• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.3
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• pp.97-124
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• 2012

This paper analyzes qualitatively the stereo 3D content factors causing viewer's discomfort. For this, we perform a subjective test that each subject strokes a specific key whenever he (she) feels discomfort during watching a stereo 3D contents. Also we extract the data for the factors in the 3D contents to obtain their quantitative values and the amounts of the temporal changes. Those two sets of data are used to analyze the contents to find the factors which cause viewer's discomfort. The factors to be considered are the amount and the frequency of the disparity changes, story of the contents, situation or environments of a scene, movement and the position of the camera, color and luminance information as well as disparities themselves. We analyse the various strong and weak factors and their composites to find how much discomfort each factor or composite causes. We also show the situations and their related factors that causes less discomfort than the amount of their disparities.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.2
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• pp.19-24
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• 2019

Digital technologies in the digital image field are developing and changing rapidly while creating various forms of media environments. In particular, broadcasting image-processing technologies provide more realistic images through the development of multimedia technology. Consequently, the needs of flat image quality have been nearly met, leading to technological saturation. Currently, flat images possess the advantages of popularity and freedom from visual fatigue over three-dimensional stereoscopic images. A complementary technology for flat images is the stereoscopic perception improvement technology. To examine correlations between stereoscopic perception and colour attributes for graphic images on flat displays, we have conducted experiments related to stereoscopic perception and analysed the results. In these experiments, the colour attributes of hue, value, and chroma were applied at different levels. Next, the factors that provide the highest stereoscopic perception and their interactions were analysed through analysis of variance. Finally, this study defines the significance of colour factors related to stereoscopic perception by analysing the experimental results, and proposes a colour adjustment method for improved stereoscopic perception in graphics image processing.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.07a
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• pp.381-384
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• 2011

DMB 와 같은 모바일 기기에서 3 차원 입체 영상 서비스를 제공하기 위해서는 스테레오스코픽 콘텐츠를 생성하는 단계에서 모바일 기기의 특성, 즉 3D 디스플레이의 특성을 고려하여 촬영하거나 또는 가공하여야 한다. 본 논문에서는 일반적으로 HD 급 고해상도로 촬영된 스테레오스코픽 3 차원 콘텐츠를 모바일 환경에 적합하도록 크기를 변환하기 위한 알고리즘 및 그에 따라 변환된 모바일 3 차원 영상의 분석 결과를 제시하고자 한다.

• Journal of the Optical Society of Korea
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• v.20 no.5
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• pp.633-640
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• 2016

In a dual lens stereoscopic camera, a convergence point determines the stereopsis effects of a video. When a user zooms an object, a convergence point is fixed since it is not coupled with a zoom function. Due to the fixed convergence point, it is possible for a zoom to cause the excessive binocular disparity resulting in visual discomfort. In this paper, to solve this problem, we build the relational model including all phenomena possible to arise and propose the adjustment methods of a convergence point by the positions of a focus, an object and a convergence point. We also evaluate the experiments measuring a binocular disparity and the subjective test to investigate the visual comfort. The results show that one of the proposed methods produced more comfortable 3D images to viewers than the others.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.2
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• pp.133-140
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• 2014

3D stereoscopic display is becoming increasingly common. Most stereoscopic displays still require the viewers to wear 3D glasses to watch 3D contents. As it is widely known, especially in shutter glass method, 3D glasses normally cause to reduce the perceived colorfulness and sharpness considerably as well as brightness. In this paper, we have estimated and analyzed the degradation of perceptual brightness in 3D images viewed through the shutter glasses by using CIECAM02 model. This study focuses on loss of colorfulness and sharpness when PDP-TV is watched at 3D mode in shutter-glass type 3D-TV. We analyze perceptual colorfulness and sharpness of 3D display with glasses and propose a method to compensate 3D colorfulness and sharpness for the best 3D experience.

• Proceedings of the Korea Contents Association Conference
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• 2010.05a
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• pp.511-513
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• 2010

최근 국내에서 디지털 영상 매체 연구개발 분야 중 관심을 끌고 있는 분야가 바로 3D 입체영상 구현에 관한 분야이다. 특히 모바일 3D 영상 구현에 대한 연구는 시스템이 점차 디지털로 전환되면서 빠른 속도로 진보하고 있다. 하지만 그 개발방향은 현재 구현되는 영상매체와 기술에 대한 하드웨어적인 접근에만 집중되어 있다. 즉, 수용자의 태도와 인식과 같은 기술 외적인 부분에 대한 연구는 상대적으로 활발하게 이루어지지 못하고 있다. 이에 본 연구는 사용자 중심의 모바일 입체영상콘텐츠 개발의 소프트웨어적 특성과 입체영상에 대한 수용자의 태도를 분석함으로써 앞으로 미래의 모바일영상콘텐츠 개발방안에 대한 로드맵을 그려보고자 할 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.664-667
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• 2010

3D 입체영상의 후반작업에서 색보정은 전체의 화질에 영향을 미치는 중요한 과정이다. 기존의 색보정 방법들은 좌, 우영상 중에서 히스토그램을 바탕으로하여 어느 한쪽을 기준으로 일치성을 강화하는 처리를 한다. 히스토그램을 기반으로 색보정을 하는 경우, 충분한 색온도 변환이 이루어 지지 않는 단점이 있으며, 본 논문에서는 히스토그램을 사용하지 않고 색온도 변환을 중심으로 색보정하는 방법을 제안한다.

• Journal of Digital Contents Society
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• v.18 no.1
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• pp.123-132
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• 2017

The physical display technology is the ultimate display technology that human beings aspire, and the world makes use of laser, plasma and reflector plate. Besides, technology development of binocular stereoscopic display has been actively progressed, but there is a limitation to the intact physical representation such as influence of optical ambient light and brightness. In this paper, the display technology using physical deformation different from the existing optical display is approached as a cultural and emotional perspective. The purpose of this paper is to develop the multivariate display technology that can create 3D realistic stereoscopic images through projecting dynamic images on physically diversified screen by overcoming the limitations of 2D planar digital signage and study how to apply them to video, exhibition and performance.

• Journal of Korea Game Society
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• v.11 no.5
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• pp.13-22
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• 2011

Advances in display technology, stereoscopic (S3D) in the development of social interest in the content development approach is high but it does not make the standardization of interactive 3D content creation performance is very poor. In this paper, real-time video input from an infrared camera that is based on eye tracking implementation user interface developed 3D interactive adventure game "HowSee" was the process of developing skills in the process, an efficient 3D content production methods were presented. unnormalized S3D-based game content production process on how this development occurred in the trial and how to troubleshoot S3D games, etc. to streamline content creation can be a basis for.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08b
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• pp.1486-1489
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• 2007

Generally many kind of phase unwrapping method are used to obtain three-dimensional feature in digital holography. Goldstein algorithm is representative method. But Goldstein algorithm has some problems. We developed a modified Goldstein algorithm that could solve the problem of Goldstein algorithm using the boundary information. Obtained three-dimensional information can be applied to 3-D contents of stereoscopic, multi-view, SMV, or holographic display.