Results 11 to 20 of about 49,732,844 (278)

Cloth Representation by Shape from Shading with Shading Primitives [PDF]

open access: yes2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05), 2005
Cloth is a complex visual pattern with flexible 3D shape and illumination variations. Computing the 3D shape of cloth from a single image is of great interest to both computer graphics and vision researches. However, the acquisition of 3D cloth shape by shape from shading (SFS) is still a challenge.
Han, Feng, Zhu, Song-Chun
openaire   +3 more sources

Shape from Gradients. A psychophysical and computational study of the role complex illumination gradients, such as shading and mutual illumination, play in three-dimensional shape perception. [PDF]

open access: yes, 2013
The human visual system gathers information about three-dimensional object shape from a wide range of sources. How effectively we can use these sources, and how they are combined to form a consistent and accurate percept of the 3D world is the focus of ...
Harding, Glen
core   +4 more sources

Robust Shape from Shading [PDF]

open access: yesProcedings of the British Machine Vision Conference 1993, 1993
Existing shape from shading algorithms are not robust enough to work reliably with real images. We present a new paradigm for shape from shading based upon a scale space surface representation. Using this representation, the shape from shading problem becomes one of forming a surface from Gaussian basis functions in such a way that the shading in the ...
Jones, A. G.   +1 more
openaire   +4 more sources

Luminance contrast provides metric depth information

open access: yesRoyal Society Open Science, 2023
The perception of depth from retinal images depends on information from multiple visual cues. One potential depth cue is the statistical relationship between luminance and distance; darker points in a local region of an image tend to be farther away than
Paul B. Hibbard   +4 more
doaj   +1 more source

A Linearization–Based Hybrid Approach for 3D Reconstruction of Objects in a Single Image

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2021
The shape-from-shading (SFS) technique uses the pattern of shading in images in order to obtain 3D view information. By virtue of their ease of implementation, linearization-based SFS algorithms are frequently used in the literature.
Kotan Muhammed   +2 more
doaj   +1 more source

Shape from Shading Through Shape Evolution [PDF]

open access: yes2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2018
In this paper, we address the shape-from-shading problem by training deep networks with synthetic images. Unlike conventional approaches that combine deep learning and synthetic imagery, we propose an approach that does not need any external shape dataset to render synthetic images.
Dawei Yang, Jia Deng 0001
openaire   +3 more sources

Reconstruction of High-Frequency Lunar Digital Elevation Model using Shape from Shading [PDF]

open access: yesINCAS Bulletin, 2018
This paper deals with a procedure to reconstruct a lunar surface based on fusion of Shape from Shading with absolute depth information exploited from Lunar Orbiter Laser Altimeter data.
Min-Hyun CHO, Min-Jea TAHK
doaj   +1 more source

Automatic Detection and Classification of Defective Areas on Metal Parts by Using Adaptive Fusion of Faster R-CNN and Shape From Shading

open access: yesIEEE Access, 2022
Computer vision and deep learning approaches have an important role in industrial inspection systems. Computer vision technology is essential for fast, defect-free control of products in the production line.
Feyza Selamet   +2 more
doaj   +1 more source

STOCKPILE MONITORING USING LINEAR SHAPE-FROM-SHADING ON PLANETSCOPE IMAGERY [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The storage and management of stockpiles of materials is a fundamental process in large scale activities such as mining, civil engineering, and in the management of waste landfill sites.
M. d’Autume   +4 more
doaj   +1 more source

On the perception of shape from shading [PDF]

open access: yesPerception & Psychophysics, 1992
The extraction of three-dimensional shape from shading is one of the most perceptually compelling, yet poorly understood, aspects of visual perception. In this paper, we report several new experiments on the manner in which the perception of shape from shading interacts with other visual processes such as perceptual grouping, preattentive search ("pop ...
D A, Kleffner, V S, Ramachandran
openaire   +2 more sources

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