120m range hand-held or backpack 3D LiDAR HiSLAM in building facade
measurement
Building facade measurement is not only the core project of
upgrading old buildings and building 3D model construction in
digital city construction, but also the urgent demand for the
protection of ancient buildings and the acquisition of facade
results of new buildings (structures). At present, the difficulties
of building facade measurement are mainly reflected in the
following two points: first, building facade measurement requires a
high degree of detail refinement; the shape feature points of
buildings are numerous, the data acquisition is difficult, and the
measurement efficiency is low. Second, the building facade
measurement task is large and the time cycle is short. The
traditional theodolite intersection method, total station
prism-free measurement, rangefinder, steel ruler measurement and
other building measurement methods have serious shortcomings of
insufficient operation efficiency.
With the development of 3D laser scanner technology and the
emergence of handheld 3D laser scanner based on SLAM technology, it
brings new solutions for building facade measurement.With the
characteristics of compact, portable and mobile scanning, it can
effectively improve the scanning efficiency.
The process of building facade measurement based on HiSLAM includes
three main steps: field survey, field data collection and internal
data processing. High-precision 3D laser point cloud data of
buildings can be obtained through HiSLAM field data acquisition
operation, and then manual in-job mapping operation can quickly and
efficiently obtain facade information.
Specification
| Items | Parameters |
| System Accuracy | ≤10cm(outdoor absolute accuracy) |
| ≤10cm(indoor relative accuracy) |
| Measurement Range | 120m@20% |
| Scanning Point Frequency | 300,000points/s |
| Panoramic Camera | ≥12MP |
| Data Storage | 512GB SSD |
| Data Transmission | GigE/USB3.0 |
| Battery Life | ≥4h |
| Operation Temperature | -10-50℃,humidity < 85% |
| Weight | ＜2.5KG(handheld host) |
| Operation Mode | Handheld/Backpack |
Advantages
1. Integration: highly integrated, indoor and outdoor integration
2. Calibration free: calibration is independent of the carrier
3. High accuracy: high point cloud density, high point recognition
rate, high measurement accuracy
4. High reliability: high degree of productization, stable and
reliable system
5. High intelligence: seamless integration of point cloud an
panorama
Building facade measurement results with handheld 3D laser scanner
based on SLAM technology
