Evolution of 3D Handheld Mapping Systems

 

 

Initially developed for robots and autonomous appliances, mobile mapping systems differ from traditional terrestrial laser scanners (TLS) by relying on modern Simultaneous Localization and Mapping (SLAM) algorithms rather than targeting and survey control. This SLAM technology essentially performs a traverse scan as you move and automates a significant amount of the mapping workflow. In addition, mobile mapping has matured substantially since its introduction to the market. Newer systems use algorithms that reduce tracing errors and drift automatically; they also offer a reliable process for correcting errors manually, thus allowing you to maximize the accuracy of your final point cloud.

Terrestrial laser scanners (TLS) provide a highly accurate scan, but some are bulky, and traditional survey-based targeting is time-consuming. SLAM-based mobile mapping systems allow the user to walk through an environment, building a map as they go. In removing laborious setups, survey times are slashed, and data acquisition up to ten times faster. In addition, mobile scanners can be carried by hand or in backpacks, mounted to vehicles or drones, and even connected to poles, thus allowing access to challenging and confined spaces not previously accessible.

This article will review the many possibilities of our three most popular 3D handheld scanner manufacturers.

GeoSLAM is a fast scanning, go-anywhere mapping system incorporating user-friendly software. Ideal for large-scale, rapid capture projects and challenging environments such as caves, mines, forests, and open fields. It creates real-time site surveys of residential, commercial, and industrial facilities—ideal for comprehensive documentation of existing structures to be refurbished, remodeled, or extended. The GeoSLAM scanners are a complete unit that transmits data directly to point cloud formats without user input.

 

 

The new GeoSLAM 3D process automation solution, Connect, provides weekly progress monitoring and easy data distribution to all parties providing clear, open communication throughout the project life cycle. In addition, continuous improvement and refinement have made the GeoSLAM algorithm equally efficient outdoors as it is indoors.

 

	ZEB Go	ZEB Revo RT	ZEB Horizon
Rating	IP64	IP51	IP54
Range	30m	30m	100m
Accuracy	1-2cm*	1-2cm*	1-2cm*
Best Usage	Indoor	Indoor	Indoor and Outdoor
ACCURACY REPORT

The ZEB Go and ZEB Revo RT are medium-range data capture systems designed for rapidly mapping building interiors. These scanners can quickly map an entire floor and convert it to a 2d plan or 3D model. The ZEB Horizon combines the same rapid capture with long-range allowing surveyors to map large areas like a school campus. Additionally, the Horizon mounts easily to a vehicle enabling a single surveyor to capture an entire street setting.

DOTProduct produces lightweight all-in-one handheld scanner/tablet units. Their DPI scanners are excellent for medium-range and short-range applications such as mapping mechanical service areas. The largest site capturable in one scan is approximately 750 sq ft; however, activating the larger screen capture functionality may increase that size to 1000 sq ft. SR (short-range) models are particularly adept at scanning equipment, objects, and very tight spaces.

 

 

DOTProduct scanners, operating Dot3D scanning software, capture interior and exterior spaces, delivering accurate high-resolution color scan data in minutes. Furthermore, point cloud data can be reviewed and edited immediately on the tablet and exported directly to industry-standard color point cloud formats. Dot3D can be installed on many tablets or phones and is compatible with a growing list of powerful 3D cameras, allowing for high resolution/high accuracy data capture even in daylight. Additional accessories include a light kit for dark spaces and an extension kit for hard-to-reach areas.

 

	DPI-10	DPI-10SR	DPI-X	DPI-XSR
Range	2-12ft	1-6ft	2-12ft	1-6ft
Accuracy	2-5mm	2-4mm	2-5mm	2-4mm
Best Usage	Long-range	Short-range	Long-range	Short-range

With cross-platform and cross-sensor compatibility, DOTProduct software integrates with most market workflow programs such as AutoDesk, AVEVA, Bentley, Bloom Cloud Engine, ClearEdge3D, WorldViz, Z+F, and many others. Compatible with a variety of devices, it is the most budget flexible mobile scanning system.

 

Mantis Vision scanners make fast and highly accurate 3D color scene capture accessible to anyone. Their F6 industrial 3D scanner turns mechanical equipment, piping spools and, small workspaces into high-resolution 3D point clouds and mesh models in real-time.  Easy to use with no need for scene preparation or targets, Mantis Vision scanners are particularly effective in small areas and hard-to-reach places. In addition, challenging lighting conditions can be captured with a bright LED light attachment. Their advanced accuracy and ability to operate indoors and outdoors make Mantis Vision scanners indispensable for highly complex projects such as mapping mechanical spaces, reverse engineering, forensics, architectural feature documentation, and modeling for AR/VRI.

 

 

The F6 models are a two-component system consisting of a handheld scanner and a separate tablet running the Echo software. The technician operates the scanner like a wand while seeing the data developing on the screen. These lightweight scanners have a built-in camera to colorize point clouds and produce photorealistic textured mesh models. The F6 units operate using Mantis Vision’s free Advanced Echo software, compatible with CAD or Solidworks platforms. In addition, Mantis Vision’s proprietary critical feature density makes it ideal for scanning intricate equipment and systems like an oil tanker control system.

 

	F6 Smart	F6 Short Range
Range	0.5-4m	0.2-0.75m
Accuracy	500 micron	100 micron
Depth Resolution	1mm	0.4mm

The mobile laser scanning industry is in a progressive change. As mobile mapping systems continue to become more accurate and sophisticated, able to accommodate any challenges introduced, project applications continue to increase. Users have substantial control over the quality of the final deliverable, and as a result, our ability to accurately scan any surrounding environment has grown dramatically.  

Investing in a 3D mobile mapping system that effectively reduces errors during the scanning process and allows the user to make necessary workflow corrections manually provides mapping professionals with a high-quality result.