Cyclone FIELD 360 boosts productivity in the field

Since its introduction in 2018,狮子旋风FIELD 360is one of the only mobile-device apps on the market which can perform pre-registration procedures and point cloud alignment, in combination with the high-performingLeica RTC3603D激光扫描仪和Leica BLK360imaging laser scanner.

Prior to the introduction of Cyclone FIELD 360, registering point clouds to each other posed a key challenge when working with terrestrial laser scanners. There were some solutions on the market that offered registration in the field, however due to the data transfer time, computing time and high-spec hardware requirements, the data acquisition was slowed down which hindered productivity in the field. Cyclone FIELD 360 combined with the Lightweight Preview Object (LWPO) technology not only make pre-registration possible within seconds when in the field, it also allows customers to use their own Android or iOS mobile devices such as smartphones or tablet computers.

Let’s take a look at the key functionalities that make this ground-breaking technology possible:

轻量级预览对象（LWPO）
360 enabl气旋内LWPO技术领域es a visual representation of the captured scan data, using only a fraction of the actual scanned points. The data size is therefore dramatically decreased as well as the data transfer time between the laser scanner and mobile device. It provides instant visualisation of the captured scan data on your chosen mobile device which allows you to check and inspect the data for completeness. It is important to know that using LWPO in Cyclone FIELD is fundamental for enabling complicated operations, such as automatic point cloud alignment to be done with minimal time and resources on mobile consumer end devices such as smartphones or tablets.

3D View
使客户使用自己的移动设备确实带来了挑战。一个挑战是在3D中显示和导航大点云的同时管理具有有限功能的不同设备。这可以部分通过限制屏幕上显示点的总数，以使数据可视化仍然最佳地执行。如果显示由多个设置组成的捆绑包，则比仅显示单个设置的情况似乎更稀疏。管理移动设备功能的另一种策略是将云密度链接到视点距离。如果观点远离点云，则相对较少的点可以详细地代表扫描区域。另一方面，用户将放大点云的小区域，则显示更多点以确保每个细节可见。这两种方法在背景中同时工作，而无需任何用户交互，以确保在3D中查看和导航点云时获得平稳而响应的体验。

Pre-registration
One core feature of Cyclone FIELD 360 is pre-registering the down-sampled scan data to one another directly in the field. The relative scan positions resulting from the pre-registration help to reduce the final registration effort on the full datasets in the office. For maximum efficiency in the field, the pre-registration time cannot exceed the scan time in order to make sure that data acquisition in the field is not slowed down (the user is ready when the scanner is).

This pre-registration time is minimised by two factors:

• 较小的计算时间（对LWPO数据进行了优化算法）
• Streamlined workflow with minimal user input

The combination of these factors is what makes pre-registration of LWPOs in the field effortless and easy with Cyclone FIELD 360. Especially for BLK360 and RTC360 LT, the pre-align feature plays a key role with regards to both of the above mentioned factors.

Pre-align feature for BLK360
Cyclone FIELD 360 was first released with the RTC360 3D laser scanner in 2018 and since May 2019 it also supports the BLK360. While RTC360 delivers relative setup positions based on theVisual Inertial System (VIS) technology, the BLK360 does not have this feature so information about the relative setup positions is not available to start with. This means that before optimising the scan positions and creating a link, users would have to manually align the setups to each other in the field. Depending on the complexity of the environment, this manual alignment process takes time and can be prone to human errors.

为了减轻这些风险并加快工作流程的速度，在Cyclone Field 360的2.1版中介绍了预先准备的功能。预验前是Cyclone Field 360中的功能，该功能自动将两次扫描（共享重叠）对齐而没有任何有关其任何信息的信息大约相对位置。为了使扫描对齐，在两个点云中必须知道重叠区域中至少三个相同的点。在两个点云中，Align前的次数最多可获得3,000点，并使用巧妙的算法具有相似的几何属性匹配点。

视觉匹配(粉红线,700 3000)between points with similar geometric properties in two point clouds that share overlap: in arbitrary orientation and translation on the left, in correct orientation but incorrect translation in the middle and aligned to each other on the right.

对现场用户的剩下要做的就是优化相对扫描位置并创建链接。这三个操作所花费的时间确实取决于使用的移动设备，但是对于功能强大的设备（例如，具有4GB RAM和Apple A12X A12X Bionic芯片组的iPad Pro 2018），在不到三秒钟的时间内实现了预先对准的两次扫描，并优化了它们预先对准的位置需要不到一秒钟。包括验证结果并创建链接的时间，可以说可以在五秒钟内完成对现场的两个LWPO的预注册！

Peace of mind
使用Cyclone Field 360不仅允许用户直接在现场检查捕获的扫描数据，还提供了信心，即办公室中的最终注册将签出（足够重叠），并且通过交付近似设置来加快整个注册过程办公软件可以使用的职位。客户可以通过在其Android或iOS智能手机或平板电脑上下载免费应用程序，而无需在现场内其他硬件成本或超级强大的计算机来利用所有这些好处。

Cyclone Field 360是我们整体激光扫描工作流程不可或缺的一部分，并且可以进行持续改进以嵌入客户反馈并进一步提高系统生产率。

The Cyclone FIELD 360 mobile-device app is free to download. A valid Cyclone REGISTER or Cyclone REGISTER 360 licence is required to activate Cyclone FIELD 360.

Download the Cyclone FIELD 360 app from theApp StoreandGoogle Play。

有关更多信息，请联系您当地的Leica Geosystems销售代表。

Jakob Lidl
Senior Product Engineer, Terrestrial Laser Scanning
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