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Weakly supervised video object segmentation initialized with referring expression
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DOI：10.1016/j.neucom.2020.06.129.png)
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Abstract
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With the aid of one manually annotated frame, One-Shot Video Object Segmentation (OSVOS) uses a CNN architecture to tackle the problem of semi-supervised video object segmentation (VOS). However, annotating a pixel-level segmentation mask is expensive and time-consuming. To alleviate the problem, we explore a language interactive way of initializing semi-supervised VOS and run the semi-supervised methods into a weakly supervised mode. Our contributions are two folds: (i) we propose a variant of OSVOS initialized with referring expressions (REVOS), which locates a target object by maximizing the matching score between all the candidates and the referring expression; (ii) segmentation performance of semi-supervised VOS methods varies dramatically when selecting different frames for annotation. We present a strategy of the best annotation frame selection by using image similarity measurement. Meanwhile, we first to propose a multiple frame annotation selection strategy for initialization of semi-supervised VOS with more than one annotated frames. Finally we evaluate our method on DAVIS-2016 dataset, and experimental results show that REVOS achieves similar performance (79.94% measured by average IoU) compared with OSVOS (80.1%). Although current REVOS implementation is specific to the method of one-shot video object segmentation, it can be more widely applicable to other semi-supervised VOS methods. (c) 2020 Elsevier B.V. All rights reserved.
Keywords:
Video Object Segmentation
Referring Expression
Natural Language Processing
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