Methods › General › Attention Mechanisms › FcaNet
Frequency channel attention networks
FcaNet
Introduced by Zequn Qin et al. in FcaNet: Frequency Channel Attention Networks
archive 2025-07-28 Description, source and code snippet are the archive's method entry.
FCANet contains a novel multi-spectral channel attention module. Given an input feature map X ∈ℝ^(C ×H ×W), multi-spectral channel attention first splits X into many parts xⁱ ∈ℝ^(C′ ×H ×W). Then it applies a 2D DCT to each part xⁱ. Note that a 2D DCT can use pre-processing results to reduce computation. After processing each part, all results are concatenated into a vector. Finally, fully connected layers, ReLU activation and a sigmoid are used to get the attention vector as in an SE block. This can be formulated as: s = F_(fca)(X, θ) = σ(W₂ δ(W₁[(DCT(Group(X)))])) Y = s X where Group(·) indicates dividing the input into many groups and DCT(·) is the 2D discrete cosine transform.
This work based on information compression and discrete cosine transforms achieves excellent performance on the classification task.
Papers archive 2025-07-28
2 shown of 2, newest first. Repository counts are the archive's code-links table. A Syntology line states what Syntology ran from that paper's harvested code; it is per sample and not a correctness claim.
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OrthoNets: Orthogonal Channel Attention Networks 6 Nov 2023 · 1 repository · arXiv:2311.03071
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FcaNet: Frequency Channel Attention Networks 22 Dec 2020 · 7 repositories · arXiv:2012.11879
Tasks archive 2025-07-28
6 tasks the archive attaches to papers tagged with this method, by distinct papers. A task without a page in the catalog is plain text.
| Task | Papers |
|---|---|
| Image Classification | 1 |
| Instance Segmentation | 1 |
| Object Detection | 1 |
| Semantic Segmentation | 1 |
| image-classification | 1 |
| object-detection | 1 |
Usage over time archive 2025-07-28
Components: the archive holds no method-to-method composition, so PwC's Components table cannot be rebuilt; the Papers list carries no Results column for the same reason (the archive does not join its leaderboard rows to method tags).
Categories archive 2025-07-28
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