• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.328-330
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• 2003

홍채 인식 시스템의 성능향상을 위해서는 전처리 단계에서 위조된 데이터나 잡음이 섞인 데이터를 걸러내는 과정이 매우 중요하다. 이 논문에서는, 강인한 홍채 인식 시스템을 위해서 두 단계로 이루어진 눈 영상 검사 알고리즘을 제안한다. 알고리즘의 첫 번째 단계에서는 동공 반지름과 눈꺼풀 움직임 변화량의 상관계수(coefficient)와 2차원 고속 퓨리에 변환(Fast Fourier Transform) 스펙트럼을 이용해 위조된 데이터를 찾아낸다. 두 번째 단계에서는 눈 영상에 눈 깜박임이나 속눈썹의 홍채영역 침범, 홍채 영상이 부분적으로 잘렸을 경우 등의 시스템의 성능저하의 원인이 되는 부적절한 데이터를 찾아낸다. 111영의 1734개의 눈 영상을 대상으로 실험한 결과, 제안된 알고리즘의 성공률은 96.5%였고 이러한 전처리 과정을 통해서 전체적인 시스템의 정확률을 향상시킬 수 있다.

• Digital Contents
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• no.12 s.127
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• pp.106-109
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• 2003

영상물의 연령등급을 심의하는 영상물등급위원회(영등위)에 온라인게임이 연신 두들겨 맞고 있다. 관련업계는‘중세 마녀 재판이 재현되고 있다’고 강하게 비판하고 있고, 영등위는‘청소년보호’를 대의명분으로 내세우며 눈도 깜짝 안하고 있다. 대표적인‘메이드 인 코리아’상품으로 우뚝서야 할 때 빨간불이 켜진 것이다. 영등위 파문과 관련된 양측의 의견을 들어 보고, 온라인게임 등급분류제도의 문제점은 없는지 짚어봤다.

• 발명특허
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• v.32 no.1 s.366
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• pp.84-87
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• 2007

• RED RIBBON
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• s.75
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• pp.25-27
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• 2007

글을 시작하기 전에 본인은 <대한에이즈예방협회 대구경북지회 56일째 인턴사원 정소영>임을 밝히며, 지금부터 우리 지회가 잘 돌아가는 이유 3가지를 펴 놓고자 하니. 모두들 눈 쫑긋 가슴 쫑긋 하시길.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.2
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• pp.349-356
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• 2020

This paper introduces the implementation of a driver's condition warning system using eye aspect ratio to prevent a car accident. The proposed driver's condition warning system using eye aspect ratio consists of a camera, that is required to detect eyes, the Raspberrypie that processes information on eyes from the camera, buzzer and vibrator, that are required to warn the driver. In order to detect and recognize driver's eyes, the histogram of oriented gradients and face landmark estimation based on deep-learning are used. Initially the system calculates the eye aspect ratio of the driver from 6 coordinates around the eye and then gets each eye aspect ratio values when the eyes are opened and closed. These two different eye aspect ratio values are used to calculate the threshold value that is necessary to determine the eye state. Because the threshold value is adaptively determined according to the driver's eye aspect ratio, the system can use the optimal threshold value to determine the driver's condition. In addition, the system synthesizes an input image from the gray-scaled and LAB model images to operate in low lighting conditions.

• Journal of Christian Education in Korea
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• v.62
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• pp.75-99
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• 2020

What means the Waldorf school based on integrative imagination to our educational reality in our days? This is the key question in this article. This article seeks to the fundamental meaning of the Waldrof school to know our educational problems. For this purpose this article explore understanding on the theosophy of Rudolf Steiner in the insufficient research until now. The theosophy of Rudolf Steiner in this article is investigated with the understanding of Triune God, human, and educational arts. The understanding of triune God is identified as the critiques to the view point of materialism, the meaning of logos in the scripture of John, the Christ as the foundation of all creatures. The understanding of human being is distinguished as the nature of body, soul, and spirit in the theosophy. Especially the nature of spirit is to see the invisible in the visible things through the eyes of mind that means esoteric spirituality not unrealistic spirituality of monasticism but integrative spirituality of overcoming the dualism between spirit and material. The educational characteristics for the integrative spirituality and imagination is called as the educational arts by Rudolf Steiner. The educational arts includes contents of the soul life, the education of freedom with individuality, and integrative education. The educational arts intends to the wholistic education with harmonious interaction of intellect, feeling, and willing to equip the individual human being in the spirit. And the educational arts educates with the harmony of story, play, art, and integrative curriculum of subject contents. The educational arts is to intend for reformation in christian education including church school and alternative school, etc. The Waldorf school needs to emphasizing the christian spirituality in the educational arts.

• RED RIBBON
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• s.68
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• pp.34-35
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• 2006

레드리본은 HIV에 감염되지 않은 사람들이 에이즈에 대해 어떻게 생각하는지 알아보기 위해 연령대별, 성별로 한명씩 에이즈에 대한 솔직한 생각을 들어볼 예정이다. 이를 토대로 에이즈 사업을 수행하는 단체, 담당자들이 각 사업을 어디에 포커스를 맞추고 어떻게 풀어나가야 하는지 그 실마리를 제공하고자 한다.

• Journal of the Institute of Convergence Signal Processing
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• v.7 no.3
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• pp.95-101
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• 2006

A face detection plays an important role in face recognition, video surveillance, and human computer interaction. In this paper, we propose a progressive threshold method to detect human faces in real time. The consecutive face images are acquired from camera and transformed into YCbCr color space images. The skin color of the input images are separated using a skin color filter in the YCbCr color space and some candidated face areas are decided by connected component analysis. The intensity equalization is performed to avoid the effect of many circumstances and an arbitrary threshold value is applied to get binary images. The eye area can be detected because the area is clearly distinguished from others in the binary image progressive threshold method searches for an optimal eye area by progressively increasing threshold from low values. After progressive thresholding, the eye area is normalized and verified by back propagation algorithm to finalize the face detection.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.37 no.2
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• pp.31-43
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• 2000

This paper presents a novel algorithm lot extraction of the eye and mouth fields (facial features) from 2D gray level face images. First of all, it has been found that Eigenfeatures, derived from the eigenvalues and the eigenvectors of the binary edge data set constructed from the eye and mouth fields are very good features to locate these fields. The Eigenfeatures, extracted from the positive and negative training samples for the facial features, ate used to train a MultiLayer Perceptron(MLP) whose output indicates the degree to which a particular image window contains the eye or the mouth within itself. Second, to ensure robustness, the ensemble network consisting of multiple MLPs is used instead of a single MLP. The output of the ensemble network becomes the average of the multiple locations of the field each found by the constituent MLPs. Finally, in order to reduce the computation time, we extracted the coarse search region lot eyes and mouth by using prior information on face images. The advantages of the proposed approach includes that only a small number of frontal faces are sufficient to train the nets and furthermore, lends themselves to good generalization to non-frontal poses and even to other people's faces. It was also experimentally verified that the proposed algorithm is robust against slight variations of facial size and pose due to the generalization characteristics of neural networks.

• The Optical Journal
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• s.146
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• pp.33-36
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• 2013

삼성전자(대표 권오현)가 지난 6월 27일부터 7월 9일까지 수원 삼성 디지털시티 모바일연구소 홍보관에서 개최한 '삼성 이노베이션 포럼(Samsung Innovation Forum)'이 성황리에 막을 내렸다. 삼성전자가 1993년 신경영을 선언하고 20년간 걸어온 혁신의 역사를 한 눈에 살펴볼 수 있는 자리로 꾸며진 이번 행사에는 삼성전자의 제품과 기술, 서비스의 발전사를 보여주는 다양한 전시물들이 소개돼 많은 관람객들의 관심을 모았다.