Video based Swimming Analysis for Fast Feedback
| Autor: | Mikko-Jussi Laakso, Jukka Heikkonen, Antti Kauhanen, Csaba Raduly-Baka, Paavo Nevalainen |
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| Rok vydání: | 2016 |
| Předmět: |
ta113
business.product_category Computer science business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 0211 other engineering and technologies 02 engineering and technology 021001 nanoscience & nanotechnology Signal Software Match moving 021105 building & construction Key (cryptography) Calibration Computer vision Artificial intelligence Underwater ta315 0210 nano-technology business Camera resectioning Digital camera |
| Zdroj: | ICPRAM |
| DOI: | 10.5220/0005753704570466 |
| Popis: | This paper proposes a digital camera based swimming analysis system for athletic use with a low budget. The recreational usage is possible during the analysis phase, and no alterations of the pool environment are needed. The system is of minimum complexity, has a real-time feedback mode, uses only underwater cameras, is flexible and can be installed in many types of public swimming pools. Possibly inaccurate camera placement poses no problem. Both commercially available and tailor made software were utilized for video signal collection and computational analysis and for providing a fast visual feedback for swimmers to improve the athletic performance. The small number of cameras with a narrow overlapping view makes the conventional stereo calibration inaccurate and a direct planar calibration method is proposed in this paper instead. The calibration method is presented and its accuracy is evaluated. The quick feedback is a key issue in improving the athletic performance. We have developed two indicators, which are easy to visualize. The first one is the swimming speed measured from the video signal by tracking a marker band at the waist of the swimmer, another one is the rudimentary swimming cycle analysis focusing to the regularity of the cycle. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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