Abstract
Abstract. In the presented study, quality measurements were made regarding three different ping pong tables that were produced with three different materials. Measurements were made on the purpose of confirming whether the tables can be used as a match table that is in the standard of International Table Tennis Federation or not. For this confirmation, bouncing height of the table tennis ball is measured which is approved by ITTF. Average bouncing height that is required by federation standards is minimum 23 cm for free falling table tennis ball from 30 cm. In order to locate the bounce on the tables, the table tennis ball is released from 30cm in free fall with equipment was. In the meantime, 24 video frames videos were shot with a Full HD (1920 × 1080) camera. Each frame of videos that were taken is separated from each other. Each frame is analyzed and highest bounce is measured. As a result of the study, the bouncing heights of the three tables were measured as 23.04 cm, 23.33 cm, 22.91 cm for table1, for table2 and for table3 respectively.
Highlights
Table tennis is controlled by the worldwide organization International Table Tennis Federation (ITTF), founded in 1926
To control the tables for the standards of the ITFF, the 40 mmdiameter table tennis ball which has been approved by ITTF, has been dropped from 30 cm-height to the 32 points on the table
For measurements projective transformation has been used with designed grid system. This procedure has been applied for 3 tables x 3 bounce x 32 measurement points and all the images have been registered to the grid with projective transformation
Summary
Table tennis is controlled by the worldwide organization International Table Tennis Federation (ITTF), founded in 1926. The bouncing height has been measured in 0.2 mm-accuracy. In the study, according to the ITTF handbook, a mechanism has been prepared to drop the table tennis ball without spinning from the 30 cm- height.
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