SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Surface simplification using quadric error metrics
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Hierarchical geometric models for visible surface algorithms
Communications of the ACM
HLODs for faster display of large static and dynamic environments
I3D '01 Proceedings of the 2001 symposium on Interactive 3D graphics
GigaWalk: interactive walkthrough of complex environments
EGRW '02 Proceedings of the 13th Eurographics workshop on Rendering
Level of Detail for 3D Graphics
Level of Detail for 3D Graphics
Exploring a Boeing 777: Ray Tracing Large-Scale CAD Data
IEEE Computer Graphics and Applications
Interactive View-Dependent Rendering over Networks
IEEE Transactions on Visualization and Computer Graphics
Advances in collaborative CAD: the-state-of-the art
Computer-Aided Design
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Design review plays an important role in verifying design standards and ensuring or shortening the design cycle of the project in collaborative process plant CAD. Visualization of 3D process plant models is an essential feature to support design review in distributed design environment. To improve rendering performance, model simplification algorithms, such as levels of detail (LODs) and hierarchical levels of detail (HLODs), can be applied to process plant models. However, it is difficult to use available general model simplification algorithms to support reviewing complex models in process plant CAD. These algorithms always need unbearable time for preprocessing and are not designed to handle process plant models. They do not take the specific requirements of design review into account and may distort design feature and make them unrecognizable to the reviewer. To efficiently transmit models, various compression technologies can be applied to shrink the data size. However, transmitting the geometric model over the network during visualization is still a bottleneck of rendering performance. In this paper, a new, faster model simplification algorithm is proposed to simplify process plant models. Only the geometric parameters and topology information are transmitted. We compute LODs and HLODs according to the model's geometric parameters and design feature. We demonstrate its performance on complex process plant models composed of tens of millions of triangles. Overall, our approach is able to greatly shorten the preprocessing time and achieve considerable speedups in frame rate with little loss in image quality.