• 천문학회보
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• 제46권2호
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• pp.46.2-46.2
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• 2021

We present solar event auto detection using deep-learning-based object detection algorithms and DeepSDO event dataset. DeepSDO event dataset is a new detection dataset with bounding boxed as ground-truth for three solar event (coronal holes, sunspots and prominences) features using Solar Dynamics Observatory data. To access the reliability of DeepSDO event dataset, we compared to HEK data. We train two representative object detection models, the Single Shot MultiBox Detector (SSD) and the Faster Region-based Convolutional Neural Network (R-CNN) with DeepSDO event dataset. We compared the performance of the two models for three solar events and this study demonstrates that deep learning-based object detection can successfully detect multiple types of solar events. In addition, we provide DeepSDO event dataset for further achievements event detection in solar physics.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권12호
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• pp.3180-3199
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• 2013

While non-predefined object segmentation (NDOS) distinguishes an arbitrary self-assumed object from its background, predefined object segmentation (DOS) pre-specifies the target object. In this paper, a new and novel method to segment predefined objects is presented, by globally optimizing an orientation-based objective function that measures the fitness of the object boundary, in a discretized parameter space. A specific object is explicitly described by normalized discrete sets of boundary points and corresponding normal vectors with respect to its plane shape. The orientation factor provides robust distinctness for target objects. By considering the order of transformation elements, and their dependency on the derived over-segmentation outcome, the domain of translations and scales is efficiently discretized. A branch and bound algorithm is used to determine the transformation parameters of a shape model corresponding to a target object in an image. The results tested on the PASCAL dataset show a considerable achievement in solving complex backgrounds and unclear boundary images.

• 항공우주정책ㆍ법학회지
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• 제20권2호
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• pp.277-292
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• 2005

우주개발진흥법은 동 법령의 목적, 및 그 주요 개념 규정에 있어서 항공우주산업개발 촉진법과의 구별야 확연하도록 도모하고 있으며, "우주개발"의 개념을 새로이 규정하면서 이를 꾀하고 있다. 규정된 개념의 특징은 우주공간을 탐사하고 이용하는 각종행위는 인공위성 및 발사체 등과 같이 우주 환경에서 사용되기 위한 기기와 장비의 기술 개발에 의해서만 가능한 것이기에 우주공간의 탐사와 이용은 그러한 기술개발을 포함하는 개념으로 보아야 한다는 데에 있다. 이에 동법이 추구하는 우주개발은 "우주산업"과는 구분되는 것이기에 법령 체계와의 조화 문제가 극복되고 있다고 볼 수 있다. 아울러 우주개발진흥볍은 국제협약상의 의무를 이행하면서, 아울러 최소한의 규제에 의해서 필요한 목적을 달성하기 위한 방식을 택하고 있다. 즉, 우주물체의 등록제도, 국내에서의 발사 허가제도 등을 통해서 우주활동에 대한 규제를 꾀하고 있다.

• 한국실내디자인학회논문집
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• 제13권4호
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• pp.127-137
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• 2004

Since 20th century, the exhibition has expanded to more diverse fields and recognized as the medium which can build network among the Art, Human and society. Space design, although developed within mutual interaction and consideration of environment factors, has been treated without those background. Therefore it is straightforward to examine the exhibition space design synthetically not limit it by the analytical elements. Assuming three main mutual interactions, object human, and environment, we have attempt the typological analysis to the museum exhibition space by studying characteristics. While the exhibition space design has been analyzed through two dimensional interpretation, on this study, we structuralize diverse discussion of the exhibition space design by relation-centered and relative analysis. Therefor we examine the characteristic of design expression through typology of both physical and behavioral feature. In the conclusion, the outcome provides insights into the relationships among object, human and environment and useful measurements to designer who outline exhibition space design.

• 전자공학회논문지B
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• 제33B권11호
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• pp.11-21
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• 1996

Robot manipulators constituing multi-robot system must exert the desired motion force on an object to preserve tghe fine motion of it. The forces exerte on an object by the end-effectors of multi-inducing force and the internal force. Here, motion-inducing force effects the motion of an object, but internal force as lies in the null space of an object coordinate can't effect it. The motion of an object can't track exactly the desired motion by the effect of an object, but internal force as lies in the null space of the effect of internal force component, therefore internal force component must be considered. In this paper, first, under assumption that we can estimate exactly the parameter of dynamics, we constitute paper, first, under assumption that we can estimate exactly the parameter of dynamics, we constitute the controller concerning internal force. And we obtain the internal force as projecting force sensor readings onto the space spanned by null basis set of jacobian matrix. Using the resolved acceleration control method and the fact that internal force lies in the null space of jacobian matrix, we construct the robust control law to preserve the robustness with respect to the uncertainty of mainpulator parameters.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2010년 춘계학술발표회 논문집
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• pp.9-10
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• 2010

Spatial conflict problem can be solved by computing the space in which a new input object can be located avoiding conflict, and displacing it in the computed space. In this study, we propose a optimal method to displace an input object to given space.

• 한국실내디자인학회논문집
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• 제24권2호
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• pp.67-77
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• 2015

This study is to contemplate an ultimate goal and new methodology the architecture and space design community should pursue forward by analyzing concepts in Kengo Kuma's idea of "Anti-object" and examining his design methods and characteristics. To this end, I reviewed space design methods and features in his book of "Anti-Object" and his architectures built around in 2000. The result is as in the followings. (1) Contact is an essential concept of "Anti-object" to connect and integrate divided materials and consciousness with time and space. (2) Elimination is a meaningful way to reverse "cohesiveness" of agglomerated cluster which is a form of object and reconstruct it into the form of passive and acceptive "Anti-object". This idea is realized through overlap of material property and removal of massing. (3) Minimization is a concept of "Anti-object" to set the temporality free from constraints of materials. Three-dimensional transparent faces and lines or patterns of porous materials can be used to remove static and coercive volume. (4) A particle is a "reflector of its environment." It rebuilds one-way or disconnected communication between human and architecture into an interactive one. Kengo Kuma materializes this "particle" by exploring positional relation with physical paths, precise details and measurements.

• 조명전기설비학회논문지
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• 제12권3호
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• pp.74-82
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• 1998

본 연구에서는 초음파 센서에 의해 물체정보를 획득하고 불변모멘트 백터를 이용하여 이동 및 회전에 불변하는 물체특정점올 추출한다. 그리고 이를 SQFM(냉f요R없비1핑 Feature Map) 신경회로망의 입력데이터로 사용하여 물체의 이동 및 회전에 무관한 물체인식 시스템을 제안하였다. 또한 SOFM 신경회로망의 출력 neuron space 크기 및 반복학습회수와 물체인식률과의 관계를 실험하였다. 출력 neuron space와 반복학습회수를 각각 $4\times4~10\times10$까지, 10~50회까지 변화시쳐 물체인식올 실험한 결과 물체인식률은 동일한 값인 92.3[% 를 나타내었다.

• 제어로봇시스템학회논문지
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• 제12권11호
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• pp.1102-1110
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• 2006

This paper addresses the problem of computing grasp stability of the object for two-fingered robots in two dimensions. The concepts of force-closure and dual space are introduced and discussed in novel point of view, and we transform friction cones in a robot work space to line segments in a dual space. We newly define a grasp stability index by calculating intersection condition between line segments in dual space. Moreover, we propose a method to find the optimal grasp points of the given object by comparing the defined grasp stability index. Its validity and effectiveness are investigated and verified by simulations for quadrangle object and elliptic objects.

• 한국컴퓨터그래픽스학회논문지
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• 제25권3호
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• pp.115-122
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• 2019

본 연구에서는 사용자 참여를 유도하는 가상공간 스토리 북을 기획하고 구현하여 연구 실험 하였다. 구현한 스토리북은 시나리오를 진행하기 위해서 사용자가 적극적으로 시나리오상의 미션을 수행해야 시나리오가 진행이 되는 것이다. 가상공간 스토리 북의 시나리오를 진행하는 절차는 다음과 같다. 첫 번째, 프로젝션으로 가상공간을 구현한다. 두 번째, 시나리오에 맞추어 사용자는 실제 물체를 가져와 가상의 공간에 실제 물체를 삽입한다. 세 번째, 실제 물체와 대응되는 3D모델이 증강한다. 마지막으로 사용자는 증강된 이미지와 실제 물체를 자유롭게 제어함으로 가상공간에서 이루어지는 시나리오를 체험한다. 구현한 결과물은 3명의 5살 어린이들에게 유저 스터디를 진행하였다. 실험에 참여한 어린이는 가상공간 스토리북을 매우 잘 이해하는 모습을 보였으며 실제 물체를 가상의 공간에 집어넣는 과정을 이해하는 모습이 관찰되었다. 또한 어린이는 현실과 가상을 혼돈하지 않고 실제 물체와 가상 이미지를 구분하는 모습을 확인할 수 있었다. 결과적으로 가상공간 스토리 북을 통해 가상의 공간위에 실제 물체를 증강시키는, 방식을 가진 가상공간 스토리북의 가능성을 확인 할 수 있었다.