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Towards Anytime Optical Flow Estimation with Event Cameras [PDF]

open access: yesSensors
Event cameras respond to changes in log-brightness at the millisecond level, making them ideal for optical flow estimation. However, existing datasets from event cameras provide only low-frame-rate ground truth for optical flow, limiting the research ...
Yaozu Ye   +7 more
doaj   +2 more sources

Enhancing Infrared Optical Flow Network Computation through RGB-IR Cross-Modal Image Generation [PDF]

open access: yesSensors
Due to the complexity of real optical flow capture, the existing research still has not performed real optical flow capture of infrared (IR) images with the production of an optical flow based on IR images, which makes the research and application of ...
Feng Huang, Wei Huang, Xianyu Wu
doaj   +2 more sources

Advanced Monocular Outdoor Pose Estimation in Autonomous Systems: Leveraging Optical Flow, Depth Estimation, and Semantic Segmentation with Dynamic Object Removal [PDF]

open access: yesSensors
Autonomous technologies have revolutionized transportation, military operations, and space exploration, necessitating precise localization in environments where traditional GPS-based systems are unreliable or unavailable.
Alireza Ghasemieh, Rasha Kashef
doaj   +2 more sources

Piston Sensing for Golay-6 Sparse Aperture System with Double-Defocused Sharpness Metrics via ResNet-34

open access: yesSensors, 2022
In pursuit of high imaging quality, optical sparse aperture systems must correct piston errors quickly within a small range. In this paper, we modified the existing deep-learning piston detection method for the Golay-6 array, by using a more powerful ...
Senmiao Wang   +7 more
doaj   +1 more source

Optical Design of the Goaly3 Multi-Mirror Telescope System with a Wide Field of View

open access: yesApplied Sciences, 2021
A Golay3 multi-mirror telescope (MMT) system is designed in this paper. The fill factor of the Golay3 MMT is derived from the angular resolution of the telescope. An initial configuration is established according to the paraxial optical theory.
Junliu Fan   +4 more
doaj   +1 more source

Stability of Cauchy horizon in a charged de-Sitter spacetime with dark matter

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The violation of strong cosmic censorship (SCC) in RNdS black holes by a minimally coupled neutral massless scalar field has recently been discovered. This paper investigates the stability of the Cauchy horizon of a spherically charged de-Sitter black ...
Xue-Ying Nan, Jia Tan, Jie Jiang
doaj   +1 more source

Micro-expression Recognition Method Combining Feature Fusion and Attention Mechanism [PDF]

open access: yesJisuanji kexue, 2022
Micro-expression refers to an uncontrollable muscle movement on the face when people try to hide or suppress their true emotions.Due to the short duration,small motion range,and difficulty in concealing and restraining,the recognition accuracy of such ...
LI Xing-ran, ZHANG Li-yan, YAO Shu-jing
doaj   +1 more source

Optical Flow Calculating Method Based on Multi-scale V1-MT Feedforward Model [PDF]

open access: yesJisuanji gongcheng, 2017
In order to solve the problem of great computational error of optical flow information under large displacement and weak texture,an optical flow computational method based on an improved V1-MT feedforward model is proposed.By taking video sequences as ...
ZHANG Wenda,XU Yuelei,MA Shiping,LI Shuai,ZOU Hongzhong
doaj   +1 more source

A quick, reliable, and automated method for fat cell sizing

open access: yesJournal of Lipid Research, 2003
Mean diameters of fat cells from abdominal tissues from 31 volunteers were determined by three methods based on fat cell isolation after collagenase digestion and methylene blue staining.
Yourka D. Tchoukalova   +4 more
doaj   +1 more source

Detection of Human Movement Direction Using Optical Flow Analisys on Multiple Camera Angles

open access: yesJurnal Nasional Teknik Elektro, 2021
The active movement of children poses a safety risk in the absence of adult supervision. To reduce the risk of accidents in children, an automatic detection system for the direction of children's movements is crucially needed.
Elvira Sukma Wahyuni   +2 more
doaj   +1 more source

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