The angular fields of view in which a terrestrial laser scanner captures data differ according to instrument construction. Both the socalled panoramic and hybrid instruments scan through a full horizontal field of view but their vertical fields of view can differ considerably in terms of range and mode of data acquisition. The differences in operational mode govern the allowable range for each ...

A 3-D Monte Carlo ray-tracing simulation of LiDAR propagation models the reflection, transmission and absorption interactions of laser energy with materials in a simulated scene. In this presentation, a model scene consisting of a single Victorian Boxwood (Pittosporum undulatum) tree is generated by the high-fidelity tree voxel model VoxLAD using high-spatial resolution point cloud data from a ...

Terrestrial laser scanners are increasingly being used for cultural heritage recording and engineering applications that demand high spatial resolution. Knowledge of an instrument’s spatial resolution is necessary in order to prevent aliasing and estimate the level of detail that can be resolved from a scanned point cloud. In the context of laser scanners, spatial resolution can be decoupled in...

Nowadays, the demand for 3D models of historical monuments is continuously growing in the field of archaeological and architectural applications. Currently, the two main sources that can provide detailed and reliable 3D surface models are Photogrammetry through image-based modeling and Terrestrial Laser Scanner through laser scanning techniques. Among the plenty of works so far presented the us...

Today very fast terrestrial laser scanners are available which can be very well combined with panoramic cameras to make 3Dpanoramic recording possible. Due to the very precise depth information of the laser scanner and the high resolved color information provided by the CCD sensor of the panoramic camera 3D-panoramic images of high quality can be obtained. In order to assess the performance of ...

SUMMARY Recent developments of terrestrial laser scanners have made these accurate and efficient survey instruments more affordable and portable. In this paper, the geometric accuracy of two terrestrial laser scanners (i.e. the FARO Focus 3D and the Leica HDS6100) is being evaluated. Both of these mid-range instruments are phase-based and have a panoramic architecture. The Focus 3D is currently...

For forest management or monitoring, it is required to constantly measure several parameters of each tree, such as height, diameter at breast height, and trunk volume. Terrestrial laser scanner has been used for this purpose instead of human workers to reduce time and cost for the measurement. In order to use point cloud captured by terrestrial laser scanner in the above applications, it is an ...

Intensity value based point cloud segmentation has received less attention because the intensity value of the terrestrial laser scanner is usually altered by receiving optics/hardware or the internal propriety software, which is unavailable to the end user. We offer a solution by assuming the terrestrial laser scanners are stable and the behavior of the intensity value can be characterized. The...