Video domain adaptation for semantic segmentation using perceptual consistency matching

Area of Science:

• Computer Science
• Artificial Intelligence
• Machine Learning

Background:

• Unsupervised Domain Adaptation (UDA) transfers knowledge from labeled source datasets to unlabeled target datasets.
• Video-based UDA is challenging due to complex modal features and temporal dynamics, unlike image-based UDA.
• Existing methods often rely on optical flow, which is computationally expensive and difficult to generalize across domains.

Purpose of the Study:

• To develop an effective unsupervised domain adaptation approach for video semantic segmentation.
• To address the limitations of existing methods, particularly the reliance on optical flow.
• To improve the accuracy and efficiency of knowledge transfer in video domain adaptation.

Main Methods:

• Proposes an adversarial domain adaptation approach for video semantic segmentation.
• Introduces Perceptual Consistency Matching (PCM) to align temporally associated pixels across domains without optical flow.
• Leverages perceptual similarity to identify and enforce consistency for corresponding pixels in consecutive frames.

Main Results:

• The proposed PCM strategy enhances prediction accuracy for video-UDA.
• Achieves notable performance improvements over existing state-of-the-art UDA methods on public datasets.
• Demonstrates faster inference times compared to optical flow-based approaches.

Conclusions:

• The developed approach effectively addresses the crucial task of video domain adaptation.
• PCM offers a computationally efficient and accurate alternative to optical flow for video-UDA.
• The method shows significant potential for real-world applications requiring robust video semantic segmentation.