Real-time 3D imaging by using color structured light based on Hilbert transform

2013 ◽  
Author(s):  
Jiping Guo ◽  
Xiang Peng ◽  
Jiping Yu ◽  
Xiaoli Liu ◽  
Ameng Li ◽  
...  
Keyword(s):  
Real Time ◽  
Hilbert Transform ◽  
3D Imaging ◽  
Structured Light

Model of multicomponent narrow-band periodical non-stationary random signal

2020 ◽  
Vol 2020 (48) ◽  
pp. 17-24
Author(s):  
I.M. Javorskyj ◽  
◽  
R.M. Yuzefovych ◽  
P.R. Kurapov ◽  
◽  
...  
Keyword(s):  
Time Series ◽  
Real Time ◽  
Hilbert Transform ◽  
Spectral Properties ◽  
Narrow Band ◽  
Analytic Signal ◽  
Random Signal ◽  
Hilbert Transformation ◽  
The Hilbert Transform

The correlation and spectral properties of a multicomponent narrowband periodical non-stationary random signal (PNRS) and its Hilbert transformation are considered. It is shown that multicomponent narrowband PNRS differ from the monocomponent signal. This difference is caused by correlation of the quadratures for the different carrier harmonics. Such features of the analytic signal must be taken into account when we use the Hilbert transform for the analysis of real time series.

Real-Time 3D Imaging using an Air-Coupled Ultrasonic Phased-Array

2020 ◽  
pp. 1-1 ◽  
Author(s):  
Gianni Allevato ◽  
Jan Hinrichs ◽  
Matthias Rutsch ◽  
Jan Adler ◽  
Axel Jager ◽  
...  
Keyword(s):  
Real Time ◽  
3D Imaging ◽  
Phased Array ◽  
Ultrasonic Phased Array

Real-time tracking of surfaces with structured light

1995 ◽  
Vol 13 (7) ◽  
pp. 585-591 ◽  
Author(s):  
Peter Lindsey ◽  
Andrew Blake
Keyword(s):  
Real Time ◽  
Structured Light ◽  
Real Time Tracking

Real-time processing framework of common-aperture active and passive hyperspectral 3D imaging

2021 ◽  
Vol 50 (2) ◽  
pp. 20200249-20200249
Author(s):  
贺文静 Wenjing He ◽  
胡坚 Jian Hu ◽  
陈育伟 Yuwei Chen ◽  
潘苗苗 Miaomiao Pan ◽  
朱运维 Yunwei Zhu ◽  
...  
Keyword(s):  
Real Time ◽  
3D Imaging ◽  
Real Time Processing ◽  
Time Processing ◽  
Processing Framework

Real-Time Sensing of Sag Geometry During GTA Welding

1997 ◽  
Vol 119 (2) ◽  
pp. 151-160 ◽  
Author(s):  
Y. M. Zhang ◽  
R. Kovacevic
Keyword(s):  
Real Time ◽  
Vision System ◽  
Structured Light ◽  
Gta Welding ◽  
Seam Tracking ◽  
Image Processing Algorithm ◽  
3D Vision ◽  
Full Penetration ◽  
Laser Stripe ◽  
Penetration Control

Seam tracking and weld penetration control are two fundamental issues in automated welding. Although the seam tracking technique has matured, the latter still remains a unique unsolved problem. It was found that the full penetration status during GTA welding can be determined with sufficient accuracy using the sag depression. To achieve a new full penetration sensing technique, a structured-light 3D vision system is developed to extract the sag geometry behind the pool. The laser stripe, which is the intersection of the structured-light and weldment, is thinned and then used to acquire the sag geometry. To reduce possible control delay, a small distance is selected between the pool rear and laser stripe. An adaptive dynamic search for rapid thinning of the stripe and the maximum principle of slope difference for unbiased recognition of sag border were proposed to develop an effective real-time image processing algorithm for sag geometry acquisition. Experiments have shown that the proposed sensor and image algorithm can provide reliable feedback information of sag geometry for the full penetration control system.

A real-time approach for heart rate monitoring using a Hilbert transform in seismocardiograms

2016 ◽  
Vol 37 (11) ◽  
pp. 1885-1909 ◽  
Author(s):  
Mojtaba Jafari Tadi ◽  
Eero Lehtonen ◽  
Tero Hurnanen ◽  
Juho Koskinen ◽  
Jonas Eriksson ◽  
...  
Keyword(s):  
Heart Rate ◽  
Real Time ◽  
Hilbert Transform ◽  
Heart Rate Monitoring
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