State-of-the-art systems for semantic image segmentation utilize feed-forward pipelines with fixed computational costs. Building an image segmentation system that works across a range of computational budgets is challenging and time-intensive as new architectures must be designed and trained for every computational setting. To address this problem we develop a recurrent neural network that successively improves prediction quality with each iteration. Importantly, the RNN may be employed across a range of computational budgets by merely running the model for varying numbers of iterations. The RNN achieves results comparable to state-of-the-art systems in image segmentation on PASCAL VOC 2012 and Cityscapes segmentation datasets, however the RNN performs this task with a fraction of the computational budget. Finally, we demonstrate how one may exploit the properties of the RNN to efficiently perform video segmentation with half the computational cost of a comparable, state-of-the-art image segmentation method.

本文提出了一种递归神经网络用于语义图像分割，该网络可在各种计算预算的范围内部署，并可用于有效地分割静态图像和视频。该方法通过利用先前帧的分割来进行视频分割，在降低计算成本的同时保持了分割质量。

变量计算预算的循环分割