亚博ag真人规律现实捕获在国家地理的失落城市与阿尔伯特·林（Albert Lin）中扮演着重要角色

Author: Duncan M B Lees

一部针对国家地理的开创性新电视连续剧结合了高科技科学，令人叹为观止的视觉效果和真正的探索，使一些最非凡的古代地点栩栩如生。失落的城市with Albert Linfrom Blakeway Productions follows the explorer Dr. Albert Yu-Min Lin as he uncovers new insights about forgotten cities and cultures.

高清3D映射专家Visualskies被引入以在位置提供定制的3D扫描服务，并为节目创建空间数据可视化。Visualskies 3D扫描专家Duncan M B Lees解释说：“我们与Albert和Blakeway Crew紧密合作，基于科学方法来开发一种叙事，以收集空间数据。结果是一系列雄心勃勃的节目，通过我们的高科技图像提供了强大的情感故事。”

为了使过去的奥秘在当前生动地成为焦点，Visualskies使用了Leica Geosystemslaser scanningsolutions.

Laser scanning: an exciting new tool for archaeology and exploration

Laser scanning technology was crucial to capture and remodel a level of 3D detail otherwise impossible to achieve, to build a picture of how reality would have looked to our ancestors. Speaking about ruins in Akko (Acre) in Israel, Lees explains, “Utilising drones, terrestrial and aerial laser scanners and our custom-built AR software we enabled Albert to step back in time and truly visualise the city as it used to be in Crusader times.”

Visualskies put together a custom combination of scanning equipment, including theLeica Scanstation P50long range 3D terrestrial laser scanner, the highly portableLeica RTC3603D激光扫描仪和狮子旋风和3dreshaper（Cyclone 3DR）点云处理软件。

Meeting challenging weather conditions and inaccessible terrain

所有的网站选择要包含在食物中ram posed challenges for the film and survey crew. From 50-degree deserts in Jordan to the high altitude of Machu Picchu, where “processing in tents up in the rarefied atmosphere with only a pair of temperamental generators for power was less than ideal,” says Lees. The equipment used needed to be both portable and durable. The long-range capabilities of the ScanStation P50 meant that the crew could cover large areas and scan inaccessible sites from a place of safety, while still capturing a high level of detail. The laser scanner is quick to set up, can perform at extreme temperature ranges and is tough enough to withstand a jungle trek.

在哥伦比亚圣玛尔塔（Santa Marta）进入佩迪达（Ciudad Perdida）（字面上是“失落的城市”），需要一段漫长的旅程，涉及第一架飞机和直升机，然后是远足，而团队携带着他们所需的一切。Lees解释说：“我们对失落城市现存的遗迹的第一印象是一种壮观的空中景观，强调了记录城市和Ciudad Perdida周围广阔景观的困难。”

“令人震惊的影响：”使用3dreshaper通过茂密的植被'看到'

这些困难之一是茂密的植被。Lees解释说：“由于整个内华达州内华达山脉的郁郁葱葱的树木覆盖物，大多数Tayrona综合体（在Ciudad Perdida中）几乎看不见完全是传统的调查技术。”

The team used a combination of aerial and terrestrial scanning techniques and 3DReshaper (Cyclone 3DR) in post-processing to achieve their goal. “It is a perfect solution for cleaning, segmenting and filtering point clouds for a number of 3D modelling and inspection deliverables. 3DReshaper provides us with the ability to strip away the tree cover and visualise what lies below; something that has had a startling impact on many of the projects we have undertaken.”

Easing the pressure of tight timescales and ‘one chance’ to get results

Along with geographical constraints, Visualskies needed to survey quickly, to meet a tight travel schedule and tight film production deadlines. “The schedule for the whole失落的城市系列非常紧凑；通过数字记录众多站点，可视化遗体并拍摄整个程序，所有程序都在一个相对较短的并发时间范围内进行。” Lees解释说。

The equipment used needed to be quick to set-up and easy-to-use, reducing the stress and pressure that the team were under. Both the Scanstation P50 and RTC360 are fast scanners. Using the ScanStation P50 the team were able to capture an entire site at Khirbet al-Darieh, Jordan - and have a 3D model ready to film for broadcast - in just one day.

Lees says that “the RTC360 has been a game changing addition to our 3D reality capture capabilities. We can now collect over twice as much data in any working shift or, more importantly, halve our time capturing data at any location.” The speed of processing software is equally as important. Lees continues, “Cyclone can process huge amounts of terrestrial laser scanning data - hundreds of individual scanner setups resulting in many hundreds of millions of individual points - enabling the registration, manipulation and analysis of the resulting geospatial point cloud dataset with ease.”

“The use of laser scanning and 3D modelling on失落的城市with Albert Linwas not only fascinating for audiences, but it has also real archaeological value too,” says Lees. For example, on the Pacific island of Pohnpaip, the Visualskies crew scanned an extraordinary collection of over 700 prehistoric motifs carved into a natural basalt terrace. “By creating 3D models of the petroglyphs, we enabled Albert and the crew to clarify the exact form of the fading petroglyphs, to study them in detail and to make comparisons with other ancient carvings from elsewhere in the Pacific.”

该计划的工作为VisualSkies创造了一个新的方向，使他们为电视和电影业开发了开创性的侦察工具。应于2021年1月官方发布VSSCOUThas been designed as a tool-kit to aid productions to explore locations in a radically immersive manner, whilst simultaneously collecting rich geomatic data that can be utilised across departments enabling all crew to access the site remotely.

Lees concludes, “It is our privilege and pleasure to work with exceptional professionals in incredible places around the world, dovetailing our bespoke solutions into the creative process to produce breath-taking results for all to see.”