Refined Response Distillation for Class-Incremental Player Detection

• URL: http://arxiv.org/abs/2305.00620v1
• Date: Mon, 1 May 2023 01:49:48 GMT
• Title: Refined Response Distillation for Class-Incremental Player Detection
• Abstract summary: Existing methods assume fixed player categories, incapably accommodating the real-world scenarios where categories continue to evolve. Inspired by recent research on incremental object detection (IOD), we propose a Refined Response Distillation (R2D) method to effectively mitigate catastrophic forgetting for IOD tasks of the players. We present the NBA-IOD and Volleyball-IOD datasets as the benchmark and investigate the IOD tasks of the players systematically.
• Score: 29.764766170176905
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Detecting players from sports broadcast videos is essential for intelligent event analysis. However, existing methods assume fixed player categories, incapably accommodating the real-world scenarios where categories continue to evolve. Directly fine-tuning these methods on newly emerging categories also exist the catastrophic forgetting due to the non-stationary distribution. Inspired by recent research on incremental object detection (IOD), we propose a Refined Response Distillation (R^2D) method to effectively mitigate catastrophic forgetting for IOD tasks of the players. Firstly, we design a progressive coarse-to-fine distillation region dividing scheme, separating high-value and low-value regions from classification and regression responses for precise and fine-grained regional knowledge distillation. Subsequently, a tailored refined distillation strategy is developed on regions with varying significance to address the performance limitations posed by pronounced feature homogeneity in the IOD tasks of the players. Furthermore, we present the NBA-IOD and Volleyball-IOD datasets as the benchmark and investigate the IOD tasks of the players systematically. Extensive experiments conducted on benchmarks demonstrate that our method achieves state-of-the-art results.The code and datasets are available at https://github.com/beiyan1911/Players-IOD.

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