Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 42 for “"Surface normal"”.
-
Circumferential Three-Dimensional Profiling with Specular Micro-Texture Photometry for Dark Objects
… photometry. A small patch of a target surface in micro-texture level yields different appearance under different illumination. This photometric property can be used to reconstruct the target surface with pixel-level resolution. However, due to the nature of some material, the surface of …
-
Nonparametric directional perception
… also the local orientations of the constituent surfaces, has huge potential. From an indoor scene to large-scale urban environments, a large fraction of the surfaces can be described by just a few planes with even fewer different normal directions. This sparsity is evident in the surface normal …
-
Two- and Three-dimensional Face Recognition under Expression Variation
… across all faces, denoted as the closest-normal points (CNPs). It is shown that the performance of the linear discriminant analysis (LDA) method, applied to such an aligned representation of 3D faces, is significantly better than the performance of the state-of-the-art methods which, rely …
-
Learning Monocular Cues in 3D Reconstruction
… deep neural networks to predict pixel-wise surface normal and depth. For surface normal estimation, we propose a new parameterisation for the surface normal probability distribution and use it to estimate the aleatoric uncertainty associated with the prediction. We also introduce an …
-
Elemento finito para placas e cascas usando a teoria de Kirchhoff-Love
… the continuity of rotations for the middle surface normal vectors, it was used Hermite interpolation functions for the transverse displacements and incomplete quadratic polinomials for the in-plane displacements. The finite-element formullated were retangular, conforming and possessed 32 …
-
Development of automated local Fe head surface coordinate systems generation process
… with the origin at a chosen point and the surface normal at the zero-angle position, is described. The resulting FE file allows the user to efficiently set up complex load cases and even opens the door to future machine learning (ML) processes.
-
In situ studies of the binding and reactivity of small molecules at metal electrode surfaces
… molecules on Au(111) single crystal electrode surfaces. In the first study, the initial stages of the binding and oxidation of phenol at high pH were addressed. Phenoxide binds to the electrode surface through the oxygen atom and is tilted away from the surface normal prior to oxidation, as …
-
Kinect cloud normals: towards surface orientation estimation
… multitude of scenes and an approach to determine surface normals from these images. The goal of this endeavor is to provide a dataset of RGB images and surface normal estimates for each image so that the latter may serve as the ground truth for both training and evaluation of algorithms estimating …
-
Thread-wire surfaces
This thesis studies surfaces which minimize area, subject to a fixed boundary and to a free boundary with length constraint. Based on physical experiments, I make two conjectures. First, I conjecture that minimizers supported on generic wires have finitely many surface components. I approach this …
-
Superpixel Segmentation of Outdoor Webcams to Infer Scene Structure
… explores methods of solving for a superpixelΓÇÖs surface normal, and demonstrates that the time at which maximum brightness is achieved serves as a basic indicator of geographic orientation.
-
Computation of Breast Ptosis from 3D Scans of Torso
… of three-dimensional (3D) features such as surface curvature, coronal projection and surface normal for the assessment of breast ptosis using 3D scans of the torso. Experimental results suggest that 3D features are successful for objectively categorizing breast ptosis with high accuracy and …
-
Apparent ridges for line drawing
… and reflectance modification, we should focus on normal variation. Second, view-dependent lines better convey the shape of smooth surfaces better than view-independent lines. From this we define view-dependent curvature as the variation of the surface normal with respect to a viewing screen plane, …
-
Quantitative Analysis of Acoustic Emission From Rock Fracture Experiments
… and the Panametrics V103 was sensitive to surface normal displacement. These calibration results were applied to two AE data sets from rock fracture experiments in order to characterize the sources of AE events. The first data set was from an in situ rock fracture experiment conducted at …
-
Sensor-based automated path guidance of a robot tool
… a simultaneous measurement of the orientation (surface normal) and position of a 3-dimensional unknown object for a precise tool path guidance and control. The proposed system can guide the robot manipulator while maintaining specific orientation between the robot end-effector and the workpiece …
-
Soft, round, high resolution tactile fingertip sensors for dexterous robotic manipulation
… to map the relationship between RGB value and surface normal orientation of the membrane at a point. Finally we perform two dexterous manipulation task with feedback from the sensors in the form of controlled rolling of an object on a support surface, and lid removal off a jar. We also give …
-
An experimental investigation of the effects of acceleration on the combustion characteristics of an aluminized composite solid propellant
… conducted with the acceleration loads directed normal into the burning surface, normal away from burning surface, and at angles of 30° and 60° into the burning surface. As the normal acceleration load into the burning surface increased, the burning rate and the amount of residue retained within …
-
Orientation and Dynamics of Nanoscale Liquid Crystalline Films
… spectroscopy (FTIR). The homogeneity of the surface-induced orientation is largely dependent on the thickness of the films. A 40 nm film demonstrates surface anchoring in the strong binding limit, while a thicker 300 nm film, though still showing strong surface effects, exhibits more …
-
Investigation of polymer waveguides for fully embedded board-level optoelectronic interconnects
… couplers can provide high input and output surface-normal coupling efficiency. The fully embedded system features high tolerance to the linear and angular misalignments due to the possible fabrication imperfection. Ultradel 9000 series polyimides are used to form the waveguide and mirror …
-
Photometric stereo for micro-scale shape reconstruction
… using photometric stereo (PS) with surface normal integration (SNI). Based on the proposed approach, a portable cost-effective stationary system is developed to capture 3D shapes in the order of micrometer scale. The PS with SNI technique is adopted to reconstruct 3D microtopology …
-
Angle-Resolved Thermal Desorption Spectroscopy as a Surface Probe
… desorption, where the flux is focused along the surface normal, has been observed in several systems, notably hydrogen desorbing from nickel. This has been explained by invoking a flat barrier to adsorption that selects particles with some minimum normal component of kinetic energy to adsorb. …
Page 1 of 3