Results 11 to 20 of about 158,670 (292)
Volumetric Motion Magnification: Subtle Motion Extraction from 4D Data [PDF]
Measurement, 2021 Abstract The extension of Phase-based Video Motion Magnification into three-dimensions is presented in this work. The technique uses a 3D complex steerable pyramid to decompose volumetric frames of 4D dataset. The resulting decomposition can be processed to filter, amplify, or attenuate subtle motions occurring locally within the 4D data, before ...
Matthew Southwick +2 more
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STB-VMM: Swin Transformer based Video Motion Magnification
Knowledge-Based Systems, 2023 Code available at: https://github.com/RLado/STB ...
Ricard Lado-Roigé, Marco A. Pérez
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A Lightweight Dual-Stream Network with an Adaptive Strategy for Efficient Micro-Expression Recognition [PDF]
SensorsMicro-expressions (MEs), characterized by their brief duration and subtle facial muscle movements, pose significant challenges for accurate recognition.
Xinyu Liu +6 more
doaj +2 more sources
Lagrangian motion magnification with double sparse optical flow decomposition
Frontiers in Applied Mathematics and Statistics, 2023 Microexpressions are fast and spatially small facial expressions that are difficult to detect. Therefore, motion magnification techniques, which aim at amplifying and hence revealing subtle motion in videos, appear useful for handling such expressions ...
Philipp Flotho +3 more
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Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field
Brain Sciences, 2023 Biological motion perception is a specific type of perceptual organization, during which a clear image of a moving human body is perceptually generated in virtue of certain core light dots representing the major joint movements.
Ilze Ceple +4 more
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Detecting Damage Evolution of Masonry Structures through Computer-Vision-Based Monitoring Methods
Buildings, 2022 Detecting the onset of structural damage and its progressive evolution is crucial for the assessment and maintenance of the built environment. This paper describes the application of a computer-vision-based methodology for structural health monitoring to
Marialuigia Sangirardi +3 more
doaj +1 more source
Sensors, 2021 Much information can be derived from operational deflection shapes of vibrating structures and the magnification of their motion. However, the acquisition of deflection shapes usually requires a manual definition of an object’s points of interest, while ...
Adam Machynia +5 more
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Modal Shape Visualization Employing FP + 2D-DIC and Phased-Based Motion Magnification
Physical Sciences Forum, 2022 Recently, the combination of Fringe Projection (FP) and 2D Digital Image Correlation (2D-DIC) has become a low-cost alternative for measuring deformations even in dynamic events such as vibration testing.
Manuel Pastor-Cintas +4 more
doaj +1 more source
Learning-Based Video Motion Magnification [PDF]
, 2018 Video motion magnification techniques allow us to see small motions previously invisible to the naked eyes, such as those of vibrating airplane wings, or swaying buildings under the influence of the wind. Because the motion is small, the magnification results are prone to noise or excessive blurring. The state of the art relies on hand-designed filters
Oh, Tae-Hyun +6 more
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Effects of Lens Motion and Uneven Magnification on Image Spectra [PDF]
, 2015 Counter to intuition, the images of an extended galaxy lensed by a moving galaxy cluster should have slightly different spectra in any metric gravity theory. This is mainly for two reasons. One relies on the gravitational potential of a moving lens being
Banik, Indranil, Zhao, Hongsheng
core +3 more sources