• 복식문화연구
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• 제4권3호
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• pp.349-359
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• 1996

The research was designed to find out the effects of design elements ; ①color, ②pattern, on image perception of clothing by using a qualitative depth interview method. The subjects were 40 women who lived in Taejon and aged 20 to 40. The interview results were both hand recorded and tape recorded for further analysis by researchers and judge groups. And the results were as follows. 1. The most preferred colors appeared to be blue and black, while stripes, checks and flowers were most favorite patterns. 2. There were individual difference in color and pattern perception, however the color image of yellow was brightness, red was dashing, green comfortable, blue cool, and black tightness. The image of geometric pattern was modesty and natural motif pattern was dynamics. 3. The tow major forces which affected the image of design elements were appeared as followed : 1) Color images affected by the image of natural objects which obtained the color. 2) Individuals past experience and emotional status also affected the personal image perception. 4. The color and pattern preference for the Koran traditional customes and Western tow piece were significantly different and this result imply cultural stereotyping on image perception of design elements. On conclusion, the results supported the research model of form perception and image evaluation.

• 방송공학회논문지
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• 제16권4호
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• pp.584-595
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• 2011

최근 RGB 영상과 깊이맵이 동시에 제작되어 공급되고 있다. 깊이맵은 사용자의 용도에 따라 다양한 형태로 변환되어 입체영상 제작에 사용된다. 깊이맵을 활용하는 기법이 새로이 소개되고 있는데, 한 예로 의료 분야에서 2D 영상의 컬러를 변환하여 지각 깊이감을 개선하는 영상처리 기술에 대한 관심이 높아지고 있다. 본 논문에서는 기존의 컬러 변환을 통한 2D 영상의 지각 깊이감 개선을 입체영상에 적용하여, 3D 지각 깊이감을 동시에 향상시키는 방법을 제안한다. 이를 위해 대조 변환 및 배경 다크닝 방법을 제안하고, 실험을 통해 제안 방법이 상기 목적을 얻을 수 있는 것을 검증하였다. 주관적 실험에서는 입체감 향상 및 피로도 측정을 통해 제안 방법의 성능 및 단점을 제시하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2009년도 정보 및 제어 심포지움 논문집
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• pp.28-30
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• 2009

This paper describes a 3-DTIP(3-D Tour Into Picture) using depth map for a Korean classical painting being composed of persons and landscape. Unlike conventional TIP methods providing 2-D image or video, our proposed TIP can provide users with 3-D stereoscopic contents. Navigating inside a picture provides more realistic and immersive perception. The method firstly makes depth map. Input data consists of foreground object, background image, depth map, foreground mask. Firstly we separate foreground object and background, make each of their depth map. Background is decomposed into polygons and assigned depth value to each vertexes. Then a polygon is decomposed into many triangles. Gouraud shading is used to make a final depth map. Navigating into a picture uses OpenGL library. Our proposed method was tested on "Danopungjun" and "Muyigido" that are famous paintings made in Chosun Dynasty. The stereoscopic video was proved to deliver new 3-D perception better than 2-D video.

• 디자인학연구
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• 제13권4호
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• pp.77-83
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• 2000

본 연구에서는 표면의 거칠기를 나타내는 척도인 요철의 깊이와 피치(pitch)의 변화에 따라 피실험자들이 느끼는 거칠기의 정도를 세 가지의 실험을 통하여 알아보았다. 첫 번째 실험은 임의로 나열해 놓은 샘플들을 거칠기의 정도에 따라 순서대로 나열하도록 하는 실험이었는데, 작업을 수행하는데 소요된 시간을 척도로 하여 분석을 수행하였다. 두 번째 실험은 임의로 나열해 놓은 샘플들을 표면 거칠기가 같다고 느끼는 샘플들끼리 그룹핑하는 실험이었다. 이 실험 결과의 분석에서는 그룹핑된 그룹의 개수에 의하여 분석을 수행하였다. 그리고 마지막 실험에서는 각각 독립적으로 제시되는 샘플들을 만져보고, 그 샘플들의 거칠기 정도가 어떠한지 형용사 척도를 토대로 평가하는 실험이었다. 이상의 실험적 연구를 통하여, 요철의 깊이와 피치 모두 사용자들이 느끼는 거칠기의 정도에 유의한 영향을 주는 것을 알 수 있었으며 특히, 요철의 깊이와 거칠기의 상관관계가 피치와 거칠기의 상관관계보다 훨씬 강한 것을 알 수 있었다. 즉, 사용자들은 요철의 깊이 변화에 대해 거칠기의 정도 차이를 더 많이 느낀다는 것을 알 수 있었다. 본 연구의 결과는 촉각을 이용한 사용자 인터페이스 디자인에서 촉각에 의한 식별력을 높이기 위하여 반드시 고려되어야 할 것이고, 그러한 사용자 특성이 반영될 때 제품의 사용 편의성은 더욱 증대될 수 있을 것이다.

• 가정과삶의질연구
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• 제15권2호
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• pp.45-58
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• 1997

In the traditional rural community social relationships among the people are the routes of resources. But as industrialization goes on rural community has changed. I wonder that rural housewives have yet the traditional social network structure. This stud purposed to analyze the structure of social network resource exchange and perception of community resources. Results were as follows: 1. In the rural housewife's social network structure network range and depth were affected by family income age of the youngest and farming time. Network boundary was affected by near environmental variables such as community resources and community level of living. 2. Community resources was the most influential variable in the resource exchanged 3. Perception of community resources was affected by network depth and was not by the resource exchange.

• 제어로봇시스템학회논문지
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• 제15권5호
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• pp.519-524
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• 2009

This paper describes a new sensor system for 3D environment perception using stereo structured infrared light sources and a camera. Environment and obstacle sensing is the key issue for mobile robot localization and navigation. Laser scanners and infrared scanners cover $180^{\circ}$ and are accurate but too expensive. Those sensors use rotating light beams so that the range measurements are constrained on a plane. 3D measurements are much more useful in many ways for obstacle detection, map building and localization. Stereo vision is very common way of getting the depth information of 3D environment. However, it requires that the correspondence should be clearly identified and it also heavily depends on the light condition of the environment. Instead of using stereo camera, monocular camera and two projected infrared light sources are used in order to reduce the effects of the ambient light while getting 3D depth map. Modeling of the projected light pattern enabled precise estimation of the range. Two successive captures of the image with left and right infrared light projection provide several benefits, which include wider area of depth measurement, higher spatial resolution and the visibility perception.

• 한국멀티미디어학회논문지
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• 제18권1호
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• pp.88-96
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• 2015

The recent increase in the production of 3D contents allowed viewers to experience various 3D contents. However, some of the viewers did not experience 3D depth well. Several researches were done in past to measure viewers' 3D depth perception, but these researches were done with certain limitations. In this paper, we measured viewers' 3D depth perception and recovery rate in relation with the changes in binocular disparities, saturation, and brightness values after subjects' watching 2D/3D contents. The results showed that when viewers watched the 3D content with positive binocular disparities for 42 minutes, viewers felt that the object seemed to have moved further forward than it was before; with 3D content with negative binocular disparities, viewers felt that the object seemed to be moved backwards. We found that the locational differences of the object in positive disparities were greater than those in the negative binocular disparities. The recovery rate was computed by comparing two measured values of before and after watching 3D contents for 30 minutes. On average, after 30-minute break, viewers showed roughly 50 % of recovery rate.

• 방송공학회논문지
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• 제17권2호
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• pp.400-410
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• 2012

최근 3D 영화를 시작으로 TV, 휴대전화, PC 게임 등 다양한 분야에서 3D 영상을 접할 수 있다. 3D 영상은 기존의 2D 영상에서 볼 수 없었던 깊이감이라는 새로운 정보를 제공하여 영상의 실감을 극대화 할 수 있지만, 시각피로 혹은 영상의 왜곡과 같은 단점도 가지고 있다. 본 연구는 3D 디스플레이에서 대상의 깊이에 따라 달라지는 크기지각의 예측함수를 개발하였다. 실험 1에서 참가자들은 물리적으로 고정된 크기의 3D 사각형을 관찰하면서, 그 크기와 동일하게 2D 사각형의 크기를 조절하는 과제를 수행하였다. 반대로, 실험 2에서 참가자들은 물리적으로 고정된 크기의 2D 사각형을 관찰하면서, 3D 사각형의 크기를 조절하는 과제를 수행하였다. 실험 1과 2에서 모두 3D 사각형의 깊이에 따라 크기지각이 선형적으로 변화함을 관찰하였으며, 두 실험에서 획득한 깊이와 크기지각의 선형함수는 동일하였다. 본 연구에서 획득한 예측함수는 깊이에 따라 대상의 크기가 어떻게 지각되는지를 미리 예측할 수 있으므로 3D 영상제작에서 매우 유용할 것이다.

• IEIE Transactions on Smart Processing and Computing
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• 제2권5호
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• pp.255-265
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• 2013

3DTV is expected to be a promising next-generation broadcasting service. On the other hand, the visual discomfort/fatigue problems caused by viewing 3D videos have become an important issue. This paper proposes a perceptual quality assessment metric for a stereoscopic video (SV-PQAM). To model the SV-PQAM, this paper presents the following features: temporal variance, disparity variation in intra-frames, disparity variation in inter-frames and disparity distribution of frame boundary areas, which affect the human perception of depth and visual discomfort for stereoscopic views. The four features were combined into the SV-PQAM, which then becomes a no-reference stereoscopic video quality perception model, as an objective quality assessment metric. The proposed SV-PQAM does not require a depth map but instead uses the disparity information by a simple estimation. The model parameters were estimated based on linear regression from the mean score opinion values obtained from the subjective perception quality assessments. The experimental results showed that the proposed SV-PQAM exhibits high consistency with subjective perception quality assessment results in terms of the Pearson correlation coefficient value of 0.808, and the prediction performance exhibited good consistency with a zero outlier ratio value.

• 한국환경교육학회지:환경교육
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• 제23권4호
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• pp.112-123
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• 2010

The purpose of this study is to investigate the elementary school teachers' perception about the aquatic ecosystem restoration and confirm their ideas about factors for successful restoration and the effective direction of education for the aquatic ecosystem restoration. In order to analyze teachers' thoughts about the aquatic ecosystem restoration, in-depth interview was conducted to three elementary school teachers. Then, answers of them were transcribed and analyzed by similarities and differences among subjects. The results are as follows. Elementary school teachers thought about aquatic ecosystem restoration was divided into rehabilitation and remediation. They recognized that factors for successful restoration are the restoration to natural conditions, providing persistent benefit to local residents, and the participation of local community in the process of restoration. Teachers think that they must have correct knowledge and perception regarding the aquatic ecosystem restoration. They also think that contents about the aquatic ecosystem restoration should be taught in elementary school. They mention that they may leach students about the aquatic ecosystem restoration in discretionary activities class and extracurricular activities class. They also mention that the education for aquatic ecosystem restoration might be handled within diverse subjects.