Signal Processing Group (SPG)

Led by: Corneliu RUSU
Fields: Elec. Electron. Sys. & Telecom. Eng.
Institution: Technical University of Cluj-Napoca (UTCN)
Scientists/Total: 2/2
Keywords:  Adaptive filters for data echo cancellation Signal reconstruction and phase retrieval Extracting a digital elevation model from a colour-coded relief scanned map Exploration of singing voice individuality Audio based solutions for detecting intruders in wild areas
Presentation

Adaptive filters for data echo cancellation – A family of stochastic gradient algorithms and their behaviour in the data echo cancellation work platform have been studied. The cost function adaptation algorithms use an error exponent update strategy based on an absolute error mapping, which is updating at every step. Performances similar to standard variable step-size methods have been obtained.
Signal reconstruction and phase retrieval – The phase retrieval problem is to reconstruct a signal given the modulus of its Fourier transform. This problem is associated with various applications including antenna design, filter design,image reconstruction. Recent research results relate phase retrieval to properties of zero-phase sequences or trigonometric polynomials.
Extracting a digital elevation model from a colour-coded relief scanned map – The focus of the project is in extracting a digital elevation model (DEM) from a colour-coded relief scanned map. The map is pre-processed in order to remove the dithering effect that appears during the printing process. For the pre-processing we propose a WHMM based algorithm, which preserves better the thin edges than the vector median filtering.
Exploration of singing voice individuality – The human voice is the result of a complex biological mechanism. It carries out information about our thoughts, feelings, and state of health. This great amount of information of different types can be extracted and interpreted.

Infrastructures

Oscilloscope, function generator, spectral analyzer, development boards, IR camera.

Applications

Research & development in core areas
Signal Processing Group makes research in the core areas: signal reconstruction, adaptive filtering, compressive sampling, acoustic sensors, processing of signals obtained from specific sensors or from medical devices.

Research & development in applied fields
Signal Processing Group makes research in the applied fields: sensors arrays, image processing, security and protection, intruder detection and forensics.

Consulting
Signal Processing Group provides consulting in the areas of digital signal and image processing, digital filtering, optical signal processing, analysis and synthesis of computer-assisted circuits, algorithms for signal processing, numerical methods, medical electronics, sensors and devices, wireless networks.

Applied engineering services
Digital filter design, circuit simulation, and signal processing for medical applications.

Training
Digital signal processing, digital filter design, adaptive filtering, adaptive signal modeling, mathematical methods for signal processing, applied statistics, processing and recording optical information, Fourier optics.

Contact

Str. Observatorului Nr. 2, 400089
Cluj-Napoca, jud. Cluj, România
Tel: +40 264 401804
Fax: +40 264 591340
eMail: Corn...@bel.utcluj.ro

 

 

 

0 Patents or Software

 

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