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HRVATSKA SEKCIJA - ODJELI DRUŠTAVA

Odjel za obradu signala

Odjel za obradu signala uključuje znanstvena područja poput teorije signala i sustava, teorije i primjene kodiranja, uporabe filtara, prijenosa signala, estimacije, detekcije, analize, prepoznavanja, sinteze te reprodukcije signala digitalnim ili analognim uređajima i tehnikama. Pojam signala uključuje audio i video signale, govor, slike, komunikacije, signal sonara, radara kao i medicinske, glazbene i druge signale.

Objavljeno: 9. 12. 2016. u 16:52
Predavanje: "Fringe Projection...

Poštovane članice i članovi Hrvatske sekcije IEEE,

 

Pozivamo Vas na predavanje u organizaciji Odjela za obradu signala Hrvatske sekcije IEEE i Zavoda za elektroničke sustave i obradbu informacija koje će održati

Dr. sc. Tomislav Petković

na Fakultetu elektrotehnike i računarstva Sveučilišta u Zagrebu

u četvrtak 15. prosinca 2016. godine u 13:15 sati u Knjižnici ZESOI Fakulteta elektrotehnike i računarstva.

Naslov predavanja je:

Fringe Projection Profilometry using Color

Predavanje je otvoreno za sve zainteresirane, a posebno pozivamo studente.

Sažetak predavanja:

Fringe projection profilometry is a non-destructive 3D surface reconstruction technique. It utilizes a projector and a camera. The projector projects a sinusoidal fringe onto an object of interest. The projected pattern is deformed by the object's surface and is recorded by a camera. Recovery of the phase from the observed pattern enables the reconstruction of object's surface profile via triangulation.

In this talk we will first give a brief introduction to 3D surface scanning with an emphasis placed on sinusoidal fringe projection profilometry. We will give a short overview of commonly used sinusoidal fringe patterns and how the 3D surface profile is recovered from the phase of the projected fringe.

Next, a recently published method for single-shot dense 3D reconstruction using colored structured light will be presented. 3D scanning using color is a difficult problem due to the undesired effects of ambient lighting, object albedo, non-equal channel gains, and channel cross-talk. Using the self-equalizing De Bruijn sequence to construct the SL pattern followed by scalespace analysis and band-pass complex Hilbert filters to process the pattern achieves insensitivity to ambient lighting, object albedo, and non-equal channel gains. This novel single-shot 3D scanning method reconstructs about 85% of points compared to time-multiplexing SL strategies without increasing the decoding error in the recovered projector coordinate which is less than one projector pixel for about 90% of reconstructed 3D points.

 

Životopis predavača:

Tomislav Petković received his Dipl. Eng. in Electrical Engineering in 2002, MSc in Electronics in 2006, and PhD in Electronics in 2010, all from the University of Zagreb. Since 2002, he has been a research and teaching assistant at the Department of Electronic Systems and Information Processing at the Faculty of Electrical Engineering and Computing, University of Zagreb. He is currently working as a postdoctoral researcher on the Croatian Science Foundation project “A low-cost automated system to measure the three-dimensional shape of trunk surface”. His research interests include image processing and analysis with application in medicine and 3D scanning.

Zvonko Kostanjčar
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Mandatno razdoblje
do 31. 12. 2017.
 
 
Zvonko Kostanjčar
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Goran Molnar
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