Real-Time Generation Technology of Vector Geological Profile Based on 3D Geological Model
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摘要: 为了解决目前剖面图生成的实时性、鲁棒性和准确性的问题，本研究提出从图像空间出发，利用双模板缓冲技术解决剖切问题的计算瓶颈，同时借助RTT（Render to Texture）相机技术和高分辨率技术实现任意直线切割下的剖面图高精度输出，最后将剖面图矢量化以获得带有属性的矢量图.实验证明，本研究提出的基于三维地质模型的矢量地质剖面图实时生成技术具有可实现性.通过与传统剖切对比，证明我们的方法在剖切效率上有高达99.9%的提升，实现了剖面图生成的实时性且输出的矢量剖面图地质界线一致且清晰.为地质行业进入三维化时代提供了一种基于三维地质模型的实时剖面图生成的新思路，对剖面图实时生成具有一定的参考意义.Abstract: In order to solve the problems of real-time, robustness and accuracy of the current profile generation, in this paper it proposes to solve the calculation bottleneck of the cutting problem from the perspective of image space by using the double stencil buffer technology. With the help of Render To Texture camera technology and high-resolution technology, the high-precision output of the profile under arbitrary route cutting is realized. Finally, the profile is vectorized to obtain the vector geological profile with attributes. Experiments show that the real-time generation technology of vector geological profile based on three-dimensional geological model is feasible. Compared with the traditional cutting, it is proved that our method has greatly improved the cutting efficiency, realizing the real-time generation of the profile and the exquisite and beautiful output of the vector profile. It provides a new idea for real-time profile generation based on three-dimensional geological model under the background of geological industry entering the era of three-dimensionalization, and achieves a multiplier effect.
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Key words:
- 3D geological model /
- double stencil buffer /
- RTT camera /
- real-time cutting /
- engineering geology
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表 1 单次剖切效率比较
Table 1. Single cut efficiency comparison
三角面片数(万个) 普通剖切剖面生成时间(ms) 基于双模板缓冲剖面生成时间(ms) 缩减时间(ms) 提高效率(%) 8.69 2 207.06 0.34 2 206.72 99.98 14.98 2 212.10 1.13 2 210.97 99.95 19.92 2 214.17 1.18 2 212.99 99.95 25.88 2 215.33 1.40 2 213.93 99.94 29.79 2 217.88 1.70 2 216.18 99.92 
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