Results 31 to 40 of about 1,275,998 (334)

Region-by-Region Registration Combining Feature-Based and Optical Flow Methods for Remote Sensing Images

open access: yesRemote Sensing, 2021
While geometric registration has been studied in remote sensing community for many decades, successful cases are rare, which register images allowing for local inconsistency deformation caused by topographic relief.
Ruitao Feng   +3 more
doaj   +1 more source

Direct Integration of Micromachined Pipettes in a Flow Channel for Single DNA Molecule Study by Optical Tweezers [PDF]

open access: yes, 2001
We have developed a micromachined flow cell consisting of a flow channel integrated with micropipettes. The flow cell is used in combination with an optical trap setup (optical tweezers) to study mechanical and structural properties of λ-DNA molecules ...
Bennink, Martin L.   +11 more
core   +2 more sources

On Benchmarking Optical Flow [PDF]

open access: yesComputer Vision and Image Understanding, 2001
Summary: Evaluating the performance of optical flow algorithms has been difficult because of the lack of ground truth data sets for complex scenes. We present a new method for generating motion fields from real sequences containing polyhedral objects and present a test suite for benchmarking optical flow algorithms consisting of complex synthetic ...
McCane, B.   +3 more
openaire   +2 more sources

Learning Multi-human Optical Flow [PDF]

open access: yesInternational Journal of Computer Vision, 2020
AbstractThe optical flow of humans is well known to be useful for the analysis of human action. Recent optical flow methods focus on training deep networks to approach the problem. However, the training data used by them does not cover the domain of human motion.
Ranjan, A.   +5 more
openaire   +4 more sources

Deep Optical Flow Supervised Learning With Prior Assumptions

open access: yesIEEE Access, 2018
Traditional methods for estimating optical flow use variational model that includes data term and smoothness term, which can build a constraint relationship between two adjacent images and optical flow.
Xuezhi Xiang   +4 more
doaj   +1 more source

High-Accuracy and Low-Latency Tracker for UAVs Monitoring Tibetan Antelopes

open access: yesRemote Sensing, 2023
As the habitat areas of Tibetan antelopes usually exhibit poaching and unpredictable risks, combining target recognition and tracking with intelligent Unmanned Aerial Vehicle (UAV) technology is necessary to obtain the real-time location of injured ...
Wei Luo   +10 more
doaj   +1 more source

A Dense Optical Flow Field Estimation with Variational Refinement

open access: yesJournal of Engineering Technology and Applied Physics, 2019
Optical flow has long been a focus of research study in computer vision community. Researchers have established extensive work to solve the optical flow estimation.
Wei Yong Eng   +3 more
doaj   +1 more source

Optic Flow: A History [PDF]

open access: yesi-Perception, 2021
The concept of optic flow, a global pattern of visual motion that is both caused by and signals self-motion, is canonically ascribed to James Gibson's 1950 book “ The Perception of the Visual World.” There have, however, been several other developments of this concept, chiefly by Gwilym Grindley and Edward Calvert.
openaire   +3 more sources

Motion process monitoring using optical flow–based principal component analysis-independent component analysis method

open access: yesAdvances in Mechanical Engineering, 2017
In this article, for the first time, the optical flow and principal component analysis followed independent component analysis are combined for monitoring the motion process of robotic-arm-based system.
Song Fan   +3 more
doaj   +1 more source

Optical Flow Estimation with Occlusion Detection

open access: yesAlgorithms, 2019
The dense optical flow estimation under occlusion is a challenging task. Occlusion may result in ambiguity in optical flow estimation, while accurate occlusion detection can reduce the error.
Song Wang, Zengfu Wang
doaj   +1 more source

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