• Journal of KIISE:Databases
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• v.36 no.6
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• pp.446-454
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• 2009

Among various region detector and shape feature extraction method, MSER(Maximally Stable Extremal Region) and SIFT and its variant methods are popularly used in computer vision application. However, since SIFT is sensitive to the illumination change and MSER is sensitive to the scale change, it is not easy to apply the image similarity retrieval. In this paper, we present a Scale and Rotation Invariant Region Feature(SRIRF) descriptor using scale pyramid, MSER and affine normalization. The proposed SRIRF method is robust to scale, rotation, illumination change of image since it uses the affine normalization and the scale pyramid. We have tested the SRIRF method on various images. Experimental results demonstrate that the retrieval performance of the SRIRF method is about 20%, 38%, 11%, 24% better than those of traditional SIFT, PCA-SIFT, CE-SIFT and SURF, respectively.

• The Bulletin of The Korean Astronomical Society
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• v.40 no.1
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• pp.87.4-88
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• 2015

고등학교 1학년 공통과학(융합과학) 중 천문 분야의 교수 학습 지원을 위한 스마트교육 콘텐츠 자료실을 개발하였다. 공통과학과 관련한 현장 연구의 결과들은 개념 전달의 어려움과 함께 과학적 사고를 위한 탐구활동이 절대적으로 부족함을 제시하고 있다. 이에 교사들이 현장에서 활용할 수 있는 스마트교육 콘텐츠를 정리하고 이를 소개하여 학생들이 과학적인 탐구 활동을 통해 천문학 개념 이해에 도달 할 수 있도록 돕고자 하였다. 자료실 개발을 위해 공통과학 각 단원별 내용요소를 정리하고, 내용요소별로 관련된 스마트교육 콘텐츠를 수집한 후, 가장 적합하고 유용하다고 여겨지는 자료들만을 골라 이미지, 동영상, 시뮬레이터, 활동으로 분류하였다. 수집 및 분류한 스마트교육 콘텐츠들을 효율적이며 지속적으로 제공하기 위해서 온라인 자료실 형태의 사이트(astroedu.knue.ac.kr)로 개발하였다. 의견을 수렴하기 위해 현직 및 예비 교사들로부터 두 번의 공개 시연을 거쳐 수요자 중심으로 보완 작업을 실시하였다. 개발된 사이트는 교사와 학생들에게 필요한 스마트교육 콘텐츠를 찾아 제공하는 중간 공급자가 되어 교수 학습 지원의 역할을 할 수 있을 것으로 기대된다.

• Journal of The Korean Association For Science Education
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• v.13 no.1
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• pp.48-55
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• 1993

In this study, kindergarten teachers' and secondary science teachers', total number of 117 in Taegu, images of scientists and their respected scientists were explored through the Draw-A-Scientists-Test and Network Analysis methods. Main results of the study can be summarized as follows: 1) Teachers, in general, showed some stereotyped images of scientists. But kindergarten teachers have more stereotyped ones than secondary science teachers do. 2) Teachers tended to respect some scientists through those scientists' personal characteristics, especially affective ones. But while kindergarten teachers seemed to consider scientists' contributions to society and their affective characteristis more important, secondary science teacher tendeded to consider scientists' contributions to science and their cognitive characteristics.

• Science of Emotion and Sensibility
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• v.17 no.4
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• pp.41-50
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• 2014

This study examined the characteristics of brain's reaction pattern concerning the preference for product images and compared them with the result of subjects' intuitive evaluation of their preference for the same materials. Two tests were conducted; the first one that calculated comfort properties based on brainwave measurements in order to examine the impression given by the images of products presented separately, one-by-one, and the second one that had subjects evaluate the preference directly by comparing the images of all products simultaneously. The first test was titled 'Independent Cognitive Response' and the second test, 'Relative Cognitive Response', and their characteristics were as follows. In the 'Independent Cognitive Response', the state of emotion was expressed in absolute values based on the comparison with the information accumulated through the subject's own experience and the feeling expressed as 'pleasant' or 'unpleasant' persisted as absolute values. In the 'Relative Cognitive Response', the state of emotion relative to the information of other images compared in the stage of perceiving the images was expressed, and in this case, the state of emotion described as 'calm' or 'excited' acted as relative values.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.76-79
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• 2007

수화는 하나의 제스처가 하나의 단어를 나타내는 수화 단어와 한글을 알파벳으로 표현하는 지문자로 구성되어 있다. 본 논문에서는 USB 카메라로부터 촬영한 영상을 얻고 히스토그램을 이용하여 피부색 영역을 추출한다. 얼굴 영역 추적을 활용하여 이미지를 그리드화하고 지문자의 위치를 파악하여 초성, 중성, 종성을 구분하고 한글 음절을 구성하였다.

• Journal of Science and Technology Studies
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• v.6 no.1 s.11
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• pp.89-118
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• 2006

The formation of early korean scientific community is a dynamic process of korean modern history in which colonialization, liberation, United States Army Military Government and Korean War is included. Particularly, scientist's crossing over the border into north korea and south korea have profound effect on the early stage of our scientific community. This period is so important to understand the nature of korean scientific community that we need to re-interpret the role of 'ideology' in the development of scientific community. On the other hand, war is a important element in our formation of the image of the science. This study purported to interpret the problem of political ideology, it's role in the formation of early scientific society, it's implication on our idea of science positively. Also the study is a an attempt to re-construct the scientist's struggle(1945-1950) to demarcate new science from old, colonial science.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.6
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• pp.3599-3608
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• 2014

This paper discusses the cognitive function of the image, focusing on the thought-evoking function of the image. Collages artworks were developed to determine how specifically the thought-evoking function of an image takes effect in actual cases. In addition, the cognitive responses of the research participants on the image were analyzed, centering on the thought-evoking function of the image, through an in-depth interview. The image performs the function to concentrate attention on a specific object and to process it more thoroughly. The image increases the immersion of the participants, evoked thought and activated conversation. This study probed the cognitive function of the image and is expected to greatly expand our understanding of human cognition. In particular, it is expected to provide useful insight into the integration of science and art.

• Journal of Gifted/Talented Education
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• v.11 no.3
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• pp.85-97
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• 2001

This study was to gain a suggestion how to educate the science gifted student and manage the science gifted education center by analyzing the science gifted student's perception of the science, scientist and vocation. One seventy and eight science gifted students were involved in the questionnaire to investigating the perception of science, scientist and vocation. As the results, many of science gifted students thought the convenience as the positive aspect of science and the environmental pollution as the negative aspect of science. Science gifted students considered most scientists a diligent person, researcher and what's more, they are careless about home. They suggested much more of foreign scientists like Einstein, Edison, etc. than Korean ones as respectable scientists. Scientist is a major vocation that they want and know in the science area, while some students want to be a doctor, occurred to science singer. The mystery, difficulty, complexity, scientist, etc. occurred to science gifted students when they heard the ‘science’. According to the results, there are in need of the new educational programs for the science gifted students and science gifted education center. One of the aims of the science gifted education center is the judgment and cultivation of the science gifted student. Therefore, the science gifted student to be educated to improve positively the images of science and scientist. In addition to, they should get a concern about the vocation in science area and to be a famous scientist.

• Journal of Science and Technology Studies
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• v.10 no.2
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• pp.107-141
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• 2010

Visualization techniques are transformed into reliable representations through socio-technological processes which include the agreement on the instrument and the embodiment of practices in relevant scientific communities. Visual representations thus produced are justified by realistic and epistemic virtues in science. This paper analyzes different visual images presented in the scientific papers of two research groups who argue different theories about the mechanism of face perception. These two scientific groups use the same fMRI technology; yet, different experimental paradigms and visual stimuli change their hypotheses into distinct testable theories, which in turn lead to different evidences to support their own theories. Visual evidences are intermediate representations which lie between fMRI brain images and scientific theories, and theoretical models obtain the scientific value based on the consistency in the chain of visual representations. This study shows that representations in science tend to be good representations within the context of scientific communities. It will provide a chance to think of the value and limit of the scientific knowledge

• Proceedings of the Korean Vacuum Society Conference
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• 2014.02a
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• pp.422.2-422.2
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• 2014

가스장 이온원(GFIS: Gas Field Ionization Source)은 전자현미경보다 분해능이 향상된 이온현미경의 광원으로 사용하기 위하여 연구되고 있고, 큰 각전류 밀도, 작은 크기의 가상 이온원 그리고 좁은 에너지 퍼짐을 특징으로 한다. 여러 가지 장점을 가지고 있는 GFIS을 개발하기 위해서는 GFIS에서 발생된 이온빔의 형상을 관찰 것이 매우 중요하며, 이러한 관찰을 위한 시스템에는 주로 마이크로 채널 플레이트 (MCP: Micro Channel Plate)가 사용된다. MCP는 채널내부에 입사한 입자의 에너지에 의해서 생성된 이차전자를 수 천 배에서 수 백 만 배 이상 증폭시켜 형광판에 조사하고 발광시키는 방법으로 작은 신호를 영상으로 관찰 할 수 있도록 한다. MCP의 큰 증폭비는 작은 크기의 신호를 큰 신호로 증폭하여 관찰하는데 용이하여, GFIS 방법으로 생성된 이온빔(이온빔 전류 값은 pA 수준)을 관찰하기에 적합하다. 그러나 MCP를 이용하여도 증폭된 이온빔의 세기가 매우 작기때문에 생성된 이온빔 형상을 정확하게 관찰하기 위해서는 MCP의 형광판을 촬영하는 카메라 노출시간을 길게하여 데이터 수집 시간을 늘려야 하는 문제가 있다. 본 발표에서는 이온빔 형상 관찰에 소요되는 시간을 단축하기 위하여 MCP의 잡음이 GFIS의 이온빔 이미지 관찰에 미치는 영향을 분석하고 이를 제거 방법을 소개한다. 본 연구에서는 GFIS 방출 이온빔의 이미지에 포함된 MCP 잡음 특성을 장(전계)이온현미경 (Field Ion Microscope)실험을 통하여 분석하였고, 디지털 이미지 처리 방법을 이용하여 방출 이온빔 이미지에서 MCP 잡음을 제거하여 방출 이온빔 이미지만 추출할 수 있었다. 본 연구에서 제안한 방법을 GFIS 방출 이온빔 관찰시스템에 적용함으로써 기존 방법에 비해 노출시간을 단축하여 방출 이온빔을 관찰 할 수 있었으며, 노이즈 제거 효과로 향상된 이온빔 형상을 얻을 수 있었다. 본 연구결과의 관찰시간 단축과 향상된 이온빔 형상 획득은 이온현미경 개발에 필수적인 단원자 이온빔을 보다 효율적으로 개발할 수 있으며 디지털 이미지 처리로 GFIS 이온빔 생성을 자동화하는데 응용할 수 있다. 더불어 기존방법에 비해 이미지 획득을 위한 MCP의 노출시간을 단축할 수 있으므로 실험장비 수명 단축 방지 및 관리에 큰 장점이 있다.