Results 31 to 40 of about 1,928 (167)

Detection of human vital signs in hazardous environments by means of video magnification [PDF]

open access: yes, 2018
In cases of natural disasters, epidemics or even in dangerous situations like an act of terrorism, battle fields, a shooting or a mountain accident, finding survivors is a challenge.
Bello García, Antonio   +3 more
core   +3 more sources

Riesz pyramids for fast phase-based video magnification [PDF]

open access: yes, 2014
We present a new compact image pyramid representation, the Riesz pyramid, that can be used for real-time phase-based motion magnification. Our new representation is less overcomplete than even the smallest two orientation, octave-bandwidth complex ...
Durand, Fredo   +3 more
core   +1 more source

Towards Reading Hidden Emotions: A comparative Study of Spontaneous Micro-expression Spotting and Recognition Methods [PDF]

open access: yes, 2017
Micro-expressions (MEs) are rapid, involuntary facial expressions which reveal emotions that people do not intend to show. Studying MEs is valuable as recognizing them has many important applications, particularly in forensic science and psychotherapy ...
Hong, Xiaopeng   +6 more
core   +2 more sources

Efficient denoising approach based eulerian video magnification for colour and motion variations [PDF]

open access: yes, 2020
Digital video magnification is a computer-based microscope, which is useful to detect subtle changes to human eyes in recorded videos. This technology can be employed in several areas such as medical, biological, mechanical and physical applications ...
Al-allaq, Zaid Jabbar   +2 more
core   +3 more sources

Video Acceleration Magnification

open access: yes, 2017
The ability to amplify or reduce subtle image changes over time is useful in contexts such as video editing, medical video analysis, product quality control and sports. In these contexts there is often large motion present which severely distorts current
Pintea, Silvia L.   +2 more
core   +1 more source

Joint view expansion and filtering for automultiscopic 3D displays [PDF]

open access: yes, 2013
Multi-view autostereoscopic displays provide an immersive, glasses-free 3D viewing experience, but they require correctly filtered content from multiple viewpoints.
Didyk, Piotr   +4 more
core   +2 more sources

A Contactless Respiratory Rate Estimation Method Using a Hermite Magnification Technique and Convolutional Neural Networks

open access: yesApplied Sciences, 2020
The monitoring of respiratory rate is a relevant factor in medical applications and day-to-day activities. Contact sensors have been used mostly as a direct solution and they have shown their effectiveness, but with some disadvantages for example in ...
Jorge Brieva   +2 more
doaj   +1 more source

Visualization of Physiological Oscillations with Eulerian Video Magnification

open access: yesThe FASEB Journal, 2015
Researchers at MIT developed Eulerian Video Magnification (EVM) software that uses temporal and spatial filtering to magnify subtle changes in the environment (Wu et.al.). EVM may provide a unique method for the visualization of low frequency human physiological oscillations.
Jillian Smith   +3 more
openaire   +1 more source

Holographic laser Doppler imaging of pulsatile blood flow [PDF]

open access: yes, 2015
We report on wide-field imaging of pulsatile motion induced by blood flow using heterodyne holographic interferometry on the thumb of a healthy volunteer, in real-time.
Atlan, Michael   +4 more
core   +5 more sources

Distinguishing Posed and Spontaneous Smiles by Facial Dynamics

open access: yes, 2017
Smile is one of the key elements in identifying emotions and present state of mind of an individual. In this work, we propose a cluster of approaches to classify posed and spontaneous smiles using deep convolutional neural network (CNN) face features ...
B Mandal   +24 more
core   +1 more source

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