In this paper, we propose a new approach to extract planar patches and boundary from a set of LiDAR point cloud. In the beginning, the 3D point cloud set is partitioned and assigned to fixed-size cubes. Secondly, local planar patches are generated by extracting surface normal vectors within each cube. Finally, the global planes are formed by grouping the planar patches. The boundary of global p...

An upgraded optical coherence tomography system with integrated retinal tracker (TOCT) was developed. The upgraded system uses improved components to extend the tracking bandwidth, fully integrates the tracking hardware into the optical head of the clinical OCT system, and operates from a single software platform. The system was able to achieve transverse scan registration with sub-pixel accura...

Signals generated by moving tracked vehicles can be significantly affected by near-surface materials including pavements, compacted soils, shallow bed rock, and the water table. The ways that seismic signals depend on these surface layers are examined by analyzing impulsive point forces applied at the earth-air interface. Fields are calculated using a plane layered frequency domain wavenumber m...

We adopt the deep learning method CASI-3D (Convolutional Approach to Structure Identification-3D) infer orientation of magnetic fields in sub-/trans- Alfvenic turbulent clouds from molecular line emission. carry out magnetohydrodynamic simulations with different field strengths and use these generate synthetic observations. apply 3D radiation transfer code RADMC-3d model 12CO 13CO (J = 1-0) emi...

Distributed Acoustic Sensing (DAS) is a novel technique with low cost, no production deferment, complete coverage and repeatability for seismic data acquisition in vertical seismic profile (VSP), hydraulic fracturing monitoring, well and reservoir surveillance and micro-seismic detection. In this paper, we give a review on the field applications of DAS and the corresponding pre-processing metho...

Reliable seismic vulnerability analysis is generally based on time-domain simulations of structural responses. The seismic load is then modelled by a stochastic process, representing seismic ground motion. For this purpose, the analyst can use recorded accelerograms or work with synthetically generated ones. When performing advanced probabilistic analyses, synthetic accelerograms are often used...

Reservoir modeling is the process of generating numerical representations of reservoir conditions and properties on the basis of geological, geophysical, and engineering data measured on the Earth’s surface or in depth at a limited number of borehole locations. Therefore, reservoir modeling requires an incorporation of the data from a variety of sources, along with an integration of knowledge a...

During the last decades, digitization broadened access to cultural heritage collections for public audiences. Large online databases have been prepared for open access with simple search interfaces or visual exploration methods. In this position paper we discuss new challenges arising from these initiatives with regard to casual users. To meet their specific needs, we introduce a novel method f...