• Title/Summary/Keyword: stereoscopic image

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A Fast Vision-based Head Tracking Method for Interactive Stereoscopic Viewing

  • Putpuek, Narongsak;Chotikakamthorn, Nopporn
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.1102-1105
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    • 2004
  • In this paper, the problem of a viewer's head tracking in a desktop-based interactive stereoscopic display system is considered. A fast and low-cost approach to the problem is important for such a computing environment. The system under consideration utilizes a shuttle glass for stereoscopic display. The proposed method makes use of an image taken from a single low-cost video camera. By using a simple feature extraction algorithm, the obtained points corresponding to the image of the user-worn shuttle glass are used to estimate the glass center, its local 'yaw' angle, as measured with respect to the glass center, and its global 'yaw' angle as measured with respect to the camera location. With these estimations, the stereoscopic image synthetic program utilizes those values to interactively adjust the two-view stereoscopic image pair as displayed on a computer screen. The adjustment is carried out such that the so-obtained stereoscopic picture, when viewed from a current user position, provides a close-to-real perspective and depth perception. However, because the algorithm and device used are designed for fast computation, the estimation is typically not precise enough to provide a flicker-free interactive viewing. An error concealment method is thus proposed to alleviate the problem. This concealment method should be sufficient for applications that do not require a high degree of visual realism and interaction.

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Correlations between Stereoscopic Perception and Colour Attributes in Graphic Images (그래픽 영상에서 입체감과 색채 속성의 연관성 관련 연구)

  • Hong, Ji-Young
    • 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.

Stereoscopic Conversion of fame Images Based on Characteristics of Color Models (컬러 모델의 특성 기반 화염 영상의 입체 변환 기법)

  • Jeong, Da-Un;Choi, Ji-Eun;Jo, Cheol-Yong;Kim, Je-Doong;Gil, Jong-In;Kim, Man-Bae
    • Proceedings of the IEEK Conference
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    • 2009.05a
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    • pp.25-27
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    • 2009
  • This paper presents the stereoscopic conversion of flame images. The stereoscopic conversion is a technology that generates left and right images from a monoscopic image. Even though many conversion methods have been introduced and commercialized so far, the processing of flame images is relatively few. Such conventional methods are effectively used either real-time or off-line. However, the application of such schemes to special-effect images such as flame is hard to be applied. The proposed method is designed to convert a flame image into a stereoscopic image. Depth map of flame regions are produced based on the analysis of color models of flames. Experimental results tested on diverse flame image sets validates the effectiveness of the proposed method.

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Stereoscopic Image Conversion Algorithm using Object Segmentation and Motion Parallax (객체 분할과 운동 시차를 이용한 입체 영상 변환 알고리즘)

  • Jung, Jae-Sung;Cho, Hwa-Hyun;Yoon, Jong-Ho;Choi, Myung-Ryul
    • Proceedings of the IEEK Conference
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    • 2005.11a
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    • pp.1129-1132
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    • 2005
  • In this paper, we proposed real-time stereoscopic image conversion algorithm using object segmentation and motion parallax. The proposed algorithm separates objects using luminance of image, extracts moving object among objects of the image using motion parallax and generates depth map. Parallax process is done based on the depth map. The proposed method has been evaluated using visual test and APD(Absolute Parallx Difference) for comparing the stereoscopic image of the proposed method with that of MTD. The proposed method offers realistic stereoscopic conversion effect regardless of the direction and velocity of the 2-D image.

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Depth Scaling Method of DirectX-based Stereoscopic Game Image (DirectX 기반 입체 게임 영상의 깊이감 조절 기법)

  • Kim, Jin-Mo;Cho, Hyung-Je
    • Journal of Korea Game Society
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    • v.10 no.1
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    • pp.135-146
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    • 2010
  • The development of image technologies in such area as broadcasting and movies has recently increased our attention to 3D stereoscopic images. In addition, the development of stereoscopic image representation technologies in 3D contents becomes more active over time due to the representational limitations of 2D images. Without limitation to the above-mentioned area, stereoscopic image technologies have been developed and studied so that they can be widely accessed in diverse areas including medical services and education. Due to the refined production, however, required to represent a three dimensional effects and the fatigue caused by the perception of a three dimensional effects, the stereoscopic image technologies are not combined into real time systems such as games where environments change unforeseeably. In this study we design a technique to adjust the depth scaling that will enable efficient management of a three dimensional effects and to relieve fatigue through automatic view point interval adjustment in accordance with situations based on the geometrical structure of the DirectX SDK graphic pipeline. Through this, we would like to suggest a new alternative idea to activate the production of games combined with stereoscopic image technologies.

Development of a Stereoscopic Miniature PIV(MPIV) System (Stereoscopic Miniature PIV (MPIV) 시스템의 개발)

  • Kim S.H.;Chete1at O.;Kim K.C.
    • Proceedings of the KSME Conference
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    • 2002.08a
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    • pp.517-520
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    • 2002
  • Stereoscopic particle image velocimetry is a measurement technique to acquire of three dimensional velocity field by two cameras. With a laser sheet illumination, the third velocity component can be deduced by out-of-plane velocity components using a stereoscopic matching method. Industrial fluid flows are almost three dimensional turbulent flows, so it is necessary to use the stereoscopic PIV measurement method. However the existing stereoscopic PIV system seems hard to use since it is very expensive and complex. In this study we have developed a Stereoscopic Miniature PIV(MPIV) system based on the concept of the Miniature PIV system which we have already developed. In this paper, we address the design and some first experimental results of the stereoscopic PIV system. The Stereoscopic MPIV system features relatively modest performances, but is considerably smaller, cheaper and easy to handle. The proposed Stereoscopic MPIV system uses two one-chip-only CMOS cameras with digital output. Only two other chips are needed, one for a buffer memory and one for an interfacing logic that controls the system. Images are transferred to a personal computer (PC) via its standard parallel port. No extra hardware is required (in particular, no frame grabber board is needed).

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A Robot Control System Using Stereoscopic Image (입체영상을 이용한 로봇 제어시스템)

  • Ko, Jun Ho;Yang, Jae Seok;Kim, Yoon Sang
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.5 no.3
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    • pp.135-140
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    • 2009
  • In this paper, a robot control system with stereoscopic Image was presented. The robot control system has an auto-focusing functionality which measures the distance between robot and object using an infrared sensor. By providing depth and information based on the stereoscopic image, it allows user to have presence and immersion as if he(she) be there. the proposed robot control system's propriety was examined through the comparison experiment with the mono-scopic image.

Vergence Control of Binocular Stereoscopic Camera Using Disparity Information

  • Kwon, Ki-Chul;Lim, Young-Tae;Kim, Nam;Song, Young-Jun;Choi, Young-Soo
    • Journal of the Optical Society of Korea
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    • v.13 no.3
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    • pp.379-385
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    • 2009
  • The vergence control of binocular stereoscopic camera is the most essential factor for acquiring high quality stereoscopic images. In this paper, we proposed a binocular stereoscopic camera vergence control method using disparity information by the simple image processing and estimate the quantity of vergence control using the Lagrange interpolation equation. The method of extracting disparity information through image processing is as follows: first the key-object in left & right images was extracted through labeling of the central area of the image, and then a simple method was used for calculating the disparity value of the same key-object in the labeled left and right images. The vergence control method uses disparity information and keeps the convergence distance of left & right cameras and the distance of the key-object the same. According to the proposed method, variance in the distance of the key-object and application of calculated disparity information of obtained left & right images to the quadratic Lagrange interpolation equation could estimate the quantity of vergence control, which confirmed that the method of stereoscopic camera vergence control can be simplified through experiments on various key-objects and other convergence distance.

Realtime 3D Stereoscopic Image based on Single Camera with Marker Recognition (마커 인식을 이용한 싱글카메라 기반의 실시간 3D 입체영상)

  • Hyun, Hye-Jung;Park, Jun-Hyoung;Ko, Il-Ju
    • The Journal of the Korea Contents Association
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    • v.11 no.1
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    • pp.92-101
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    • 2011
  • However, in order to create a stereoscopic 3D image, independently, it is required to spend expensive manufacturing costs and to have special techniques. As 3D display devices have been generalized, there is an increasing need for implementing a stereoscopic 3D image without a burden of expensive costs. This paper proposes some methods to implement stereoscopic 3D images easily by utilizing a marker tracking technology using a single camera. In addition, the study made it possible for the resolution of an image to be adjustable dynamically. This paper will be committed to the promotion of the field of UCC (User Created Contents) using stereoscopic 3D images by attracting the active participation of general users in the field of the implementation of stereoscopic 3D images.

Stereoscopic conversion of 2D Image using Shot Information (촬영 샷 정보를 활용한 2차원 영상의 입체 변환)

  • Kim, Je-Dong;Gui, Yi-Qi;Choi, Hwang-Kyu;Cho, Beong-Chul;Kim, Man-Bae
    • Proceedings of the IEEK Conference
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    • 2009.05a
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    • pp.219-221
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    • 2009
  • In this paper, we present stereoscopic conversion based on movie shot information. To overcome the low stereoscopic quality of automatic stereo conversion technologies, the usage of the shot type is expected to provide more satisfactory stereoscopic perception. In general, movie clips are produced with a variety of shot techniques such as long shot, closeup shot, medium shot, etc. Each shot has its own characteristics that can be utilized during the conversion process. Furthermore, description sceme for shot and camera information is presented in XML. XML shot editor generates XML shot data. and conversion module parses such data and converts 2D image into stereoscopic image.

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