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An Efficient Sampling-Based Attention Network for Semantic Segmentation
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DOI：10.1109/TIP.2022.3162101.png)
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摘要
En 中文
Self-attention is widely explored to model long-range dependencies in semantic segmentation. However, this operation computes pair-wise relationships between the query point and all other points, leading to prohibitive complexity. In this paper, we propose an efficient Sampling-based Attention Network which combines a novel sample method with an attention mechanism for semantic segmentation. Specifically, we design a Stochastic Sampling-based Attention Module (SSAM) to capture the relationships between the query point and a stochastic sampled representative subset from a global perspective, where the sampled subset is selected by a Stochastic Sampling Module. Compared to self-attention, our SSAM achieves comparable segmentation performance while significantly reducing computational redundancy. In addition, with the observation that not all pixels are interested in the contextual information, we design a Deterministic Sampling-based Attention Module (DSAM) to sample features from a local region for obtaining the detailed information. Extensive experiments demonstrate that our proposed method can compete or perform favorably against the state-of-the-art methods on the Cityscapes, ADE20K, COCO Stuff, and PASCAL Context datasets.
Keyword:
Stochastic processes
Sampling methods
Semantics
Image segmentation
Computational complexity
Pattern recognition
Convolution
Semantic segmentation
stochastic sampling-based attention
deterministic sampling-based attention
期刊
IF:
13.7
论文数:
1.0W
被引数:
8.4W
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