A Dynamic Method for Generating Multi-Resolution TIN Models

Wang, Jinhu; Shi, Wenzhong; Li, Qingquan

doi:10.14358/pers.71.8.917

Cited by 9 publications

(1 citation statement)

References 25 publications

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“…Garland and Heckbert [5] used quadric error metrics and, based on this, developed QSlim software. Yang et al [6] propose a new method which extends the full-edge collapse and vertex split algorithms, to dynamically generate multi-resolution TIN models. However, these algorithms and methods have difficulties in well preserving terrain features at a low resolution terrain model.…”

Section: Previous Workmentioning

confidence: 99%

Multi-resolution representation of digital terrain models with terrain features preservation

Wang

2008

Sci. China Ser. E-Technol. Sci.

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multi-resolution TIN model is an important issue in the contexts of visualization, virtual reality (VR), and geographic information systems (GIS). This paper proposes a new method for constructing multi-resolution TIN models with multiscale topographic features preservation. The proposed method is driven by a halfedge collapse operation in a greedy framework and employs a new quadric error metric to efficiently measure geometric errors. We define topographic features in a multi-scale manner using a center-surround operator on Gaussian-weighted mean curvatures.Experimental results demonstrate that the proposed method performs better than previous methods in terms of topographic features preservation, and is able to achieve multi-resolution TIN models with a higher accuracy. digital terrain models, level of detail, differential-geometry, quadric error metrics, topographic feature

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Section: Previous Workmentioning

confidence: 99%

Multi-resolution representation of digital terrain models with terrain features preservation

Wang

2008

Sci. China Ser. E-Technol. Sci.

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Visualization in virtual reality: a systematic review

Korkut

Sürer

2023

Virtual Reality

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A robust and rapid algorithm for generating and transmitting multi-resolution three-dimensional models

Wang

Gong

2006

CHINESE SCI BULL

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Recent advances in 3D spatial data capture, such as high resolution satellite images and laser scanning as well as corresponding data processing and modeling technologies, have led to the generation of large amounts of datasets on terrains, buildings, roads and other features. The rapid transmission and visualization of 3D models has become a 'bottleneck' of internet-based applications. This paper proposes a robust algorithm to generate multi-resolution models for rapid visualization and network transmission of 3D models. Experiments were undertaken to evaluate the performance of the proposed algorithm. Experimental results demonstrate that the proposed algorithm achieves good performance in terms of running speed, accuracy, encoding of multi-resolution models, and network transmission.Recent advances in 3D spatial data capture, such as high resolution satellite images and laser scanning, as well as corresponding data processing and modeling technologies have led to the generation of large amounts of datasets on terrains, buildings, roads and other features. On the one hand, the internet has become a popular platform for data sharing, data transmission, distributing computation, and visualization. However, the volume of data is far beyond the processing capabilities of current workstation and rapid network transmission (e.g. rapid 3D visualization, and rapid transmission). On the other hand, users have to wait a long time for data downloading from server side to client side after querying operation is invoked, and they can not implement any operations on the spatial data until the downloading is finished. It is also impossible for them to first access the data with a lower resolution data version, then to get a higher resolution data version until the whole data are downloaded. Investigation shows that most users have difficulty to accept such long waits. To solve this problem, one promising solution is to deliver the spatial datasets at increasing levels of detail (LoD) from the server to the client (a process called progressive transmission). The most important advantage of progressive transmission methods is that they are capable of giving users a rapid preliminary view of spatial data. Moreover, users can navigate through the data during the transmission procedure, e.g. through zooming, panning, spatial queries, and so on. Triangle-based 3D model begins to receive more attention because it has simple data structure and is easy to be rendered by common graphics cards. This paper proposes a rapid and robust algorithm to construct multi-resolution 3D models and to progressively transmit triangle based 3D data models over the internet. The algorithm has better performance in terms of the efficiency of generating multi-resolution 3D models, encoding and storage of 3D models, validity check of topological relationship, and features preservation and accuracy evaluation of multi-resolution 3D models. Previous workMulti-resolution models have been a focus of research in many areas such as the visualization of terrain ...

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A Dynamic Method for Generating Multi-Resolution TIN Models

Cited by 9 publications

References 25 publications

Multi-resolution representation of digital terrain models with terrain features preservation

Multi-resolution representation of digital terrain models with terrain features preservation

Visualization in virtual reality: a systematic review

A robust and rapid algorithm for generating and transmitting multi-resolution three-dimensional models

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