We consider the problem of image-to-video translation, where an input image is translated into an output video containing motions of a single object. Recent methods for such problems typically train transformation networks to generate future frames conditioned on the structure sequence. Parallel work has shown that short high-quality motions can be generated by spatiotemporal generative networks that leverage temporal knowledge from the training data. We combine the benefits of both approaches and propose a two-stage generation framework where videos are generated from structures and then refined by temporal signals. To model motions more efficiently, we train networks to learn residual motion between the current and future frames, which avoids learning motion-irrelevant details. We conduct extensive experiments on two image-to-video translation tasks: facial expression retargeting and human pose forecasting. Superior results over the state-of-the-art methods on both tasks demonstrate the effectiveness of our approach.

本文提出了一个两阶段的生成框架来解决图像到视频转换的问题，其中视频从结构生成并通过时间信号进行调整。通过在面部表情重定位和人体姿势预测这两个任务中取得比现有方法优秀的结果，证明了我们方法的有效性。

学习预测和优化残差运动用于图像生成视频