• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.171-174
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• 2003

This paper is a study on the 3D infrared image enhancement with Stereoscopic algorithm on still infrared image. The adapted stereo method is that the depth is extracted by comparison with right-left image, and the enhanced 3D infrared image by matching based on feature is realized. As the result of experiment this method forced the more smooth edge lines of 3D infrared images.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2010.07a
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• pp.267-269
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• 2010

3D 모니터의 공급으로 IT영역 및 의료영상 분야 에서도 3D 영상에 관한 산업 발달이 화두가 되고 있다. 의료영상은 CT, MRI 영상의 정확한 판독이 필요하기 때에 2D 의료영상보다 구체적인 3D 정보를 얻을 수 있는 3D 입체영상에 관심이 높아지고 있다. 본 논문에서는 3D 의료 촬영기계가 아닌 기존의 2D 의료 평면 영상 한 장만을 이용한 3D 입체영상을 제작하는 방법을 제안한다. 실험 영상으로 CT의 2D 의료영상을 사용한다. 장기의 영역 분할을 한후, 각 장기 성분을 분석한다. 분리 한 장기들은 명암값에 의해 구분 되며, 이를 바탕으로 영상의 깊이 정보를 추출한다. 추출한 정보로 깊이맵을 작성한다. 작성된 깊이 맵과 기본 2D 의료영상과 합성, 깊이를 할당하여 3D영상을 구현한다.

• Proceedings of the Optical Society of Korea Conference
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• 2003.07a
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• pp.118-119
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• 2003

조명각 변조방식에 의한 3차원 디스플레이 모듈의 구성요소는 back light unit(BLU), stripe-patterned LC shutter, lenticular lens sheet이다. 이런 3차원 디스플레이 에서 조명각도의 올바른 변조를 위해서는 stripe-patterned LC shutter, lenticular lens sheet 상호 결합이 가장 중요하다. 그림 1 은 이러한 입체영상 module의 개념도이다. 그림과 같이 LC shutter위에 적절한 렌티큘러 렌즈 어레이를 설치할 때, 줄무늬 모양의 면 광원에서 방출된 빛이 한번은 정확히 오른쪽 눈으로 다음 번에는 왼쪽 눈으로 향하게 하여 양안 시차에 의해 3D영상이 보이도록 하는 것이 이 모듈의 핵심원리이다. (중략)

• The Journal of the Korea Contents Association
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• v.9 no.5
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• pp.13-23
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• 2009

One of the main purpose of multiple-view image processing technology is support realistic 3D image to device user by using multiple viewpoint display devices and compressed data restoration devices. This paper proposes a multiple view image synthesis scheme based on RAM disk which makes possible to browse 3D images generated by applying effective composing method to real time input stereo images. The proposed scheme first converts input images to binary image. We applies edge detection algorithm such as Sobel algorithm and Prewiit algorithm to find edges used to evaluate disparities from images of 4 multi-cameras. In addition, we make use of time interval between hardware trigger and software trigger to solve the synchronization problem which has stated ambiguously in related studies. We use a unique identifier on each snapshot of images for distributed environment. With respect of performance results, the proposed scheme takes 0.67 sec in each binary array. to transfer entire images which contains left and right side with disparity information for high quality 3D image browsing. We conclude that the proposed scheme is suitable for real time 3D applications.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.42 no.3 s.303
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• pp.41-50
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• 2005

A novel image mosaicking technique suitable for 3D urban visualization is proposed. It is not effective to apply 2D image mosaicking techniques for urban visualization when, for example, one is filming a sequence of images from a side-looking video camera along a road in an urban area. The proposed method presents the roadside scene captured by a side-looking video camera as a continuous set of textured planar faces, which are termed 'multiple planes' in this paper. The exterior parameters of each frame are first calculated through automatically selected matching feature points. The matching feature points are also used to estimate a plane approximation of the scene geometry for each frame. These planes are concatenated to create an approximate model on which images are back-projected as textures. Here, we demonstrate algorithm that creates efficient image mosaics in 3D space from a sequence of real images.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.43 no.1 s.307
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• pp.45-52
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• 2006

In this paper, a real-time stereoscopic image conversion method using a single frame from a 2-D image is proposed. The Stereoscopic image is generated by creating depth map using vortical position information and parallax processing. For a real-time processing of stereoscopic conversion and reduction of hardware complexity, it uses image sampling, object segmentation by standardizing luminance and depth map generation by boundary scan. The proposed method offers realistic 3-D effect regardless of the direction, velocity and scene conversion of the 2-D image. It offers effective stereoscopic conversion using images suitable conditions assumed in this paper such as recorded image at long distance, landscape and panorama photo because it creates different depth sense using vertical position information from a single frame. The proposed method can be applied to still image because it uses a single frame from a 2-D image. The proposed method has been evaluated using visual test and APD for comparing the stereoscopic image of the proposed method with that of MTD. It is confirmed that stereoscopic images conversed by the proposed method offers 3-D effect regardless of the direction and velocity of the 2-D image.

• Information and Communications Magazine
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• v.28 no.6
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• pp.47-53
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• 2011

3차원 실감 방송은 현실 세계의 일들을 가상의 환경 속에서 체험할 수 있게 하는 차세대 방송 기술이다. 최근 다시점 카메라를 이용한 3차원 입체 영상에 대한 관심이 높아지면서, 3차원 영상의 획득 방법과 부호화 기술에 대한 연구가 활발히 진행되고 있다. 본 논문에서는 사용자에게 더 실감나는 장면을 제공하기 위한 3차원 실감 방송의 개념을 설명하고, 3차원 영상의 역사를 간략히 살펴본다. 특히, 최근 MPEG 표준화 그룹에서 진행되고 있는 3차원 비디오 부호화 기술을 소개하고, 향후 진행될 표준화 과정을 설명한다.

• The Journal of the Korea Contents Association
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• v.14 no.7
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• pp.1-9
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• 2014

Previous 2D-3D conversion methods to generate 3D stereo images from 2D sequence consist of labor-intensive procedures in their production pipelines. This paper presents an efficient 2D-3D conversion system based on scene structure reconstruction from image sequence. The proposed system reconstructs a scene space and produces 3D stereo images with texture re-projection. Experimental results show that the proposed method can generate precise 3D contents based on scene structure information. By using the proposed reconstruction tool, the stereographer can collaborate efficiently with workers in production pipeline for 3D contents production.

• Broadcasting and Media Magazine
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• v.15 no.2
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• pp.73-80
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• 2010

• Journal of Korean Electronics
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• v.25 no.10
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• pp.23-26
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• 2005