We propose a novel method for learning convolutional neural image representations without manual supervision. We use motion cues in the form of optical flow, to supervise representations of static images. The obvious approach of training a network to predict flow from a single image can be needlessly difficult due to intrinsic ambiguities in this prediction task. We instead propose a much simpler learning goal: embed pixels such that the similarity between their embeddings matches that between their optical flow vectors. At test time, the learned deep network can be used without access to video or flow information and transferred to tasks such as image classification, detection, and segmentation. Our method, which significantly simplifies previous attempts at using motion for self-supervision, achieves state-of-the-art results in self-supervision using motion cues, competitive results for self-supervision in general, and is overall state of the art in self-supervised pretraining for semantic image segmentation, as demonstrated on standard benchmarks.

采用动态光流来监督静态图像的表示，通过学习嵌入像素以达到其光流向量之间的相似性，我们设计了一种无需手工标注的学习卷积神经图像表示的新方法，这个新方法优于以往的运用动态光流学习卷积神经网络的方法，并在语义分割等领域首屈一指。

自我监督学习的跨像素光流相似度