Results 21 to 30 of about 49,732,844 (280)
Interactions between luminance and colour signals : effects on shape [PDF]
, 2013 This research was supported by the Engineering and Physical Sciences Research Council (EPSRC).Although luminance and color are thought to be processed independently at early stages of visual processing, there is evidence that they interact at later ...
Harris, Julie +2 more
core +1 more source
Countershading Camouflage: Exploiting Photons to Break Shape-From-Shading Inference [PDF]
i-Perception, 2014 Animal camouflage is a paradigmatic example of evolution by natural selection, and can only be understood in terms of adaptation to deceive the brains of potential predators and to the environment.
O Penacchio +4 more
doaj +1 more source
SREVAS: Shading Based Surface Refinement under Varying Albedo and Specularity
Remote Sensing, 2020 Shape-from-shading and stereo vision are two complementary methods to reconstruct 3D surface from images. Stereo vision can reconstruct the overall shape well but is vulnerable in texture-less and non-Lambertian areas where shape-from-shading can recover
Zhihua Hu +3 more
doaj +1 more source
High Resolution Digital Terrain Models of Mercury
Remote Sensing, 2020 We refined our Shape from Shading (SfS) algorithm, which has previously been used to create digital terrain models (DTMs) of the Lunar and Martian surfaces, to generate high-resolution DTMs of Mercury from MESSENGER imagery.
Moritz Tenthoff +2 more
doaj +1 more source
The extraction of depth structure from shading and texture in the macaque brain. [PDF]
PLoS ONE, 2009 We used contrast-agent enhanced functional magnetic resonance imaging (fMRI) in the alert monkey to map the cortical regions involved in the extraction of 3D shape from the monocular static cues, texture and shading.
Koen Nelissen +5 more
doaj +1 more source
Frontiers in Physics, 2022 Shape-from-shading (SFS) is an important method to reconstruct three-dimensional (3D) shape of a surface in photometry and computer vision. Lambertian surface reflectance and orthographic camera projection are two fundamental assumptions which generally ...
Guohui Wang, Hao Zheng
doaj +1 more source
Depth Recovery of Complex Surfaces from Texture-less Pair of Stereo Images
ELCVIA Electronic Letters on Computer Vision and Image Analysis, 2009 In this paper, a novel framework is presented to recover the 3-D shape information of a complex surface using its texture-less pair of stereo images.
Sanjeev Kumar +4 more
doaj +1 more source
Journal of Facade Design and Engineering, 2023 Sunlight control tools, such as shading devices, are used to improve buildings' thermal and visual conditions. One of the concerns about using shading devices is their potential to harm the visual appearance of buildings.
Anwar Ibrahim +2 more
doaj +1 more source
Shape from Shading and Viscosity Solutions [PDF]
, 2002 This research report presents an approach to the shape from shading problem which is based upon the notion of viscosity solutions to the shading partial differential equation, in effect a Hamilton-Jacobi equation. The power of this approach is twofolds: 1) it allows nonsmooth, i.e. nondifferentiable, solutions which allows to recover objects with sharp
Prados, Emmanuel +2 more
openaire +3 more sources
Debris-Flow Erosion Volume Estimation Using a Single High-Resolution Optical Satellite Image
Remote SensingDebris flows pose significant risks to mountainous regions, and quick, accurate volume estimation is crucial for hazard assessment and post-disaster response.
Peng Zhang +5 more
doaj +1 more source