• 대한인간공학회지
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• 제34권5호
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• pp.411-426
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• 2015

Objective: The goal of this thesis is to design the interaction structure and framework of system to recognize sign language. Background: The sign language of meaningful individual gestures is combined to construct a sentence, so it is difficult to interpret and recognize the meaning of hand gesture for system, because of the sequence of continuous gestures. This being so, in order to interpret the meaning of individual gesture correctly, the interaction structure and framework are needed so that they can segment the indication of individual gesture. Method: We analyze 700 sign language words to structuralize the sign language gesture interaction. First of all, we analyze the transformational patterns of the hand gesture. Second, we analyze the movement of the transformational patterns of the hand gesture. Third, we analyze the type of other gestures except hands. Based on this, we design a framework for sign language interaction. Results: We elicited 8 patterns of hand gesture on the basis of the fact on whether the gesture has a change from starting point to ending point. And then, we analyzed the hand movement based on 3 elements: patterns of movement, direction, and whether hand movement is repeating or not. Moreover, we defined 11 movements of other gestures except hands and classified 8 types of interaction. The framework for sign language interaction, which was designed based on this mentioned above, applies to more than 700 individual gestures of the sign language, and can be classified as an individual gesture in spite of situation which has continuous gestures. Conclusion: This study has structuralized in 3 aspects defined to analyze the transformational patterns of the starting point and the ending point of hand shape, hand movement, and other gestures except hands for sign language interaction. Based on this, we designed the framework that can recognize the individual gestures and interpret the meaning more accurately, when meaningful individual gesture is input sequence of continuous gestures. Application: When we develop the system of sign language recognition, we can apply interaction framework to it. Structuralized gesture can be used for using database of sign language, inventing an automatic recognition system, and studying on the action gestures in other areas.

• International Journal of Computer Science & Network Security
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• 제22권1호
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• pp.129-138
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• 2022

With the increasing reliance of computing systems in our everyday life, there is always a constant need to improve the ways users can interact with such systems in a more natural, effective, and convenient way. In the initial computing revolution, the interaction between the humans and machines have been limited. The machines were not necessarily meant to be intelligent. This begged for the need to develop systems that could automatically identify and interpret our actions. Automatic gesture recognition is one of the popular methods users can control systems with their gestures. This includes various kinds of tracking including the whole body, hands, head, face, etc. We also touch upon a different line of work including Brain-Computer Interface (BCI), Electromyography (EMG) as potential additions to the gesture recognition regime. In this work, we present an overview of several applications of automated gesture recognition systems and a brief look at the popular methods employed.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 1995년도 추계학술대회 학술발표 논문집
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• pp.85-91
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• 1995

This paper presents a system which recognizes the Korean Sign Language(KSL) and translates into normal Korean speech. A sign language is a method of communication for the deaf-mute who uses gestures, especially both hands and fingers. Since the human hands and fingers are not the same in physical dimension, the same form of a gesture produced by two signers with their hands may not produce the same numerical values when obtained through electronic sensors. In this paper, we propose a dynamic gesture recognition method based on feature analysis for efficient classification of hand motions, and on a fuzzy min-max neural network for on-line pattern recognition.

• 한국통신학회논문지
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• 제33권5C호
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• pp.371-377
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• 2008

본 논문은 비전에 기반한 사람의 양팔 제스처의 모델링과 인식에 관한 연구이다. 우리는 양팔 제스처 인식을 위한 특징점의 추출에서부터 제스처의 분류에 이르는 전체적 틀을 제안하였다. 먼저, 양팔 제스처의 모델링을 위해 색채 기반의 양손 추적 방법을 제안하였고, 추출된 양손의 궤적 정보를 효과적으로 선택하게 하는 제스처 구(Phrase) 분석법을 제시하였다. 선택된 특징 점들의 시퀀스(sequence) 들로 이루어진 훈련 데이터들의 최대 공통부열(Longest Common Subsequence) 정보를 이용하여 제스처를 모델링하고 이에 따른 유사도 척도를 제안하였다. 제안된 방법론을 공항 등에서 이용하는 항공기 유도 수신호에 적용하였고, 실험을 통해 제안된 방법론의 효율성과 인식성능을 보였다.

• 전자공학회논문지C
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• 제34C권2호
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• pp.61-70
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• 1997

Human-hand gestures have been used a means of communication among people for a long time, being interpreted as streams of tokens for a language. The signed language is a method of communication for hearing impaired person. Articulated gestures and postures of hands and fingers are commonly used for the signed language. This paper presents a system which recognizes the korean sign language (KSL) and translates the recognition results into a normal korean text and sound. A pair of data-gloves are used a sthe sensing device for detecting motions of hands and fingers. In this paper, we propose a dynamic gesture recognition mehtod by employing a fuzzy feature analysis method for efficient classification of hand motions, and applying a fuzzy min-max neural network to on-line pattern recognition.

• 전자공학회논문지C
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• 제34C권9호
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• pp.68-76
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• 1997

This paper presents a system which recognizes dynamic hand gestures for virtual reality(VR). A dynamic hand gesture is a method of communication for a computer and human who uses gestures, especially both hands and fingers. Since the human hands and fingers are not the same in physical dimension, the same form of a gestrue produced by two persons with their hands may not have the same numerical values which are obtained through electronic sensors. In this paper, we apply a fuzzy min-max neural network and feature analysis method using fuzzy logic for on-line pattern recognition.

• 한국정보과학회논문지:소프트웨어및응용
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• 제32권8호
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• pp.759-768
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• 2005

본 논문에서는 다중 혼합 특징 정보를 저 차원 제스처 심볼로 구성하여 제스처를 인식하는 알고리즘에 대해 기술한다. 기존의 기하학적인 특징 기반 방법이나 외관기반 방법에서는 깔, 다리의 위치나 몸의 형상 정보만을 특징 값으로 이용하기 때문에 유사한 신체 동작이나 신체 부위의 움직임에 따라 애매한 결과를 나타내었지만 제안한 방법은 신체의 어느 부위가 움직이는지를 나타내는 부분특징정보(partial feature information)와 전체적인 신체의 형상을 표현하는 전역특징정보(global feature information)를 이용함으로써 동작의 구분뿐만 아니라 유사한 동작을 인식할 수 있는 장점이 있다. 그리고 비교적 적은 계산량과 높은 인식률 때문에 감시 시스템이나 지적 인터페이스 시스템 같은 여러 응용 분야에 적용될 수 있다.

• 한국위성정보통신학회논문지
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• 제9권1호
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• pp.57-64
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• 2014

최근 물리적 디바이스의 도움 없이 사람이 시스템과 인터랙션 할 수 있는 인간 친화적인 인간-기계 인터페이스가 많이 연구되고 있다. 이중 대표적인 것이 본 논문의 주제인 비전기반 제스처인식이다. 본 논문에서 우리는 설정된 가상세계의 객체와의 인터랙션을 위한 손 제스처들을 정의하고 이들을 인식할 수 있는 효과적인 방법론을 제안한다. 먼저, 웹캠으로 촬영된 저해상도 영상에서 사용자의 양손을 검출 및 추적하고, 손 영역을 분할하여 손 실루엣을 추출한다. 우리는 손 검출을 위해, RGB 공간에서 명암에 따라 두개의 타원형 모델을 이용하여 피부색을 모델링하였으며, 블랍매칭(blob matching) 방법을 이용하여 손 추적을 수행하였다. 우리는 플러드필(floodfill) 알고리즘을 이용해 얻은 손 실루엣의 행/열 모드 검출 및 분석을 통해 Thumb-Up, Palm, Cross 등 세 개의 손모양을 인식하였다. 그리고 인식된 손 모양과 손 움직임의 콘텍스트를 분석해서 다섯 가지 제스처를 인식할 수 있었다. 제안하는 제스처인식 방법론은 정확한 손 검출을 위해 카메라 앞에 주요 사용자가 한 명 등장한다는 가정을 하고 있으며 많은 실시간 데모를 통해 효율성 및 정확성이 입증되었다.

• ETRI Journal
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• 제34권3호
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• pp.466-469
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• 2012

In this letter, we propose a dual autostereoscopic display platform employing a natural interaction method, which will be useful for sharing visual data with users. To provide 3D visualization of a model to users who collaborate with each other, a beamsplitter is used with a pair of autostereoscopic displays, providing a visual illusion of a floating 3D image. To interact with the virtual object, we track the user's hands with a depth camera. The gesture recognition technique we use operates without any initialization process, such as specific poses or gestures, and supports several commands to control virtual objects by gesture recognition. Experiment results show that our system performs well in visualizing 3D models in real-time and handling them under unconstrained conditions, such as complicated backgrounds or a user wearing short sleeves.

• 한국멀티미디어학회논문지
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• 제19권8호
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• pp.1320-1328
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• 2016

In this paper, we propose a novel security system using hand gesture recognition. Proposed system does not create a password as numbers, but instead, it creates unique yet simple pattern created by user's hand movement. Because of the fact that individuals have different range of hand movement, speed, direction, and size while drawing a pattern with their hands, the system will be able to accurately recognize only the authorized user. To evaluate the performance of our system, various patterns were tested and the test showed a satisfying result.