• Title/Summary/Keyword: Feature-based Method

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Development of a Clinical Decision Support System Utilizing Support Vector Machine (Support Vector Machine을 이용한 생체 신호 분류기 개발)

  • Hong, Dong-Kwon;Chai, Yong-Yoong
    • The Journal of the Korea institute of electronic communication sciences
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    • v.13 no.3
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    • pp.661-668
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    • 2018
  • Biomedical signals using skin resistance have different characteristics according to stress diseases. Biological diagnostic devices for diagnosing stress diseases have been developed by using these characteristics, and devices have been developed so that the signals measured by the skin storage meter can be easily analyzed. Experts in the field will look directly at the output signal to determine the likelihood of any stress disorder. However, it is very difficult for a person to accurately determine whether a person to be measured has a stress disorder by analyzing a bio-signal measured by each person to be measured, and the result of the judgment is very likely to be wrong. In order to solve these problems, we implemented the function of determining the signal of a stress disorder by using the machine learning technique. SVM was used as a classification method in consideration of low computing ability of measurement equipment. Training data and test data were randomly generated for each disease using error range 5 based on 13 diseases. Simulation results showed more than 90% decision accuracy. In the future, if the measurement equipment is actually applied to the patients, we can retrain the classifier with the newly generated data.

A Study on Academic Costume Design -Focusing on the Design of Academic Costume Representing the University Identity of Seoul Women's University- (학위복 디자인 연구 -서울여자대학교의 UI를 구현한 학위복 개발을 중심으로-)

  • Chun, Hei-Jung;Na, Hyun-Shin;Lee, Kyung-Ah;Lee, So-Ryung;Kim, Hee-Kyun;An, Chang-Hyun;Park, Jin-Young
    • Journal of the Korean Society of Costume
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    • v.58 no.8
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    • pp.30-46
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    • 2008
  • This study aims to develop an academic costume design representing the university identity of Seoul Women's University. As a formal dress and uniform symbolizing the dignity of study, academic costume arouses self-esteem of the owner and represents the symbolic order. UI(University Identity) is a system that embodies the identity of the university and create a certain image, and thus actively delivers the image pursued by the university. The study method to develop a new academic costume design of Seoul Women's University includes the theoretical background of UI and academic costume, investigation on the current rendition of academic costume, home and abroad, and a survey to collect the basic data for academic costume design development. Most of the respondents presented negative opinions on the existing academic costume and graduation cap, which do not show any clear distinction from those of other universities. They made a pressing demand for the development of an academic costume that well represents the image of the university by reflecting the university feature and symbol. As a result of the survey, it turned out that they preferred an academic costume with short length balloon sleeves to the exiting one, and that as for neck line and front hook, those of the existing one were preferred. This study developed and presented 9 different models of graduation gowns and 5 different caps based on the theoretical investigation and survey concerning academic costume. It is expected that the academic costume representing the university identity not only arouses self-esteem of the owner, but also enhances the university's position.

A Study on the Stand Structure of Korean Fir Natural Forest in Naesorak through the Investigation of Stand Structure Diversity Features (구조다양성 표현인자 연구를 통한 내설악 전나무 고목림 (자연림) 구조 조사)

  • Youn, Young-Il
    • Korean Journal of Environmental Biology
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    • v.29 no.4
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    • pp.345-352
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    • 2011
  • We investigated 12 plots using Herles' diversity of structure feature calculation method, which is based on the Shannon-Weaver-Index for estimation of species diversity. This study sought to facilitate a more systematic understanding of the structure of the forest stands in the Korean fir natural forest in Naeseorak. Although the change in the forest structure is dependent on the change in phase, factors of the natural forest were confirmed by associating individual structure features. As shown in the results of diversity of structure features, the diversity of the structure of the fir tree natural forest in Naeseorak was relatively low. The association between species diversity and overall factors (diversity) related with the change in the structure was found to be weak. The association between the number of trees and the diversity of forest structure stands was moderate, showing that the higher the number of trees, the less diverse the forest structure is. In most of the investigated plots, stem volume and volume of dead tree were associated with the height of natural regeneration, but these were not associated with other factors. Height of natural regeneration was found to be correlated to stand density, crown area and crown class, whereas tree height and BHD did not have any association with other factors. Overall, the results of the investigation are helpful in understanding the change in the structure of Korean fir natural forest. Further investigation with more plots is required.

Knit Design by Applying African Textile Pattern -Focused on Color Knit Jacquard- (아프리카 직물 문양을 응용한 니트디자인 -컬러 니트 자카드를 응용하여-)

  • Yoo, Kyung-Min;Kim, Young-Joo;Lee, Youn-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.31 no.9_10
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    • pp.1475-1486
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    • 2007
  • This study aims to develop knitted ware design to meet desire to express diversity in the modern fashion design so that we designed knitted ware by applying african geometric pattern and color to suggest new knitted ware design. We collect data about african texture pattern through technical books, publications, internet, and preceding research and visit and investigate the African museum. We investigate knitted Jacquard texture through preceding research and collect sample and data which is insufficient in the data source. The conclusions in this study are summarized as follows: First, African textile pattern is formulated with animism based on their religious view of art for a basis and African regards nature like animal and plant as a motive and interprets nature in the so that they can create symbolized geometric features that constitute African texture pattern. Those patterns is composed of extremely geometric figures so that they we fit to apply for color jacquad knit design. Second, color knitted jacquad can be distinguished by knitting method and status of knitting as 7 kinds of techniques such as Nomal, Bird'eye, Floating, Tubular, Ladder's back, Blister, Transfer Jacquard, and as a result of preceding research and knitting texture directly, jacquard technique makes different texture under same condition like consistent spinning rate and same crochet hook. Third, Bird'eye Jacquard used generally to make knitted ware and Ladder's back Jacquard, Tubular Jacquard used to make knitted ware light are fit to apply them to 7GG and 12GG machines. We design a cloak as a outer garment, a coat shaped like one-piece dress and a coat with hood by using Tubular Jacquard which can make thick texture and design a jacket, a skirt and a one-piece dress by using Bird'eye Jacquard. we make a light and flimsy one-piece dress by using Ladder's back Jacquard. Fourth, we apply the contrast of $4{\sim}6$ color and line and the contrast of texture and raw material to jacquard in order to emphasize texture property and visual property.

Categorization of Humor types in Animations (애니메이션에서의 유머 유형구분에 관한 연구 -드림웍스의 <슈렉(Shrek)>을 중심으로-)

  • Park, Yeong-Won;Im, Yu-Sang
    • Journal of Science of Art and Design
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    • v.11
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    • pp.51-78
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    • 2007
  • Entertainment Industry is a high value-added business and its market includes the whole world. With high-tech industry, it is said that entertainment industry strengthen country's competitiveness, and the Korean government is trying to find a way to develop the animation industry. Some domestic feature animations were made, but they failed to get sufficient audiences. Meanwhile, Shrek 2, made by PDI, has earned about 92,000,000,000$ through just theatrical revenue. The reason is that domestic animations are not exciting. Contents should have amusement in it. The humor is the most important thing to make fun. So this thesis suggest to analyse Humor Types in animations. It is based on several theories about Humor. The types of humor defined by the previous studies are summarized into (1) humor, (2) wit, (3) satire and (4) irony. I categorize the productive methods of visual humor into (1) visual pun, (2) visual parody and (3) visual paradox adopting Henri Bergson's theory of the production methods of humor. And I comment on humorous scenes of Shrek in points of design basic elements, such as (1) visual elements, (2) relational elements and (3) practical elements. And I classify humor responses into the incongruity theory, the superiority theory, and relief theory. Therefore this study suggest a reasoned method to categorize the humor types effectively for producing or analyzing various types of humor effects in animation fields.

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Study on Digital Restoration by 3-dimensional Image for Gilt Bronze Cap Excavated from the Ancient Tomb of Andong, Goheung (고흥 안동고분 출토 금동관모의 3차원 디지털 복원연구)

  • Lee, Joo-Wan;Oh, Jung-Hyun;Kim, Sa-Dug
    • Journal of Conservation Science
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    • v.27 no.2
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    • pp.181-190
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    • 2011
  • A precision measurement and digital image restoration of the 5th century's gilt bronze cap of Baekje dynasty, excavated from the ancient tomb of Andong, Goheung in 2006, was undertaken. The objective of the scanning is to preserve precise feature of the artefact in the form of digital data by embodying it in 3 dimensional space. Acquirement of the data has been undertaken in the following process : 3D scanning to obtain 3D shape and color information(original data photographing)-3D modelling(joining original data and restoring non-photographed or damaged area)-CG image production. Production of restoration CG image was based on joined shape of original data and each part's measurement on CAD. Non-photographed part and area of loss was restored referring actual measurement and research result of excavated cap from the 5th to 8th century. 3D image restoration is one of artefact restoration methods which restores artefact without risk. It is also undertaken with historical research. As result, this method can enhance aesthetic and academic value of the artefact by successful restoration.

Data Mining based Forest Fires Prediction Models using Meteorological Data (기상 데이터를 이용한 데이터 마이닝 기반의 산불 예측 모델)

  • Kim, Sam-Keun;Ahn, Jae-Geun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.8
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    • pp.521-529
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    • 2020
  • Forest fires are one of the most important environmental risks that have adverse effects on many aspects of life, such as the economy, environment, and health. The early detection, quick prediction, and rapid response of forest fires can play an essential role in saving property and life from forest fire risks. For the rapid discovery of forest fires, there is a method using meteorological data obtained from local sensors installed in each area by the Meteorological Agency. Meteorological conditions (e.g., temperature, wind) influence forest fires. This study evaluated a Data Mining (DM) approach to predict the burned area of forest fires. Five DM models, e.g., Stochastic Gradient Descent (SGD), Support Vector Machines (SVM), Decision Tree (DT), Random Forests (RF), and Deep Neural Network (DNN), and four feature selection setups (using spatial, temporal, and weather attributes), were tested on recent real-world data collected from Gyeonggi-do area over the last five years. As a result of the experiment, a DNN model using only meteorological data showed the best performance. The proposed model was more effective in predicting the burned area of small forest fires, which are more frequent. This knowledge derived from the proposed prediction model is particularly useful for improving firefighting resource management.

Realtime Facial Expression Control and Projection of Facial Motion Data using Locally Linear Embedding (LLE 알고리즘을 사용한 얼굴 모션 데이터의 투영 및 실시간 표정제어)

  • Kim, Sung-Ho
    • The Journal of the Korea Contents Association
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    • v.7 no.2
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    • pp.117-124
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    • 2007
  • This paper describes methodology that enables animators to create the facial expression animations and to control the facial expressions in real-time by reusing motion capture datas. In order to achieve this, we fix a facial expression state expression method to express facial states based on facial motion data. In addition, by distributing facial expressions into intuitive space using LLE algorithm, it is possible to create the animations or to control the expressions in real-time from facial expression space using user interface. In this paper, approximately 2400 facial expression frames are used to generate facial expression space. In addition, by navigating facial expression space projected on the 2-dimensional plane, it is possible to create the animations or to control the expressions of 3-dimensional avatars in real-time by selecting a series of expressions from facial expression space. In order to distribute approximately 2400 facial expression data into intuitional space, there is need to represents the state of each expressions from facial expression frames. In order to achieve this, the distance matrix that presents the distances between pairs of feature points on the faces, is used. In order to distribute this datas, LLE algorithm is used for visualization in 2-dimensional plane. Animators are told to control facial expressions or to create animations when using the user interface of this system. This paper evaluates the results of the experiment.

A Design and Implementation of RSS Data Collecting Engine based on Web 2.0 (웹 2.0 기반 RSS 데이터 수집 엔진의 설계 및 구현)

  • Kang, Pil-Gu;Kim, Jae-Hwan;Lee, Sang-Jun;Chae, Jin-Seok
    • Journal of Korea Multimedia Society
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    • v.10 no.11
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    • pp.1496-1506
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    • 2007
  • The environment of web service has changed a great deal due to the progress of internet technology and positive participation of users. The established web service is static and passive, but the recent web service is becoming dynamic and active. Web 2.0 reflects current web service change well. The primary feature of web 2.0 is positive participation of users. Since the size of generated information is becoming larger, it is highly required to share the information fast and correctly. The technology to satisfy this need is web syndication and tagging in web 2.0. The web syndication makes feeds for another site or users to receive the content of web site. In addition, the tagging is the kernel of a information. Many internet users share rapidly the information through tag search. In this paper, we propose the efficient technique to improve the web 2.0 technology such as web syndication and tagging by using the data collection engine. Data collection engine has stored in a database, a user's Web site to use the information. and it has a user's Web site with access to updated data to collect. The experimental results show that our approach can improve the search speed up to 3.14 times better than the existing method and reduce the size of data up to 66% for building associated tags.

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Generation of Multi-view Images Using Depth Map Decomposition and Edge Smoothing (깊이맵의 정보 분해와 경계 평탄 필터링을 이용한 다시점 영상 생성 방법)

  • Kim, Sung-Yeol;Lee, Sang-Beom;Kim, Yoo-Kyung;Ho, Yo-Sung
    • Journal of Broadcast Engineering
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    • v.11 no.4 s.33
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    • pp.471-482
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    • 2006
  • In this paper, we propose a new scheme to generate multi-view images utilizing depth map decomposition and adaptive edge smoothing. After carrying out smooth filtering based on an adaptive window size to regions of edges in the depth map, we decompose the smoothed depth map into four types of images: regular mesh, object boundary, feature point, and number-of-layer images. Then, we generate 3-D scenes from the decomposed images using a 3-D mesh triangulation technique. Finally, we extract multi-view images from the reconstructed 3-D scenes by changing the position of a virtual camera in the 3-D space. Experimental results show that our scheme generates multi-view images successfully by minimizing a rubber-sheet problem using edge smoothing, and renders consecutive 3-D scenes in real time through information decomposition of depth maps. In addition, the proposed scheme can be used for 3-D applications that need the depth information, such as depth keying, since we can preserve the depth data unlike the previous unsymmetric filtering method.