激光扫描模型Surfacing Lidar
Surfacing Lidar _ 1 _ Prerequisites
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Learn the necessary prerequisites needed to understand and complete this tutorial.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
了解理解和完成本教程所需的必要先决条件。
Surfacing Lidar _ 2 _ Technical Overview
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
A general overview of the workflow employed
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
所用工作流程的总体概述
Surfacing Lidar _ 3 _ Importing the Point Cloud
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Learn how to import the lidar scan data and a discussion of what it represents.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
了解如何导入激光雷达扫描数据并讨论它代表什么。
Surfacing Lidar _ 4 _ Overview of Matrices
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
A discussion of how matrices encode transformation information and how we can extract this information to
find the position of the lidar scanners.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
讨论矩阵如何编码变换信息以及我们如何提取这些信息以
找到激光雷达扫描仪的位置。
Surfacing Lidar _ 5 _ Generating Normals
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
In order to surface a lidar scan you need to create good normals. Set up a for loop to process each of the scans. Inside the for loop use the particle fluid surface as a means of generating normals that you will transfer back to the original lidar scan.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
为了显示激光雷达扫描，您需要创建良好的法线。设置一个 for 循环来处理每个扫描。在 for 循环内部，使用粒子流体表面作为生成法线的方法，您将把法线传输回原始激光雷达扫描。
Surfacing Lidar _ 6 _ Compute the Direction to Scanner
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Compute the direction from the points in the scan to the position of the lidar scanner. You will use this to compute which surfaces are occluded from the scanner. Included in this video is a discussion of how you can create a direction vector from two points.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
计算从扫描点到激光雷达扫描仪位置的方向。您将使用它来计算哪些表面被扫描仪遮挡。本视频中讨论了如何从两点创建方向矢量。
Surfacing Lidar _ 7 _ Compute Occlusion
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Use the vector computed in the previous video to calculate which surfaces are occluded from the scanner and remove them.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
使用上一个视频中计算的矢量来计算哪些表面被扫描仪遮挡并移除它们。
Surfacing Lidar _ 8 _ Transfer Normals
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Now that the superfluous geometry has been removed you can transfer the normals back to the original lidar scan. Rather than use attribute transfer use the vex functions xyzdist() and primuv() to get a more accurate transfer.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
现在已经删除了多余的几何体，您可以将法线传输回原始激光雷达扫描。与其使用属性传输，不如使用 vex 函数 xyzdist() 和 primuv() 来获得更准确的传输。
Surfacing Lidar _ 9 _ Surfacing the Lidar Scan
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Surfacing and cleaning up the entire lidar scan.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
对整个激光雷达扫描进行表面处理和清理。
Surfacing Lidar _ 10 _ Surfacing with PDG
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Surface the lidar scan in sections with PGD. This makes it possible to parallelize the surfacing processes using a render farm.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
使用 PGD 分段显示激光雷达扫描。这使得使用渲染农场并行化表面处理成为可能。
Surfacing Lidar _ 11 _ Reassemble the PDG Output
Lessons & Project Files: sidefx.com/tutorials/surfacing-lidar/
Taking the output from PDG reassemble it to end up with the finished surface.
谷歌翻译：
课程和项目文件：sidefx.com/tutorials/surfacing-lidar/
将 PDG 的输出重新组装起来，最终得到完成的表面。
