联合嵌入

TimeBridge：基于首尾联合嵌入与中间帧预测的自监督视频表征学习

TimeBridge: Self-Supervised Video Representation Learning via Start-End Joint Embedding and In-Between Frame Prediction

用首尾帧的联合嵌入加轻量解码器重建中间帧，把「时序变换建模」变成可复用的自监督预训练目标，可直接迁移到视频分割、部件传播等密集预测任务的特征初始化。