The Fast Display Method for 3DCM Based on the Viewpoint Moving in Cluster Environment

doi:10.13474/j.cnki.11-2246.2017.0319

Abstract

Abstract: With the rapid development of digital city construction, as the core content of digital city,3DCM has the characteristics of large amount of data, slow running speed, great calculation pressure and so on in the existing computer's running environment.To solve these problems, combined with the parallel computing, a new fast display method for 3DCM based on the viewpoint move rules is proposed.Using static LOD simplification algorithm to simplify the 3DCM to four resolution level.Based on the viewpoint move rules, the LOD model was selected and gradual loading according to the distance and the eccentricity ratio.The results were parallel displaying in the cluster system, which effectively solves the problems of slow load display and scene jumping for large-scale 3DCM,achieved the fast display of large scale 3DCM.Experimental results show that this method can quickly and effectively deal with large-scale 3DCM rendering, while taking into account the efficiency and showing the details of the model, has a good visual effect, which has important significance for the development of digital city.

Key words: cluster environment, viewpoint moving, 3DCM, fast display

CLC Number:

P208

LI Chaokui, FANG Jun, FANG Wen, BU Pu. The Fast Display Method for 3DCM Based on the Viewpoint Moving in Cluster Environment[J]. 测绘通报, 2017, 0(10): 74-78.

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