy minimized-based method for Lung parenchyma segmenting Chest Computed Tomography(CT) datasets. Deformable model is used for energy minimized segmentation. Quantitative knowledge including expected volume, shape of Chest CT provides more feature constrain to diagnosis or surgery operation planning. Segmentation subdivides an lung image into its consistent regions or objects. Depends on energy-minimizing, the level detail image of subdivision is carried. Segmentation should stop when the objects or region of interest in an application have been detected. The deformable model that has attracted the most attention to date is popularly known as snakes. Snakes or deformable contour models represent a special case of the general multidimensional deformable model theory. This is used extensively in computer vision and image processing applications, particularly to locate object boundaries, in the mean time a new type of external force for deformable models, called gradient vector flow(GVF) was introduced by Xu. Our proposed algorithm of deformable model is new external energy of GVF for exact segmentation. In this paper, Clinical material for experiments shows better results of proposal algorithm in Lung parenchyma segmentation on Chest CT.

• Journal of the Korean Institute of Telematics and Electronics
• /
• v.26 no.1
• /
• pp.20-28
• /
• 1989

The recognition of partially occluded objects is of prime importance for industrial machine vision applications and to solve real provlems in factory automation. This paper describes a method tc solve the problem of occlusion in a two dimensional scene. The technique consists of three steps: searching of border, extracting of line segments and clustering of hypotheses by matching probability. Computer simulation results have been tested for 20 scenes contained the 80 models, and have obtained 95% of properly correct recognition rate on the average.

• The monthly packaging world
• /
• s.251
• /
• pp.112-123
• /
• 2014

세계적인 어획량 감소와 부패하기 쉽고 보관이 어렵다는 수산물의 특성에 따라 수산물의 적절한 가공과 이에 따른 수산물의 포장은 수산물의 상품성과 부가가치를 높일 수 있는 방법으로 최근 새롭게 부각되어 지고 있다. 이러한 환경에서 부산의 수산가공선진화 단지는 수산가공업의 경쟁력 제고 및 활성화를 목적으로 정책적으로 추진되고 있다. 수산가공선진화 단지는 식품 위생 안전시설(HACCP)을 통한 수산식품의 신뢰성 확보, 원재료 및 제품의 공급 체계 확보를 통한 비용절감 및 물류 효율화 등 수산가공업체의 운영 환경구축과 함께 가공수산물의 포장디자인 관련 연구 지원시설인 포장디자인센터도 단지 내에 구축될 예정이다. 본 연구에서는 수산가공선진화 단지 내 구축될 포장디자인센터의 역할과 거시적 운영목표를 설정하고 효율적인 운영방향을 제시하고자 하는 목적으로 진행되었다. 포장디자인센터는 공공의 자산으로서 수산가공선진화단지의 입주기업 뿐 아니라 지역의 수산물 가공산업 전반에 대한 발전을 이끌어야 하며, 디자인산업과의 융합으로 새로운 디자인 수요를 창출하고 특성화하여 지역디자인산업의 진흥을 목적으로 운영되어야 한다. 이러한 목적의 달성을 위해 산업화, 지식화, 융합화, 차별화의 4가지의 비젼을 운영 컨셉으로 도출하였고 이를 바탕으로 포장디자인센터의 효율적인 운영을 위한 전략적 추진사업으로 6가지 사업을 제시하였다. 이러한 과정을 통해 디자인산업과 가공수산물산업의 융 복합이 성공적으로 운영되어 국 내외 시장에서 경쟁력을 확보하고 산업간 융합을 통한 새로운 활력 창출의 성공적인 모델이 될 수 있기를 기대한다. 본 원고는 한국브랜드디자인학회 통권 제28호에 실린 논문에서 발췌했다

• Journal of Digital Convergence
• /
• v.10 no.7
• /
• pp.179-184
• /
• 2012

The ultimate purpose of cities is 'the enhancement of quality of life in city'. In order to achieve this, it is required to optimize the Ontology-driven ubiquitous services included in the U-City and UIS of regions and communities and so on. Almost U-Service's contents are related to spatial or temporal extent. So it is important to design Spatio-temporal event schema for efficient access to U-City. There is a rapid change into an urban society in the shape of Ontology-driven ubiquitous services in which a content on a region or an incident is newly reconstructed through various ideas with the influence of the ubiquitous environment.

• Korean Journal of Social Welfare
• /
• v.35
• /
• pp.399-426
• /
• 1998

This article describers the field testing of the task-centered case management model for practice with the elderly clients in the community. Six social workers in three community center applied task centered. model to 12 elderly in community. The model tested in the field trial led to positive results. The results of task completion and problem change indicate that including elderly clients in all steps from identifying problems to suggesting and implementing tasks are important. Target problems and tasks which clients indicate gained high accomplishment. Task-centered interventions provided an intensive period of service that helped clients work on immediate problems. Moreover, they helped clients actively participate in decision making processes and in problem solving activities. Although the task centered approach is a short tenn intervention, the analysis of the field trial suggests that it can be integrated with an approach that is a long tenn in nature through re contract for different problems or unresolved problems. Several suggestion can be made to apply task-centered model for elderly in Korea. First, since one social worker handles over 60 cases, this approach can be used more effectively for new case or the elderly who needs intensive help. Second, preparing and sharing contract with client should be encouraged to help both client and social workers. Also until the social workers are familiar with this approach, there should be an intensive supervision to monitor their activities. Third, it is important to make task planner for Social workers who is working with elderly in community. Task planner is the guide line books to show steps to solve similar problems. Fourth, more efforts should be made to make resource directory in the community as well as in Korea. Fifth, case managers who handle family problems and other personal conflicts should be more trained to be confident to deal with these problems.

• 한국HCI학회:학술대회논문집
• /
• 2006.02a
• /
• pp.1354-1360
• /
• 2006

최근 놀라운 성장을 거듭하고 있는 지능형 로봇(Intelligent Robot) 기술은 기존의 주요 활용 분야였던 산업현장이나 연구실과 같은 전문가적 영역을 넘어서 지능형 엔터테인먼트(Entertainment)로봇이나 청소기 로봇의 예에서 볼 수 있듯이 인간의 주요 일상 생활 공간인 가정이나 공공기관의 서비스 분야로 점차 그 활용 영역을 넓혀가고 있다. 학습 보조 교사 도우미 로봇의 개발은 초등학교 교육 현장이 당면하고있는 각종 현안들을 로봇의 활용을 통해서 해결하고자하는 실용적인 목적에서 출발 했다. 이러한 관점에서 볼때 로봇 디자이너의 역할은 전체 개발 프로세스의 말단부에서 로봇 시스템의 외장(Appearance)을 마무리하는 역할을 넘어서 구체적 로봇시스템의 개발에 선행하여 학습보조 교사 도우미 로봇의 잠재적 활용 주체인 학생, 교사, 학부모의 입장에서 각 주체들의 내재적, 외재적 욕구를 효과적으로 만족 시킬 수있는 활용 시나리오(Application Scenario)를 도출, 개발 프로세스 전반에 걸쳐 각 개발 주체들에게 일관된 비젼(vision)과 이미지(image)를 제시하는것이라고 생각되었다. 본연구에서는 학습보조 교사 도우미 로봇 디자인 과제에 있어서 사용자 관찰(User Observation), 유저 다이어리(User Diary), 포커스그룹 인터뷰(F.G.I)등을 바탕으로 로봇의 역할 모델중심, 서비스 영역 중심, 초등학교 교육이념 구현 중심 등 3가지의 서로 다른 컨셉의 로봇 활용 시나리오(Application Scenario)를 제안하였다. 본 연구 결과는 현재 초기 단계에 있는 로봇 디자인 분야의 현실을 감안할때 전체 로봇 개발 프로세스내에서의 향후 산업 디자인이 수행해야 할 역할을 명확하게 보여준다는 점에서 그 의의가 있으며 관련 분야의 연구 활성화에 기여할 것으로 기대된다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.7
• /
• pp.1564-1572
• /
• 2011

In this paper, we propose a new histogram based hand recognition algorithm for augmented reality. Hand recognition system makes it possible a useful interaction between an user and computer. However, there is difficulty in vision-based hand gesture recognition with viewing angle dependency due to the complexity of human hand shape. A new hand recognition system proposed in this paper is based on the features from hand geometry. The proposed recognition system consists of two steps. In the first step, hand region is extracted from the image captured by a camera and then hand gestures are recognized in the second step. At first, we extract hand region by deleting background and using skin color information. Then we recognize hand shape by determining hand feature point using histogram of the obtained hand region. Finally, we design a augmented reality system by controlling a 3D object with the recognized hand gesture. Experimental results show that the proposed algorithm gives more than 91% accuracy for the hand recognition with less computational power.