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    An implementation of vibration-based automatic score-keeping system for table tennis game
    (İstanbul Aydın Üniversitesi, 2014) Yavuz, Erdem; Sanver, Ufuk; Kasapbaşı, Mustafa Cem; Yazıcı, Rıfat
    In sport tournaments human factor plays an important role to evaluate the game. Table tennis is an example of this kind of sports. In order to avoid erroneous human decisions and to enhance referees’ decisions an automatic score-keeping system for table tennis game is designed and implemented with low cost vibration sensors attached underside of the tennis table. The purpose of using vibration sensors is to detect ball colliding with the surface. An additional vibration sensor is also used to detect ball touching the net, determining let state in the game. Petri net scheme is used to model the operation of the system, making it easy to visualize its operation. We believe that the proposed system will contribute much to better evaluate the various phases of table tennis games and to aid the referees to make better decisions.
  • Küçük Resim
    Öğe
    Monitoring of ırregularity on sea surface from land-taken ımages
    (IEEE, 2022) Sanver, Ufuk; Yesildirek, Aydin
    Monitoring of irregularities that will occur on the sea surface is important for environmental safety. In this study, photographs taken from the land were used to determine the irregularities on sea surface. The fact that fixed cameras placed on land and scanning the sea surface were installed in certain regions and the possibility of installing new ones has been an incentive for this study. In the study, the images created by the mucilage experienced in the Marmara Sea at the beginning of 2021 were used as the irregularity data. The authors developed an original model for this study based on traditional image processing methods. In addition, classification was made with a convolutional neural networkbased method and the results were compared.