Deep neural networks have largely failed to effectively utilize synthetic data when applied to real images due to the covariate shift problem. In this paper, we show that by applying a straightforward modification to an existing photorealistic style transfer algorithm, we achieve state-of-the-art synthetic-to-real domain adaptation results. We conduct extensive experimental validations on four synthetic-to-real tasks for semantic segmentation and object detection, and show that our approach exceeds the performance of any current state-of-the-art GAN-based image translation approach as measured by segmentation and object detection metrics. Furthermore we offer a distance based analysis of our method which shows a dramatic reduction in Frechet Inception distance between the source and target domains, offering a quantitative metric that demonstrates the effectiveness of our algorithm in bridging the synthetic-to-real gap.

通过对于一种现有的照片风格转换算法进行简单的修改，本文展示了应用于真实图像时的深度神经网络有效利用合成数据的方法，提高了合成图像到真实图像的领域适应性。我们在语义分割和物体检测的四个合成到真实的任务上进行了广泛的实验验证，展示了我们的方法在基于分割和物体检测的度量方面超越了任何当前的基于GAN的图像翻译方法的性能。此外，我们还通过距离分析方法，展示了我们的算法在缩小他们之间距离并且将合成数据转换为真实数据方面得到的显著效果。

域风格迁移：一种强而简单的合成到真实图像域自适应基准线