Related papers: BlurBall: Joint Ball and Motion Blur Estimation for Table Tennis Ball Tracking

BlurBall: Joint Ball and Motion Blur Estimation for Table Tennis Ball Tracking

URL: http://arxiv.org/abs/2509.18387v1
Date: Mon, 22 Sep 2025 20:16:50 GMT
Title: BlurBall: Joint Ball and Motion Blur Estimation for Table Tennis Ball Tracking
Authors: Thomas Gossard, Filip Radovic, Andreas Ziegler, Andrea Zell,
Abstract summary: Motion blur reduces the clarity of fast-moving objects, posing challenges for detection systems.<n>This paper introduces a new labeling strategy that places the ball at the center of the blur streak and explicitly annotates blur attributes.<n>We also introduce BlurBall, a model that jointly estimates ball position and motion blur attributes.
Score: 7.933039558471408
License: http://creativecommons.org/licenses/by-sa/4.0/
Abstract: Motion blur reduces the clarity of fast-moving objects, posing challenges for detection systems, especially in racket sports, where balls often appear as streaks rather than distinct points. Existing labeling conventions mark the ball at the leading edge of the blur, introducing asymmetry and ignoring valuable motion cues correlated with velocity. This paper introduces a new labeling strategy that places the ball at the center of the blur streak and explicitly annotates blur attributes. Using this convention, we release a new table tennis ball detection dataset. We demonstrate that this labeling approach consistently enhances detection performance across various models. Furthermore, we introduce BlurBall, a model that jointly estimates ball position and motion blur attributes. By incorporating attention mechanisms such as Squeeze-and-Excitation over multi-frame inputs, we achieve state-of-the-art results in ball detection. Leveraging blur not only improves detection accuracy but also enables more reliable trajectory prediction, benefiting real-time sports analytics.

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