In this paper, we consider the instance segmentation task on a long-tailed dataset, which contains label noise, i.e., some of the annotations are incorrect. There are two main reasons making this case realistic. First, datasets collected from real world usually obey a long-tailed distribution. Second, for instance segmentation datasets, as there are many instances in one image and some of them are tiny, it is easier to introduce noise into the annotations. Specifically, we propose a new dataset, which is a large vocabulary long-tailed dataset containing label noise for instance segmentation. Furthermore, we evaluate previous proposed instance segmentation algorithms on this dataset. The results indicate that the noise in the training dataset will hamper the model in learning rare categories and decrease the overall performance, and inspire us to explore more effective approaches to address this practical challenge. The code and dataset are available in https://github.com/GuanlinLee/Noisy-LVIS.

本文考虑了在包含标签噪声的长尾数据集上的实例分割任务，并提出了一个新的数据集，该数据集是一个包含标签噪声的大型词汇长尾数据集，结果表明训练集中的噪声将阻碍模型学习稀有类别，并降低整体性能，从而激发我们探索有效解决这个实际挑战的方法。

长尾有噪标注实例分割基准测试（简版）