Results 71 to 80 of about 1,126 (166)

VAE+DDPG: An Attention‐Enhanced Variational Autoencoder for Deep Reinforcement Learning‐Based Autonomous Navigation in Low‐Light Environments

Advanced Intelligent Systems, Volume 8, Issue 5, May 2026.
Variational Autoencoder+Deep Deterministic Policy Gradient addresses low‐light failures of infrared depth sensing for indoor robot navigation. Stage 1 pretrains an attention‐enhanced Variational Autoencoder (Convolutional Block Attention Module+Feature Pyramid Network) to map dark depth frames to a well‐lit reconstruction, yielding a 128‐D latent code ...
Uiseok Lee, Chanhong Hwang, Hyunseok Kang, Yechan Park, Hangwoo Jin, Tuan Anh Nguyen, Eunmi Choi, Dugki Min   +7 more
wiley   +1 more source

Detail-Aware Uncalibrated Photometric Stereo

ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023
Photometric stereo is the problem of jointly inferring the 3D reconstruction, reflectance, lighting and specularities of an object from a set of visual signals. Recently, some variational, uncalibrated, unsupervised and unified formulations have provided robust solutions to the problem while reducing the prior knowledge about the shape geometry or the ...
openaire   +2 more sources

Optical Flow Enables Hand Tracking With EyeGlove Low‐Cost Cameras in Confined Environments

Advanced Intelligent Systems, Volume 8, Issue 5, May 2026.
A cost‐effective (<£150) hand‐wearable stereo vision system, EyeGlove, is proposed to support visual inspection in confined environments. The system integrates disjointed low‐cost cameras to enable dexterous camera manipulation and wearable display unit for real‐time interaction.
Erhui Sun, Xin Dong, Dragos Axinte, Andy Norton   +3 more
wiley   +1 more source

Circulatory pro‐CTSD binds brain endothelial LRP1 to trigger its lysosomal degradation leading to amyloid beta clearance deficit in Alzheimer's disease mice

Alzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Clearance of cerebral Aβ was primarily mediated by the brain endothelial transporters including LRP1. The regulatory mechanism of LRP1 expression remained unclear. METHODS LRP1 in brain endothelial cells treated with pro‐CTSD were analyzed by western blot.
Zhi‐Jun Li, Zhao Yang, Dan Zhao, Yi‐Hua Qiu, Wen‐Yu Wan, Zeng‐Kang Huang, Li Tian, Rui‐Qun Qi, Hong‐Guang Liu, Yu‐Hua Chen, Dong‐Yu Min, Xiao‐Qian Xu, Wei‐Dong Zhao   +12 more
wiley   +1 more source

Photometric Stereo With Area Light for Object-Level Surface Reconstruction

IEEE Access
A traditional photometric stereo method estimates surface normals with point lights placed at infinity, suffering from geometric errors when the light has a planar shape and is near the object. Though the light sampling approach improves the accuracy, it
Jun Young Yoon, Joo Ho Lee
doaj   +1 more source

3D Hair Reconstruction From Sketches Using Strand and Depth Maps

Computer Animation and Virtual Worlds, Volume 37, Issue 3, May/June 2026.
Overview of the proposed sketch‐based 3D hair reconstruction pipeline. Given a user‐drawn line drawing and a hair‐region mask, our method generates two intermediate representations: A strand map that encodes hair flow, computed by diffusing stroke directions using diffusion curves, and a depth map estimated using ControlNet.
Ritsuki Ishiwata, Syuhei Sato, Shun Tatsukawa   +2 more
wiley   +1 more source

Differentiable Display Photometric Stereo

2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
Photometric stereo leverages variations in illumination conditions to reconstruct surface normals. Display photometric stereo, which employs a conventional monitor as an illumination source, has the potential to overcome limitations often encountered in bulky and difficult-to-use conventional setups.
Seokjun Choi, Seungwoo Yoon, Giljoo Nam, Seungyong Lee 0001, Seung-Hwan Baek   +4 more
openaire   +2 more sources

A Robust Method for 2.5D Face Reconstruction Accelerated by GPU

工程科学与技术, 2009
:A robust method for 2.5D facial shape and texture reconstruction based-on the model of polyhedron and the technology of photometric stereo was presented. Using the continuity restrictions and error-reduced operator, the presented method can overcome the
Zhang Jun, Yi Cheng, Wang Bangping, Li Xiaofeng   +3 more
doaj  

Average surface roughness evaluation using 3-source photometric stereo technique

International Journal of Metrology and Quality Engineering, 2016
This paper presents a technique for measuring surface roughness (Ra), using photometric stereo method. The method utilizes three or more images of the measured surface from the same viewpoint, taken sequentially under different illumination conditions ...
Somthong Thammarat, Yang Qingping
doaj   +1 more source

On Generating Synthetic Datasets for Photometric Stereo Applications

Computers
The mathematical model for photometric stereo makes several restricting assumptions, which are often not fulfilled in real-life applications. Specifically, an object surface does not always satisfies Lambert’s cosine law, leading to reflection issues ...
Elisa Crabu, Giuseppe Rodriguez
doaj   +1 more source