• Title/Summary/Keyword: mesh simplification

Search Result 53, Processing Time 0.015 seconds

Detailed-information Browsing Technology based on Level of Detail for 3D Cultural Asset Data (3D 문화재 데이터의 LOD 기반 상세정보 브라우징 기술)

  • Jung, Jung-Il;Cho, Jin-Soo;WhangBo, Tae-Keun
    • The Journal of the Korea Contents Association
    • /
    • v.9 no.10
    • /
    • pp.110-121
    • /
    • 2009
  • In this paper, we propose the new method that offer detailed-information through relax the system memory limitation about 3D model to user. That method based on making LOD(Level of Detail) model from huge 3D data of structure cultural assets. In our method as transformed AOSP algorithm, first of all it create the hierarchical structure space about 3D data, and create the LOD model by surface simplification. Then it extract the ROI(Region of Interest) of user in simplified LOD model, and then do rendering by original model and same surface detailed-information after process the local detailed in extracted region. To evaluate the proposed method, we have some experiment by using the precise 3D scan data of structure cultural assets. Our method can offer the detailed-information same as exist method, and moreover 45% reduced consumption of memory experimentally by forming mesh structure same as ROI of simplified LOD model. So we can check the huge structure cultural assets particularly in general computer environment.

An Acceleration Technique of Terrain Rendering using GPU-based Chunk LOD (GPU 기반의 묶음 LOD 기법을 이용한 지형 렌더링의 가속화 기법)

  • Kim, Tae-Gwon;Lee, Eun-Seok;Shin, Byeong-Seok
    • Journal of Korea Multimedia Society
    • /
    • v.17 no.1
    • /
    • pp.69-76
    • /
    • 2014
  • It is hard to represent massive terrain data in real-time even using recent graphics hardware. In order to process massive terrain data, mesh simplification method such as continuous Level-of-Detail is commonly used. However, existing GPU-based methods using quad-tree structure such as geometry splitting, produce lots of vertices to traverse the quad-tree and retransmit those vertices back to the GPU in each tree traversal. Also they have disadvantage of increase of tree size since they construct the tree structure using texture. To solve the problem, we proposed GPU-base chunked LOD technique for real-time terrain rendering. We restrict depth of tree search and generate chunks with tessellator in GPU. By using our method, we can efficiently render the terrain by generating the chunks on GPU and reduce the computing time for tree traversal.

Morphable Model to Interpolate Difference between Number of Pixels and Number of Vertices (픽셀 수와 정점들 간의 차이를 보완하는 Morphable 모델)

  • Ko, Bang-Hyun;Moon, Hyeon-Joon;Kim, Yong-Guk;Moon, Seung-Bin;Lee, Jong-Weon
    • The Journal of the Korea Contents Association
    • /
    • v.7 no.3
    • /
    • pp.1-8
    • /
    • 2007
  • The images, which were acquired from various systems such as CCTV and Robot, include many human faces. Because of a rapid increase in visual data, we cannot process these manually; rather we need to do these automatically. Furthermore, companies require automatic security systems to protect their new technology. There are various options available to us, including face recognition, iris recognition and fingerprint recognition. Face recognition is preferable since it does not require direct contact. However, the standard 2-Dimensional method is limited, so Morphable Models may be recommended as an alternative. The original morphable model, made by MPI, contains a large quantity of data such as texture and geometry data. This paper presents a Geometrix-based morphable model designed to reduce this data capacity.