• 환경영향평가
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• 제2권1호
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• pp.39-55
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• 1993

The importance of urban and regional natural park increases because of the needs for preserving the natural resources and providing with natural recreation space in nature. This planning of natural park management should be established based on the research of the various natural resources in the park. But for the lack of effective data synthesizing methods and concepts, only some restricted factors for zoning plan are considered even though GIS computer system for large complex simulation is used. Therefore, in this study three ecological zoning models such as Basic Factor Model (BFM), Visual Landscape Model (VLM) and Comprehensive Ecological Model (CEM) are proposed and applied to Byounsan Peninsula Nature Park(BPNP) for comparison with the current natural park zoning. The BFM has three components -elevation, slope and vegetation. The VLM has applied with six components -elevation, slope, vegetation, road type, and the visual distance. Finally the CEM's modelling factors have included all of BFM, VLM components are added with the land use type, nature and historic resource factors. The zoning concept of BPNP was based on "Minimization" focused on the specific factors. But introduced modelling concept is "Optimization" based on the total ecological environment. So the result of the modelling has larger area for preservation and development zoning compared with the current zoning whose characteristics are ambiguous which allows the environmental destruction. The future study issues will be the determination of the weighting factor, component reconsideration based on the ground truth data and the agriculture residential area zoning.

• Annals of Clinical Neurophysiology
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• 제3권1호
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• pp.26-30
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• 2001

Purpose : Eyeball movement is one of the main artifacts in EEG. A new approach to the removal of these artifacts is presented using independent component analysis(ICA). This technique is a signal-processing algorithm to separate independent sources from unknown mixed signals. This study was performed to show that ICA is a useful method for the separation of EEG components with little data deformity. Methods : 12 sets of 10 sec digital EEG data including eye opening and closure were obtained using international 10~20 system scalp electrodes. ICA with 18 tracings of double banana bipolar montage was performed. Among obtained 18 independent components, two components, which were thought to be eyeball movements were removed. Other 16 components were reconstructed into original bipolar montage. Power spectral analysis of EEGs before and after ICA was done and compared statistically. Total 12 pairs of data were compared by visual inspection and relative power comparison. Results : Waveforms of each pair looked alike by visual inspection. Means of relative power before and after ICA were 29.16% vs. 28.27%, 12.12% vs. 12.41%, 10.55% vs. 10.52%, and 19.33% vs. 18. 33% for alpha, beta, theta, and delta, respectively. These values were statistically same before and after ICA. Conclusions : We found little data deformity after ICA and it was possible to isolate eyeball movements in EEG recordings. Many other components of EEG could be selectively separated using ICA.

• 한국의류산업학회지
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• 제8권6호
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• pp.679-686
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• 2006

The purposes of this study are to look into the formative characteristics of the bolero and to evaluate the visual effects and images according to changes in the line and length of the connecting lines of the neck, center front, and hem lines from analyzing the bolero style shown in 2005 S/S domestic fashion. Theoretical examination of the bolero was made philologically with reference books, theses and some articles. And the bolero style shown in 2005 S/S domestic fashion was analyzed with pictures from a fashion magazine "Ceci" and a fashion website 'Interfashion Planning" from Feb. to Aug. of 2005. As a result, the basic lines of the bolero are classified into three different categories according to the connecting lines of the neck, center front line, and hem line. We altered the length of the bolero in three categories with the changes in the waistline-5 cm, 8 cm, and 11 cm. For the visual evaluation, 9 stimuli were placed in mannequins, and were estimated by the experts in the fashion design. For the visual evaluation according to changes in the line and length of the bolero, we used 12 pairs of items to find the visual effects, and 13 pairs of adjectives to measure the visual images. The stimuli and adjectives were randomly given to the evaluators and were evaluated by the 7-Point Likert Type Scale. Data we got from this experiment was analyzed statistically by using the SPSS 12.0 and practiced the Factor Analysis and Correlation Analysis. In the current women's garments, the bolero is a new fashion item which combines with jackets or cardigans. Usually the bolero jacket is made out of a cotton, denim, leather or fur, and the bolero cardigan usually used knitted materials. The design could be very varied depending on the roundness of the center front line, and hem line. According to the result of factor analysis of the visual effects of the Bolero, four factors were identified the whole silhouette, neck line, breasts and shoulders. According to the result of factor analysis of the visual image of the Bolero, three factors were identified maturity, tenderness, neatness.

• ETRI Journal
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• 제24권5호
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• pp.401-404
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• 2002

In this paper, we propose a non-blind watermarking method that embeds a pseudo-random sequence (watermarks) into wavelet DC components. The DC area is not suitable for embedding because of severe visual degradation. We overcome the degradation problem by embedding watermarks into visually insensitive locations. We compare our experimental results with respect to JPEG compression with Cox’s popular correlation-based method. We also compare the robustness of our technique with other methods registered in CheckMark. This study reveals that the proposed method simultaneously provides good fidelity in quality as well as robustness against external attacks.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1992년도 춘계학술대회 논문집
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• pp.343-348
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• 1992

Using the real-time image processing technique, we have developed an automatic visual inspection system which detects the defects of the surface muonted components in PCB( missing components, mislocation, mismounts, and reverse polarity, etc ) and collects the quality control and production management data. An image processing system based on a commercial parallel processor, TRANSPUTER by which the image processing time can be largely reduced was designed. Analyzing the collected data, the proposed inspection system contributes to the productivity improvement throughthe reduction of defective rate.

• 사상체질의학회지
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• 제22권1호
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• pp.41-48
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• 2010

1. Objective There has been a few trials to diagnose Sasang Constitution by using EEG, but has not been studied intensively. For the purpose of practical diagnosis, the characteristics of EEG for each constitution should be studied first. Recently it has been shown that Sasang Constitution might be related to harm avoidance and novelty seeking in temperament and character profiles. Based on this finding, we propose a visual stimulation method to evoke a EEG response which may discriminate difference between constitutional groups. Through the experiment with this method, we tried to reveal the characteristics of EEG of each constitutional groups by the method of event-related potentials. 2. Methods: We used facial visual stimulation to verify the characteristics of EEG for each constitutional groups. To reveal characteristic in sensitivity and latency of response, we added several levels of noise to facial images. 6 male subjects(2 Taeeumin, 2 Soyangin, 2 Soeumin) participated in this study. All subjects are healthy 20's. To remove artifacts and slow modulation, we removed EOG contaminated data and renormalization is applied. To extract stimulation related components, normalized event-related potential method was used. 3. Results: From Oz channels, it is verified that facial image processing components are extracted. For lower level noise, components related to the visual stimulation were clearly shown in Oz, Pz, and Cz channels. Pz and Cz channels show differences among 3 constitutional groups in maximum around 200 msec. Especially moderate level of noise looks appropriate for diagnosis. 4. Conclusion: We verified that the visual stimulation with facial emotion might be a good candidate to evoke the differences between constitutional groups in EEG response. The differences shown in the experiment may imply that the process of emotion has distinct tendencies in latencies and sensitivity for each consitutional group. And this distinction might be related to the temperament profile of consitutional groups.

• 한국멀티미디어학회논문지
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• 제3권1호
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• pp.53-62
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• 2000

디지털 워터마킹은 디지털 컨텐츠의 저작권을 보호하기 위한 중요한 기술로 취급되어 오고 있다. 삽입되는 워터마크는 압축, 필터링에서 cropping에 이르기까지 다양한 공격에 대하여 견고하여야 한다. 특히, JPEG은 인터넷 응용을 위한 뛰어난 정지 영상 압축 표준이기 때문에 JPEG 압축에 견관 디지털 워터마킹 기법이 특별히 요구된다. 지금까지 제안된 대부분의 디지털 워터마킹 기법은 JPEG의 품질수준(quality level)을 고려하지 않고 픽셀이나 계수를 변조하여 처리한다. 이것은 워터마크의 제거가 쉽게 이루어진다. 본 논문에서는 JPEG 압축시에 발생되는 영상의 손실을 계산하기 위해 JPEG 압축의 품질 계수를 워터마크 삽입 시의 파라메터로써 이용하여 JPEG 압축에 의한 차를 계산한다. 인간 시각의 성질 중에서 밝기 차의 식별력을 고려함과 동시에 영상의 에지 정보를 이용한 시각 성분을 계산한다. 이와 같이 JPEG 압축에 의한 영상의 손실과 인간의 시각 성질을 고려한 워터마크를 구성한 후에 영상에 삽입하는 새로운 디지털 워터마킹 기법을 제안한다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.570-573
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• 2006

College GIS and remote sensing education usually consists of commercial software packages implementations in the classroom. Computer programming is quite important when college graduates work in private or public sectors relevant with GIS and remote sensing implementations. The objective of this paper was to develop a valley management system which implements GIS and remote sensing as the key components for education. The Valley Authority is entitled with water resource protection for sustainable drinking water supply of the second largest city in Taiwan. The test area consists of three different government agencies, Forest Service, EPA, and Water Resource Agency. Materials were provided by the Valley Authority in ArcGIS file format. MapObjects have made the GIS development process much easier. Remote sensing with image manipulation functions were provided by computer programming with Visual Baisc.NET and Visual C#.NET. Attributes inquiry are performed by these two computer languages as well. ArcGIS and ArcPad are also used for simple GIS manipulations of the test area. Comparison between DIY and commercial GIS can be made by college students. Functions provided by the developed valley management system depending on how many map layers have been used and what types of MapObjects components have been used. Computer programming experience is not essential but can be helpful for a college student. The whole process is a step-by-step sequence which college students can modify to depict their capability in GIS and remote sensing. The development process has gone through one semester, three hours every week in 18 weeks. College students enrolled in this class entitled with GIS showed remarkable progresses both in GIS and remote sensing.

• 한국빅데이터학회지
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• 제4권1호
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• pp.53-61
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• 2019

주변 세포의 구조적, 생화학적 지지체를 제공하는 세포 외 기질은 세포의 분열과 분화 등을 좌우하는 세포생리 조절인자이다. 바이오 분야에서는 3차원 조직공학 지지체인 스캐폴드를 제작하고, 제작한 스캐폴드에 줄기세포를 배양해 동물에 이식해 조직 재생력을 평가한다. 이는 조직 내 콜라겐과 같은 구성성분에 좌우된다. 따라서 조직 내 구성성분의 포함율 및 분포를 파악하는 것이 매우 중요한데, 이에 관한 데이터를 염색된 조직 이미지의 색상을 분석함으로써 얻어낸다. 이때 이미지 수집부터 분석까지의 과정이 적지 않은 비용이 소모되고 있고, 수집되고 분석된 데이터를 연구 기관마다 상이한 포맷으로 관리하고 있다. 따라서 데이터 통합관리 및 분석결과 검색 등이 이루어지지 않고 있다. 본 논문에서는 관련 빅데이터를 통합적으로 관리할 수 있는 데이터베이스를 구축하고, 이 연구 분야에서 중요한 분석 척도인 색상을 기준으로 검색할 수 있는 바이오 이미지 통합 관리 및 검색 시스템을 제안한다.

• 디자인학연구
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• 제14권3호
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• pp.127-134
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• 2001

이 연구는 2차원 회화를 관객과 상호작용하는 3차원영상애니메이션으로 구현한 참여예술(Interactive Art) 형태의 실험적 시각작품연구사례이다. 대상으로 하는 정지된 회화가 가진 시각적 요소들로부터 유추된 애니메이션의 시각적 아이디어에 따라서 대상회화는 컴퓨터3차원영상의 애니메이션으로 구현되고 사용자의 반응에 따라 전개되도록 멀티미디어프로그래밍 되었다. 작품의 형식과 기법은 본 연구자에 의하여 연구된 내용을 기반으로 하였으며 연구의 대상(Material)으로는 전 세계적으로 유명한 벨기에 화가인 르네 마그리트의 초현실주의 구상회화들로 설정하였다. 본 논고에서는 정지된 회화를 상호작용이라는 요소가 개입된 애니메이션으로 구현할 때에 발상 될 수 있는 다양한 시각사례의 연구, 2차원 회화를 3차원 영상으로 구현하기 위한 3차원영상 및 이미지프로세싱 기법연구, 상호작용을 위한 애니메이션의 설정기법 및 전체적인 작품구성 기법연구, 그리고 멀티미디어 설정 및 사용자 인터페이스에 이르기까지의 연구내용을 중심으로 기술하였다.