TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Hensel, Stefan
A1  - Marinov, Marin B.
A1  - Sprich, Florian
T1  - Automatisierte akustische Treffererkennung auf einer Steel-Dartscheibe
T2  - Herausforderungen der Digitalen Welt: Tagungsband der 9. FDIBA Konferenz, Sofia, Bulgarien
T2  - Challenges of the Digital World: Proceedings of the 9th FDIBA Conference, Sofia, Bulgaria
N2  - Bei dem vorgestellten Ansatz soll der Auftreffpunkt des Pfeils durch die Kreuzkorrelation von Audio-Signalen bestimmt werden. Das Auftreffen des Pfeils erzeugt ein charakteristisches Geräusch, welches von mehreren Mikrofonen in bestimmter Anordnung um die Dartscheibe herum in elektrische Signale umgewandelt wird. Mithilfe der Schallgeschwindigkeit und den Zeitdifferenzen, welche die Schallwelle zu den einzelnen Mikrofonen benötigt soll dann der Auftreffpunkt berechnet werden.
N2  - In the presented approach, the impact point of the arrow is to be determined by the cross-correlation of audio signals. The impact of the arrow generates a characteristic noise, which is converted into electrical signals by several microphones in a certain arrangement around the dartboard. With the help of the speed of sound and the time differences, which the sound wave requires to the individual microphones, the impact point is then to be calculated.
Y1  - 2020
UR  - http://conference.fdiba.tu-sofia.bg/uploads/2019/Proceedings/MECH3.pdf?_t=1579553308
UR  - http://conference.fdiba.tu-sofia.bg/?page_id=509 (Tagungsband)
SN  - 2535-1338 (Online)
SS  - 2535-1338 (Online)
SN  - 2535-132X (Print)
SS  - 2535-132X (Print)
N1  - Konferenz: 9. FDIBA Konferenz, Sofia, Bulgarien, 28.–29. November 2019
VL  - 3
SP  - 75
EP  - 78
S1  - 4
PB  - TU–Sofia Publishing House
CY  - Sofia, Bulgarien
ER  - 
TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Hensel, Stefan
A1  - Marinov, Marin B.
A1  - Sprich, Florian
A1  - Ganev, Borislav
T1  - Image-Based Automated Hit Detection and Score Calculation on a Steel Dartboard
T2  - 2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)
N2  - This paper presents an approach for implementing an automated hit detection and score calculation system for a steel dartboard  using  a  standard  webcam.  First,  the  rectilinear  field  separations  of  the  dartboard  are  described  mathematically  by  means of line slopes and are than stored. These slopes serve as a basis for later score calculation. In addition, thrown darts have to be detected and the pixel at which the dart cuts the dartboard has to be determined. When this information is known, a comparison is made using the line slopes, allowing the field number of the hit to be detected. The decision for single, double or triple hit is made by  evaluating  the  defined  colors  on  the  dartboard.  All  these  functions are then packaged in a Matlab GUI.
Y1  - 2019
SN  - 978-1-7281-2098-0 (Online)
SB  - 978-1-7281-2098-0 (Online)
SN  - 978-1-7281-2096-6 (CD)
SB  - 978-1-7281-2096-6 (CD)
SN  - 978-1-7281-2099-7 (Print on Demand)
SB  - 978-1-7281-2099-7 (Print on Demand)
U6  - https://doi.org/10.1109/BLJ.2019.8883659
DO  - https://doi.org/10.1109/BLJ.2019.8883659
N1  - Second Balkan Junior Conference on Lighting, 19-21 September  2019, Plovdiv, Bulgaria
SP  - 4
S1  - 4
ER  -