• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.08a
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• pp.138-141
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• 2008

본 논문에서는 영상의 화질 개선을 위해 일반적으로 사용되는 방법인 미디안 필터와 샤프닝 필터의 단점들을 개선한 알고리즘을 제안한다. 제안하는 방법은 영상의 통계적 정보를 이용하여 평탄영역과 평탄하지 않은 영역을 구분하고 각 영역에 대해 저주파 통과 필터와 고주파 통과필터를 각기 다르게 적용하여 기존의 다른 화질 개선 필터 보다 향상된 개선 효과를 기대 할 수 있다. 또한 적용할 스케일 값의 크기만 결정하면 각 화소에서의 범주와 세기는 영상의 통계적 정보를 이용한 매핑 함수를 통해 자동으로 생성된다. 따라서 기존의 미디안 필터와 샤프닝 필터가 가지고 있던 복잡한 파라메터의 설정과정이 필요 없이 평탄영역에서의 잡음제거 및 블러링 효과와 활동성이 높은 영역에서의 선명화 효과를 동시에 얻을 수 있다.

• Proceedings of the Korea Society of Design Studies Conference
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• 2002.05b
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• pp.22-23
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• 2002

• 베이커리
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• no.8 s.361
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• pp.28-47
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• 1998

• Journal of Broadcast Engineering
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• v.22 no.6
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• pp.702-712
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• 2017

In this paper, we propose an unsharp masking algorithm using Laplacian as a weight map for the signal structure and a gamma transformation algorithm using image mean intensity as a weight map for mean intensity. The conventional weight map based on the patch has a disadvantage in that the brightness in the image is shifted to one side in the signal structure and the mean intensity region. So the detailed information is lost. In this paper, we improved the detail using unsharp masking of patch unit and proposed linearly combined the gamma transformed values using the average brightness values of the global and local images. Through the proposed algorithm, the detail information such as edges are preserved and the subjective image quality is improved by adjusting the brightness of the light. Experiment results show that the proposed algorithm show better performance than conventional algorithm.

• Science of Emotion and Sensibility
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• v.7 no.1
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• pp.23-28
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• 2004

In this paper, we investigated the affective components of facial beauty. In study 1, we did factor analysis of affective evaluations of the faces, and about 65% of the variances are explained by only two factors. Two factors were named 'sharp' and 'soft', respectively. In study 2, the correlation between facial beauty and affective evaluations was analyzed, and the correlation between facial beauty and sharp factor was significant. In study 3, we made the new images by morphing and warping the faces: 'average', 'high-ranked', and 'exaggerated'. The participants evaluated the 'high-ranked' face more beautiful than the 'average' face, and the 'exaggerated' face more beautiful than the 'high-ranked' face. The rating of affective words on the faces showed that the 'average' face was related to 'soft' impression, the 'high-ranked' image to 'sharp' impression, and the 'exaggerated' face might have double impression. These results might support the directional hypothesis for the facial beauty.

• Journal of the Institute of Electronics and Information Engineers
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• v.49 no.11
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• pp.56-63
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• 2012

In this paper, adaptive unsharp masking using bilateral filter, edge-preserving smoothing filter is proposed to reduce the overshoot and jagging artifact in sharpening images. Previous image enhancement methods including unsharp masking(UM) can emphasize high-frequency details strongly, but often cause several artifacts such as overshooting, noise, jagging and so on. Proposed image enhancement method preserves edges well because of using bilateral filter and sensitively controls a weight according to edge's directions. Therefore, it enhances sharpness and effectively reduces overshoot and jagging artifacts. Simulation results comparing output of previous AUM with proposed method show that proposed algorithm makes images properly enhanced, and we know that overshoot and jagging artifacts are many reduced.

• Archives of design research
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• v.15 no.3
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• pp.63-72
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• 2002

I made the three main estimated head about the facility of mechanical pencil which we always use in normal days. The head are these, the first is apparent usability by experiment, the second is the feeling when grasping, the third is the feeling when writing. After making the head, 1 selected the head which give the effect to the facility and make sure the interaction between heads by the method of actual test with 36 samples. After this test, 1 can find that there is no high interaction between the facility and the intuitively feeling by experiment. It's because the expectation which was made by experiment for the facility is higher than the real. but there is high interaction between the feeling of wearing and the feeling of writing. The mechanical pencil which has good facility is that the total length is long(169mm), the thickness is big($\Phi$8.5mm), the weight is little bit heavy(21.4g), the intersection is not circle, the surface where is hold by fingers has across grooves, and the body is glossy.

• Digital Contents
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• no.5 s.84
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• pp.44-49
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• 2000

지식의 보고 도서관. 도서관은 출판물로 가득한 창고이다. 그러나 사이버 시대의 도서들은 사상공간에 차곡차곡 쌓이고 있다. 그간 디렉토리만을 실을 수밖에 없는 현실을 벗어나 이제는 도서 전문을 싣는 시대로 바뀐다. 물론 사이버 도서관은 거창한 건물도 필요가 없다. 가상의 세계. 그렇지만 현실의 세계 공간을 차지하고 있지는 않지만 실존하는 세계.미래의 도서관은 3차원의 세계를 뛰어넘고 있다. 더불어 가능한 것과 불가능한것의 한계를 짚어가며 데이터베이스의 새영역을 열어간다.

• Horticultural Science & Technology
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• v.17 no.5
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• pp.569-571
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• 1999

The effects of training methods on growth and yield of white spine cucumber (Cucumis sativus L. cv. Sharp-1) were examined. The numbers of nodes, leaf area and root weight were in the order of, from high to low, ateral vine, main plus lateral vine, and main vine training. The total and marketable fruit yields were higher by the lateral training method than those by the other ones. The labor required for training was in the order of, from low to high, lateral vine, main vine, and main plus lateral vine training methods.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.985-988
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• 2007

This paper presents techniques to make image enhancement using unsharp masking. It is the technique to make image enhancement by automatically find the three parameters that makes hard to use the unsharp mask technique. To optimize the three parameters(Threshold, Amount, Radius), at first classify the pixels in the image to three groups, and then according to the groups, apply the unsharp mask to the image differently. We experimented and analyzed the rate of image enhancement by comparing images which is enhanced by human and which is enhanced by proposed technique.