Results 61 to 70 of about 338,843 (200)

Novel Crossover in Coupled Spin Ladders [PDF]

open access: yes, 2017
We report a novel crossover behavior in the long-range-ordered phase of a prototypical spin-$1/2$ Heisenberg antiferromagnetic ladder compound $\mathrm{(C_7H_{10}N)_2CuBr_4}$.
Berthier, C.   +5 more
core   +4 more sources

Coding of shape from shading in area V4 of the macaque monkey

open access: yesBMC Neuroscience, 2009
Background The shading of an object provides an important cue for recognition, especially for determining its 3D shape. However, neuronal mechanisms that allow the recovery of 3D shape from shading are poorly understood.
Jouffrais Christophe   +2 more
doaj   +1 more source

Directional Ring Difference Filter for Robust Shape-from-Focus

open access: yesMathematics, 2023
In the shape-from-focus (SFF) method, the quality of the 3D shape generated relies heavily on the focus measure operator (FM) used. Unfortunately, most FMs are sensitive to noise and provide inaccurate depth maps.
Khurram Ashfaq, Muhammad Tariq Mahmood
doaj   +1 more source

MVF-Net: Multi-View 3D Face Morphable Model Regression

open access: yes, 2019
We address the problem of recovering the 3D geometry of a human face from a set of facial images in multiple views. While recent studies have shown impressive progress in 3D Morphable Model (3DMM) based facial reconstruction, the settings are mostly ...
Bao, Linchao   +7 more
core   +1 more source

Silhouette-Based 3D Face Shape Recovery [PDF]

open access: yes, 2010
The creation of realistic 3D face models is still a fundamental problem in computer graphics. In this paper we present a novel method to obtain the 3D shape of an arbitrary human face using a sequence of silhouette images as input.
Lee, Jinho   +3 more
core  

6-DoF Object Pose from Semantic Keypoints

open access: yes, 2017
This paper presents a novel approach to estimating the continuous six degree of freedom (6-DoF) pose (3D translation and rotation) of an object from a single RGB image.
Chan, Aaron   +4 more
core   +1 more source

Geometry-Aware Network for Non-Rigid Shape Prediction from a Single View [PDF]

open access: yes, 2018
We propose a method for predicting the 3D shape of a deformable surface from a single view. By contrast with previous approaches, we do not need a pre-registered template of the surface, and our method is robust to the lack of texture and partial ...
Agudo, Antonio   +5 more
core   +2 more sources

Micro Fourier Transform Profilometry ($\mu$FTP): 3D shape measurement at 10,000 frames per second

open access: yes, 2017
Recent advances in imaging sensors and digital light projection technology have facilitated a rapid progress in 3D optical sensing, enabling 3D surfaces of complex-shaped objects to be captured with improved resolution and accuracy.
Asundi, Anand   +5 more
core   +1 more source

Variational Uncalibrated Photometric Stereo under General Lighting [PDF]

open access: yes, 2019
Photometric stereo (PS) techniques nowadays remain constrained to an ideal laboratory setup where modeling and calibration of lighting is amenable. To eliminate such restrictions, we propose an efficient principled variational approach to uncalibrated PS
Cremers, Daniel   +5 more
core   +3 more sources

Zoom in to the details of human-centric videos

open access: yes, 2020
Presenting high-resolution (HR) human appearance is always critical for the human-centric videos. However, current imagery equipment can hardly capture HR details all the time.
Fang, Lu   +4 more
core   +1 more source

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