• Korea Multimedia Society
• /
• v.6 no.3
• /
• pp.5-24
• /
• 2002

• Journal of the Korea Computer Graphics Society
• /
• v.20 no.2
• /
• pp.13-24
• /
• 2014

In this study, a graphics-processing-unit (GPU)-based acceleration technique is proposed for the feature-based image morphing. This technique uses the depth-buffer of the graphics hardware to calculate efficiently the shortest distance between a pixel and the control lines. The pairs of control lines between the source image and the destination image are determined by user's input, and the distance function of each control line is rendered using two rectangles and two cones. The distance between each pixel and its nearest control line is stored in the depth buffer through the graphics pipeline, and this is used to conduct the morphing operation efficiently. The pixel-unit morphing operation is parallelized using the compute unified device architecture (CUDA) to reduce the morphing time. We demonstrate the efficiency of the proposed technique using several experimental results.

• Korea Information Processing Society Review
• /
• v.15 no.3
• /
• pp.21-30
• /
• 2008

• Communications of the Korean Institute of Information Scientists and Engineers
• /
• v.32 no.8
• /
• pp.32-39
• /
• 2014

• Journal of the Korean Professional Engineers Association
• /
• v.27 no.6
• /
• pp.33-38
• /
• 1994

• Communications of the Korean Institute of Information Scientists and Engineers
• /
• v.26 no.6
• /
• pp.5-10
• /
• 2008

• Communications of the Korean Institute of Information Scientists and Engineers
• /
• v.17 no.12
• /
• pp.43-45
• /
• 1999

• Communications of the Korean Institute of Information Scientists and Engineers
• /
• v.24 no.12 s.211
• /
• pp.63-71
• /
• 2006

• Digital Contents
• /
• no.9 s.148
• /
• pp.20-22
• /
• 2005

가상현실 분야에서 세계적인 기술력을 인정받고 있는 독일 프라운호퍼 IGD(Institute for Computer Graphics)의 한국 R&D센터 인 그래픽스연구원(IGI). IGI는 정보통신부와 독일 프라운호퍼 IGD, 이화여대가 공동으로 지난해 5월 설립한 국제공동연구기관(재단법인)이다. 의료 영상 처리 및 3차원 구성·원격 진료 시스템·영상 융합 프로젝트 등의 응용 개발 기술을 보유하고 있는 IGI는 IGD가 보유하고 있는 선진 컴퓨터 그래픽스 기술의 국내 도입을 뛰어 넘어 국내 VR(Virtual Reality) 기술력을 선진국 수준으로 끌어올리는데 견인차역할을하기위해국경을초월한연구원들이연구개발에한창이다.

• Journal of the Korea Computer Graphics Society
• /
• v.18 no.4
• /
• pp.25-34
• /
• 2012

This paper presents a real-time GPU (graphics processing unit) ray casting scheme for rendering isosurfaces of BCC (body-centered cubic) volume datasets. A quartic spline field is built using the 7-direction box-spline filter accompanied with a quasi-interpolation prefilter. To obtain an interactive rendering speed on the graphics hardware, the shader code was optimized to avoid lookup table and conditional branches and to minimize data fetch overhead. Compared to previous implementations, our work outperforms the comparable one by more than 20% and the rendering quality is superior than others.