Patent ID: 11972330
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A computer-implemented method (CIM) comprising:
receiving a historical loop drive ball return video recording data set, including a plurality of video recordings of historical loop drive ball returns, where a given video recording includes at least one instance of a historical table tennis player returning a table tennis ball with a loop drive technique;
determining, for at least one given video recording of historical loop drive ball returns, a set of metrics and their corresponding quantitative values corresponding to properties of the table tennis ball in the given video recording of historical loop drive ball returns, where the set of metrics includes at least three metrics, where the first metric is topspin rotation of the table tennis ball, the second metric is distance from a table tennis table edge corresponding to an opponent's side of the table tennis table, and the third metric is whether the loop drive ball return qualified as a scoring hit;
building a machine learning model to assign weights to the set of metrics corresponding to the properties of the table tennis ball in a video recording of a live loop drive ball return, where the video recording of the live loop drive ball return includes at least one instance of a live table tennis player returning the table tennis ball with the loop drive technique;
receiving the video recording of the live loop drive ball return;
determining the set of metrics and their corresponding quantitative values corresponding to the properties of the table tennis ball in the video recording of the live loop drive ball return; and
determining a quantitative loop drive ball return summary value corresponding to the properties of the table tennis ball in the video recording of the live loop drive ball return based, at least in part, on the weights assigned by the machine learning model.