Temporal Feature Augmented Network for Video Instance Segmentation

In this paper, we propose a temporal feature augmented network for video instance segmentation. Video instance segmentation task can be split into two subtasks: instance segmentation and tracking. Similar to the previous work, a track head is added to an instance segmentation network to track object instances across frames. Then the network can performing detection, segmentation and tracking tasks simultaneously. We choose the Cascade-RCNN as the basic instance segmentation network. Besides, in order to make better use of the rich information contained in the video, a temporal feature augmented module is introduced to the network. When performing instance segmentation task on a single frame, information from other frames in the same video will be included and the performance of instance segmentation task can be effectively improved. Moreover, experiments show that the temporal feature augmented module can effectively alleviate the problem of motion blur and pose variation.