Photogrammetric determination of 3D crack opening vectors from 3D displacement fields
نویسندگان
چکیده
منابع مشابه
Interactive Specification of 3D Displacement Vectors using Arcball
Direct interactive manipulation of 3D objects is very important in Computer Graphics. The user interface to deal with this problem poses a difficult problem because of the high number of degrees of freedom involved, associated with the loss of depth in the viewing projection. This paper introduces a new technique to specify displacement vectors in the three-dimensional space. The technique is b...
متن کاملDisplacement Discontinuity Analysis of the Effects of Various Hydraulic Fracturing Parameters on the Crack Opening Displacement (COD)
The combination of horizontal drilling along with hydraulic fracturing has significantly improved the production of hydrocarbon reservoirs and made it possible to extract the relatively impermeable and uneconomical reservoirs. The production rate of oil and gas wells increases proportional to hydraulic fracture aperture or crack opening displacement (COD). This is an important parameter i...
متن کاملPhotogrammetric 3d Reconstruction of Lightning Discharges
A computer vision setup is presented for the automated detection and multi-view 3D reconstruction of lightning discharges. The system is designed to operate autonomously in a continuous mode and provide accurate position information of the lightning discharge path and impact point relative to its surrounding area. Extensive tests in a medium scale laboratory environment show that a relative mea...
متن کاملClassification of Aerial Photogrammetric 3D Point Clouds
We present a powerful method to extract per-point semantic class labels from aerial photogrammetry data. Labelling this kind of data is important for tasks such as environmental modelling, object classification and scene understanding. Unlike previous point cloud classification methods that rely exclusively on geometric features, we show that incorporating color information yields a significant...
متن کاملPhotogrammetric 3D structure reconstruction using Micmac
We consider a complex image processing problem, namely the reconstruction of the 3D structure of objects pictured from different points of view. Amongst the tools available to achieve such a result, the most serious solution for achieving a quantitative model of the object (dimensions in real units, opposed to a point cloud graduated in pixels) is a software provided by the French National Geog...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ISPRS Journal of Photogrammetry and Remote Sensing
سال: 2020
ISSN: 0924-2716
DOI: 10.1016/j.isprsjprs.2020.03.019