Unveiling the past with reality capture

Authors:Renata BarradasGutiérrez，Josep M. Puche Fontanilles，Pau deSolà-Morales

古罗马城市塔拉科（Tarraco）是当今西班牙加泰罗尼亚地区的塔拉贡（Tarragona），是伊比利亚半岛上最古老的罗马定居点，曾经是半岛领土的首都。塔拉戈纳（Tarragona）光荣过去的建筑遗迹包括其他废墟，马戏团，剧院和圆形剧场。这个考古合奏是2000年前建造的，自2000年以来是联合国教科文组织世界遗产的一部分。

The Catalan Institute of Classical Archaeology (ICAC) and the Architecture School of the URV (ETSA) joined efforts with the help of ARREL Project of the RecerCaixa program to study, preserve and transmit the cultural richness of Catalonia’s past using Leica Geosystems’ state-of-the-art laser scanning technologies and a unique mobile mapping solution - the飞马：背包.

The committed team of archaeologists are proficient in transforming point clouds and HDR digital imagery into 3D CAD models. These skills, combined with their in-depth historical and archaeological knowledge, helped tounveil and understand the secrets of this Roman citythat once served as a model for provincial capitals in the rest of the Roman Empire.

Looking at the big picture

A detailed digital 3D model is a reconstruction of reality that enables the study of a determined space.

The tri-dimensional digital models of the Roman circus, a large open-air entertainment venue for chariot races and horse races, obtained from the point clouds were the basis tostudy and understand the initial state and transformationthat this heritage site has experimented during two millennia.

“The laser scanning solutions from Leica Geosystems allow us todigitally visualise and understand the complex realityof this four hectare enclosure occupied by the Roman Circus, located today in Tarragona’s old town, that represented a real challenge of Roman engineering and that is intensely altered from the actions developed since the fifth century,”ICAC高级研究员Josep M.MaciasSolé说。

The 3D models generated with the point clouds helped the team of specialists to achieve:

• 以数字方式重建罗马马戏团，甚至找到逃脱人眼的部分。
• Interpret the components of the structure to test hypothesis about the circus’ capacity and the logic behind its initial construction and later buildings.
• Decipher the development of the local landscape throughout centuries to determine how this Roman edification conditioned the urban plot of the city in medieval and modern times.

Putting the pieces together with mobile reality capture

最初充当罗马马戏团的结构，这些年来遭受了深刻的建筑变化，现在它被插入并隐藏在塔拉加纳（Tarragona）的城市景观下。罗马马戏团位于市中心，向游客开放了展览区，但是，支持该舞台的旧穹顶是房东，酒吧，餐馆甚至私人住宅的结构。

使用一代Leica Geosystems的激光扫描仪，与C5和C10一起使用一代左侧的激光扫描仪，已经进行了几项努力，以使用最新的激光扫描技术之一 - Leica P30。iCAC和ETSA已通过现实捕获传感器平台最终使这些努力达到顶峰bob综合app赌博统一所有以前的扫描 -飞马：背包.

All the visible parts of the Roman circus have been documented with the laser scanners. The Pegasus:Backpack, however, made it possible tocapture every step of all the streets and facades塔里亚纳（Tarragona）的旧城区，该城镇插入了罗马马戏团所占据的地区。这种独特的现实捕获解决方案的使用还促进了城市的bob综合app赌博当代和古老建筑的图形整合到一个单一的工作流程中。

“The Pegasus:Backpack offers us the great advantage of being able to cover areas that otherwise would be very cumbersome and very expensive with more traditional survey systems. With this tool we couldeliminate much of the field work然后处理数据并将其与我们为整个区域的全面文档进行的其他项目拟合，”MaciasSolé说。

“All this process ofcapturing data with millimetric precision一直非常agile and effective, and we alwayscounted on the technical support以及Leica Geosystems专家的持续建议。”

连接学科

罗马马戏团的考古遗骸是罗马建筑和规划的证词，并提供了关于这种古老的建筑如何在每个世纪中发展和改变塔拉贡的历史和景观的蓝图。

Tarragona遗产的3D文档允许ICAC的考古学家和ETSA的建筑专业的学生开发：

• Historical urban studies
• 历史遗产的教育学和博物馆
• Archaeological research
• 会计计划和遗产管理系统

通过激光扫描捕捉现实，打开了一扇门，来自考古学家和建筑师等几个学科的专家可以converge to study, map, monitor, and conserve any building or asset.As seen in Tarragona, Spain, Leica Geosystems’ solutions help professionals become more efficient and accurate on how they produce, share and evaluate information.