Referring video object segmentation aims to segment a referent throughout a video sequence according to a natural language expression. It requires aligning the natural language expression with the objects' motions and their dynamic associations at the global video level but segmenting objects at the frame level. To achieve this goal, we propose to simultaneously maintain a global referent token and a sequence of object queries, where the former is responsible for capturing video-level referent according to the language expression, while the latter serves to better locate and segment objects with each frame. Furthermore, to explicitly capture object motions and spatial-temporal cross-modal reasoning over objects, we propose a novel temporal collection-distribution mechanism for interacting between the global referent token and object queries. Specifically, the temporal collection mechanism collects global information for the referent token from object queries to the temporal motions to the language expression. In turn, the temporal distribution first distributes the referent token to the referent sequence across all frames and then performs efficient cross-frame reasoning between the referent sequence and object queries in every frame. Experimental results show that our method outperforms state-of-the-art methods on all benchmarks consistently and significantly.

视频对象分割通过自然语言表达对视频序列中的参照物进行分割，提出了同时维护全局参照标记和一系列对象查询的方法，以实现对对象在帧级别的定位和分割，进而利用新颖的时间采集-分布机制来捕捉对象动态并进行时空交叉模态推理，实验结果表明，该方法在所有基准测试中始终显著优于最先进的方法。

指代视频对象分割的时态采集与分发