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arXiv 2006.10380cs.CV
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基于失真感知特征校正的视频语义分割

Video Semantic Segmentation with Distortion-Aware Feature Correction

University of Science and Technology of China(中国科学技术大学)

Jiafan Zhuang, Zilei Wang, Bingke Wang

摘要:

得益于图像语义分割的巨大进步,视频语义分割近年来十分活跃。对于这样的任务,由于高计算成本,逐帧图像分割在实践中通常是不可接受的。为了解决这个问题,许多作品使用基于流的特征传播来重用先前帧的特征。然而,光流的估计不可避免地遭受不准确,从而导致传播的特征失真。在本文中,我们提出了失真感知的特征校正,以缓解这个问题,它提高了视频分割的性能,通过纠正失真的传播功能。具体而言,我们首先提出将失真模式从特征转移到图像空间,并进行有效的失真图预测。在变形图的指导下,提出了特征校正模块(FCM)对变形区域中的传播特征进行校正。我们提出的方法可以显着提高视频语义分割的准确性在一个较低的价格。在Cityscapes和CamVid上的大量实验结果表明,我们的方法优于最近的最先进的方法。

英文摘要:

Video semantic segmentation is active in recent years benefited from the great progress of image semantic segmentation. For such a task, the per-frame image segmentation is generally unacceptable in practice due to high computation cost. To tackle this issue, many works use the flow-based feature propagation to reuse the features of previous frames. However, the optical flow estimation inevitably suffers inaccuracy and then causes the propagated features distorted. In this paper, we propose distortion-aware feature correction to alleviate the issue, which improves video segmentation performance by correcting distorted propagated features. To be specific, we firstly propose to transfer distortion patterns from feature into image space and conduct effective distortion map prediction. Benefited from the guidance of distortion maps, we proposed Feature Correction Module (FCM) to rectify propagated features in the distorted areas. Our proposed method can significantly boost the accuracy of video semantic segmentation at a low price. The extensive experimental results on Cityscapes and CamVid show that our method outperforms the recent state-of-the-art methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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