@inproceedings{HenselMarinovSprichetal.2019, author = {Hensel, Stefan and Marinov, Marin B. and Sprich, Florian and Ganev, Borislav}, title = {Image-Based Automated Hit Detection and Score Calculation on a Steel Dartboard}, series = {2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)}, organization = {IEEE}, isbn = {978-1-7281-2098-0 (Online)}, doi = {10.1109/BLJ.2019.8883659}, pages = {4}, year = {2019}, abstract = {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.}, language = {en} } @inproceedings{HenselMarinovSprich2020, author = {Hensel, Stefan and Marinov, Marin B. and Sprich, Florian}, title = {Automatisierte akustische Treffererkennung auf einer Steel-Dartscheibe}, series = {Herausforderungen der Digitalen Welt: Tagungsband der 9. FDIBA Konferenz, Sofia, Bulgarien}, volume = {3}, booktitle = {Automated Acoustic Hit Detection and Score Calculation on a Steel Dartboard}, publisher = {TU-Sofia Publishing House}, address = {Sofia, Bulgarien}, issn = {2535-1338 (Online)}, pages = {75 -- 78}, year = {2020}, abstract = {Bei dem vorgestellten Ansatz soll der Auftreffpunkt des Pfeils durch die Kreuzkorrelation von Audio-Signalen bestimmt werden. Das Auftreffen des Pfeils erzeugt ein charakteristisches Ger{\"a}usch, 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 ben{\"o}tigt soll dann der Auftreffpunkt berechnet werden.}, language = {de} }