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 144 for “"Specular"”.
-
On interpellation: an introduction to specular sociology
… (cf. Althusser, 2014, 2003, 1971a, 1970). A specular interpretation of socialisation suggests how the academic discipline of sociology could further its epistemic intent by critically studying the specular indices of social structures: hence the prospect of a specular sociology. Therein this …
-
Sparkle vision : seeing the world through random specular microfacets
… a single image of an object covered with random specular microfacets on the surface. Such a reflector can be interpreted as a randomized mapping from the lighting to the image. This intrinsic randomness makes it challenging for humans to interpret the image of a specular surface. We propose a …
-
Synthetic aperture radar discrimination of diffuse and specular target returns
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
-
The eyewitness in American specular narrative : empiricism, representation, and the gaze
In this dissertation, I investigate American specular narrative which displays a significant level of visual empiricism and examine the implications of the eyewitness perspective such narrative assumes. Based on the epistemological assumption that "to see is to know," specular narrative imagines an …
-
Radiative characteristics of spherical cavities having partially or completely specular walls
… an isothermal spherical cavity having diffuse-specular walls is solved and the distribution of the local heat transfer for various opening angles and surface emissivities is obtained. Subsequently, the overall emission from the cavity (i. e., the apparent emissivity of the cavity) is calculated …
-
Multi-bounce Returns for Specular Surface Mapping from Consumer-grade Flash LiDAR
… of a flash LiDAR on portable smartphones for 3D specular surface reconstruction. This is an important research problem as most traditional LiDAR systems fail to detect specular surfaces. As mirror and glass are everywhere, vision systems failing to detect specular surface can be detrimental. …
-
Circumferential Three-Dimensional Profiling with Specular Micro-Texture Photometry for Dark Objects
… (3D) profiling for dark objects by investigating specular micro-texture 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 …
-
Recognition and Orientation of Specular Objects from the Analysis of Plane Polarised Light
… and to determine the orientation of dark, specular, dielectric objects. The system uses three images of an object viewed through a plane polarising filter at different rotations.<br/><br/>The objects are described by their Extended Gaussian Images (EGIs). The process always provides a …
-
ML-CHIEFS: machine learning-based corneal-specular highlight imaging for enhancing facial recognition security
… ML-CHIEFS: Machine Learning-based Corneal-specular Highlight Imaging for Enhancing Facial Recognition Security, we researched and developed unique technologies to resolve significant FRS challenges, including Deepfakes and identity thefts, liveness presentation attacks (PA), and master face …
-
Numerical study on the validity of the quasi-specular and two-scale models for rough surface parameter estimation: one dimensional surfaces
This study examines the use of the quasi-specular and two-scale models in estimating rough surface parameters from the average radar cross section of randomly rough surfaces, with the goal of understanding what scattering mechanisms limit their applicability. The ranges of validity of these models …
-
ENHANCEMENT OF A CANOPY REFLECTANCE MODEL FOR UNDERSTANDING THE SPECULAR AND SPECTRAL EFFECTS OF AN AQUATIC BACKGROUND IN AN INUNDATED TIDAL MARSH
The presence of water produces unique specular and spectral characteristics in an inundated tidal marsh canopy. The aquatic substrate can affect conventional attempts to retrieve canopy characteristics, such as structure information (e.g., canopy height, leaf area index, etc.) or plant species …
-
Slippages between the picture plane and the painting surface. An analysis, through my paintings, of specular highlights, proximal spaces and the Lacanian gaze
… research project is to examine how specular highlights and proximal spaces, when perceived through the Lacanian gaze, might confound our perception of Cartesian perspectivalism in representational painting. I will analyse and question such a combination of specific visual …
-
Geometric and Photometric Modeling of Three-Dimensional Scenes From Multiple Views
… problem. For objects composed of a homogeneous specular material, where stereo correspondence is almost impossible, we develop a method that extends the conventional shape from shading to multiple views and unknown reflectance. It is an iterative framework to solve for the 3D shape and …
-
Real-time highlight removal from a single image
… in computer vision concerning the estimation of specular reflection components and the removal thereof. In recent applications, highlight removal methods have been employed for the reproduction of specular highlights on high dynamic range (HDR) displays; to increase glossiness of images in …
-
Subjective Image Quality of CRT Displays under Ambient Glare: Assessing the ISO 9241-7 Ergonomic Technical Standard
… Image Luminance Ratio (LR BDS/FDS) and the Specular Reflection Luminance Ratio (LR BDS/BD) always passed. Conversely, negative polarity always produced Class II or Class III because the Small Source, Specular Reflection Luminance Ratio (LR BDS/BD) failed every time. Also, the AF 150 and HF …
-
Recognition and matching in the presence of deformation and lighting change
… There are certain cases like recognition of specular objects and images with arbitrary deformations where existing techniques do not perform well. For image deformation, we propose a method for faster keypoint matching with histogram descriptors and a completely deformation invariant …
-
A Numerical Investigation of Thermal Radiation Scattering From Configured and Random Surfaces
… geometrical correlation length and wavelength. Specular scattering diminishes with increasing surface heights, and the scattered energy in the specular scattering direction competes with other non-specular scattered energy when the incidence is oblique. A continuous reflection distribution is …
-
Objective Image Quality of CRT Displays under Ambient Glare: Assessing the ISO 9241-7 Ergonomic Technical Standard
… and accuracy. The ANOVA results indicate that specular glare interferes significantly more with reading time than does diffuse glare. Diffuse (200 lux) and Specular reading times also were correlated against two ISO metrics: screen image luminance ratio (Diffuse, 200 lux) and specular …
-
Reducing spectral reflections through image inpainting
… dilation, and finally the inpainting of the specular regions. This method improves on existing single pixel methods by incorporating both color and texture infilling of the specular reflections. It also works on images with no special setup or preparation.
Page 1 of 8