• 한국컴퓨터그래픽스학회논문지
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• 제22권1호
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• pp.1-8
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• 2016

본 논문은 프리미티브 모델을 이용하여 다양하고 복잡한 모델에 대한 변형을 직관적으로 제어할 수 있는 새로운 방법을 제안한다. 복잡한 원본 모델을 아우를 수 있는 단순화된 프리미티브 모델에 대응시킨 뒤, 프리미티브 모델의 변형기법을 적용한 결과를 이용해 원본 모델을 역산하는 방식으로 탄성체를 제어하는 방법을 제안한다. 하나의 프리미티브 모델만으로 서로 다른 형태를 가진 탄성체 모델들을 모두 제어할 수 있기에 한 종류의 모델로는 한 종류의 탄성체 시뮬레이션밖에 수행하지 못했던 기존 기법과 차별점을 가지고 있다. 결과적으로, 다수의 모델을 변형시키기 위해 다수의 예제를 요구했던 기존 기법에 비해, 본 논문은 하나의 예제 프리미티브를 편집하여 다양한 모델의 변형을 손쉽고 직관적으로 제어하는 결과를 보여주고 있다.

• 한국정보과학회논문지:시스템및이론
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• 제32권4호
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• pp.168-176
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• 2005

본 논문에서는 모델 기반으로 한 장의 사진으로부터 중점 정보를 포함한 선분을 이용하여 물체를 3차원 재구성하는 방법을 제안한다. 미리 정의된 다면체를 원시기하모델로 사용하며 한 장의 영상으로부터 복원을 시도하였다. 미리 정의된 다면체 모델을 원시기하모델로 사용하며 사용자가 원시기하모델(primitive)의 각 대응점(correspondence point)을 사진에 매핑 시키는 것으로서 3차원 재구성이 수행된다. 기존의 모델기반 3차원 재구성은 카메라 파라미터들을 복원하거나 반복(iteration)을 통한 오차최소화 기법을 사용하였다. 하지만 본 논문은 원시기하모델에 포함되어 있는 선분들과 그 선분들의 중점 정보로부터 선분을 3차원 복원하며 복원된 선분들로부터 원시기하모델을 재구성하는 방법을 제안한다. 이러한 방법은 선분을 복원하는 단계에서 요구되는 최소한의 카메라 파라미터(focal length) 만으로 원시기하모델을 재구성 할 수 있다.

• 로봇학회논문지
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• 제8권1호
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• pp.1-7
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• 2013

Body gesture Recognition has been one of the interested research field for Human-Robot Interaction(HRI). Most of the conventional body gesture recognition algorithms used Hidden Markov Model(HMM) for modeling gestures which have spatio-temporal variabilities. However, HMM-based algorithms have difficulties excluding meaningless gestures. Besides, it is necessary for conventional body gesture recognition algorithms to perform gesture segmentation first, then sends the extracted gesture to the HMM for gesture recognition. This separated system causes time delay between two continuing gestures to be recognized, and it makes the system inappropriate for continuous gesture recognition. To overcome these two limitations, this paper suggests primitive body model encoding, which performs spatio/temporal quantization of motions from human body model and encodes them into predefined primitive codes for each link of a body model, and Selective/Asynchronous Input-Parallel State machine(SAI-PSM) for multiple-simultaneous gesture recognition. The experimental results showed that the proposed gesture recognition system using primitive body model encoding and SAI-PSM can exclude meaningless gestures well from the continuous body model data, while performing multiple-simultaneous gesture recognition without losing recognition rates compared to the previous HMM-based work.

• 전자공학회논문지S
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• 제34S권2호
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• pp.63-70
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• 1997

This paper proposes a new algorithm for recognizing polyhedral objects using a single 2-D image. It is base don a new representation scheme having two level hierarchey. In the lower level, geometrical features of each primitive surface are represented using their signatures and the variation of signature due to rotation is represented suing the rotation map. In the higher level, topological features are represented in the inter-surface description table(SDT). Based on the proposed representaton scheme, loer level database searched to find a matching primitive surface. The srotation map determines the degree of rotation as well as the matchness. If all surfaces in a test object find their matching primitive surfaces, its structural information is compared with the SDTs of object models. If primitive surfaces of a test object equal to tha tof certain model and satisfy inter-surfaces relationship in SDT, a test object is recognized as the model.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 추계 수산관련학회 공동학술대회발표요지집
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• pp.197-197
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• 2001

An oceanographic measurement by Senjyu and Watanabe (1999) shows that a sudden drop of temperature in the northern Japanese coastal regions occurs with the passing of Typhoon Oliwa, September in 1997. The temperature variation ranges 6 to 7$^{\circ}C$. A three-dimensional primitive model (Princeton Ocean Model) is implemented to examine how it happens. (omitted)

• 전자공학회논문지
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• 제50권4호
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• pp.65-72
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• 2013

본 논문에서는 멤리스터 기반의 논리 게이트와 멤리스터-CMOS 기반의 프리미티브 IP 설계 방법을 제안하였다. 회로 설계를 위한 멤리스터 모델을 제시하고 멤리스터의 AND 및 OR 연결을 기본으로 멤리스터-CMOS 회로설계를 위한 프리미티브 IP설계 방법을 제안하였고, $0.18{\mu}m$ CMOS 공정과 멤리스터 SPICE 모델을 이용한 시뮬레이션을 통해 검증되었다. 회로는 멤리스터와 CMOS 결합을 하여 레이아웃 설계를 하고 네트리스트를 추출하였다. 디지털 프리미티브 IP들에 대해 기존의 CMOS와 면적비교를 수행하였으며, 멤리스터-CMOS 전가산기는 CMOS 전가산기에 비하여 47.6 %의 면적이 감소되었다.

• 전자공학회논문지C
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• 제35C권7호
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• pp.1-10
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• 1998

The first thing in designing application-specific instruction set processor is having instruction set closely matching hardware characteristics. This instruction set design problem can be more complicated when cobined with implementation method selection problem of each instruction. Our processor model supports two kinds of instructions-primitive or special instructions. Primitive instructions are implemented using common multifunctional hardware such as ALU. Special instructions require a set of dedicated hardware, which actually functions as a coprocessor to the main processor. In this case, special instructions and primitive instructions can be executed independently. In this paper, we present novel algorithm for genrating special instructions for given application. Parallelism between special instructions and primitive instructions is also considered during the performance estimation stage of generated special instructions.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2001년도 The Pacific Aisan Confrence On Intelligent Systems 2001
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• pp.410-420
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• 2001

A primitive conceptualization is defined as the set of all intended situations. A non-primitive conceptualization is defined as the set of all the pairs every of which consists of an intended knowledge system and the set of all the situations admitted by the knowledge system. The reality of a domain is considered as the set of all the situation which have ever taken place in the past, are taking place now and will take place in the future. A conceptualization is defined as precise if the set of intended situations is equal to the domain reality. The representation of various elements of a domain ontology in a model of the ontology is considered. These elements are terms for situation description and situations themselves, terms for knowledge description and knowledge systems themselves, mathematical terms and constructions, auxiliary terms and ontological agreements. It has been shown that any ontology representing a conceptualization has to be non-primitive if either (1) a conceptualization contains intended situations of different structures, or (2) a conceptualization contains concepts designated by terms for knowledge description, or (3) a conceptualization contains concept classes and determines properties of the concepts belonging to these classes, but the concepts themselves are introduced by domain knowledge, or (4) some restrictions on meanings of terms for situation description in a conceptualization depend on the meaning of terms for knowledge description.

• IEIE Transactions on Smart Processing and Computing
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• 제1권3호
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• pp.192-200
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• 2012

In order for humans and robots to interact in daily life, robots need to understand human speech and link it to their actions. This paper proposes a hierarchical behavior model for robot action control using natural language commands. The model, which consists of episodes, primitive actions and atomic functions, uses a sentential cognitive system that includes multiple modules for perception, action, reasoning and memory. Human speech commands are translated to sentences with a natural language processor that are syntactically parsed. A semantic parsing procedure was applied to human speech by analyzing the verbs and phrases of the sentences and linking them to the cognitive information. The cognitive system performed according to the hierarchical behavior model, which consists of episodes, primitive actions and atomic functions, which are implemented in the system. In the experiments, a possible episode, "Water the pot," was tested and its feasibility was evaluated.

• Korea-Australia Rheology Journal
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• 제18권2호
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• pp.99-102
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• 2006

Primitive chain network model for block copolymers is used here to simulate molecular dynamics in the entangled state with acceptable computational cost. It was found that i) the hooking procedure rearranging the topology of the entangled network is critical for the equilibrium structure of the system, and ii) simulations accounting for the different chemistry, i.e., with a biased hooking probability based on interaction parameter ${\chi}$ for selection of the hooked partner, generates a reasonable phase diagram.