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Freezing front velocity estimation using image processing techniques
(Elsevier B.V., 2020-02)
Freeze concentration is a promising water purification technology due to its low energy consumption when compared with traditional procedures such as evaporation. Crystal growth velocity is an important parameter for the ...
A non-contact heart rate estimation method using video magnification and neural networks
(Institute of Electrical and Electronics Engineers Inc., 2020-06)
Heart rate (HR) monitoring is a significant task in many medical, sports and aged care in assisted living applications, among other disciplines. In the literature, several works have reported effectiveness in addressing ...
A fast and bio-inspired optical flow approach in cardiac MRI sequences
(Institute of Electrical and Electronics Engineers Inc., 2018)
In this paper we present a fast and bio-inspired optical flow estimation method. It uses the Steered Hermite transform into an optimized Horn and Schunck approach. We tested the proposal method in cardiac MRI sequences of ...
Video motion magnification for monitoring of vital signals using a perceptual model
(SPIESociety of Photo-optical Instrumentation Engineers, 2017)
In this paper we present an Eulerian motion magnification technique using a spatial decomposition based on the Steered Hermite Transform (SHT) which is inspired in the Human Vision System (HVS). We test our method in one ...
Heart rate estimation using Hermite transform video magnification and deep learning
(Institute of Electrical and Electronics Engineers Inc., 2018)
Monitoring of heart rate can be used in many medical and sports applications. Lack of portability and connection problems make traditional monitoring methods difficult to use outside of clinical environments. The computer ...
Distance estimation using a bio-inspired optical flow atrategy applied to neuro-robotics
(Institute of Electrical and Electronics Engineers Inc., 2018)
Movement detection and characterization of a 3D scene are relevant tasks in vision systems and particularly in robotic applications controlled by visual features. One of the challenges to characterize a 3D scene in navigation ...
Non-contact breathing rate monitoring system based on a Hermite video magnification technique
(SPIE, 2018)
In this paper we present a new non-contact strategy to estimate the breathing rate based on the Eulerian motion magnification technique and a system based on di€erent images processing steps. After the magnification ...
Segmentation and motion estimation applied to fetal heart analysis using a multi-texture active appearance model and an optical flow approach
(SPIE, 2018)
In this work we present a combination of segmentation and motion estimation methods applied to left ventricle evaluation in fetal echocardiographic images which are used for prenatal diagnosis. In our proposed scheme, ...
Image analysis applied to a freeze-concentration water purification system
(IMEKO-International Measurement Federation Secretariat, 2018-02)
Freeze concentration is a promising water purification technology, specially due to the low levels of energy consumption when compared with other processes such as evaporation. Nevertheless, its development is still at ...
Mobile robot with movement detection controlled by real-time optical flow hermite transform
(Springer International Publishing, 2016)
This chapter presents a new algorithm inspired in the human visual system to compute optical flow in real-time based on the Hermite Transform. This algorithm is applied in a vision-based control system for a mobile robot. ...