Title
Quasi-Equilibrium Feature Pyramid Network for Salient Object Detection
Abstract
Modern saliency detection models are based on the encoder-decoder framework and they use different strategies to fuse the multi-level features between the encoder and decoder to boost representation power. Motivated by recent work in implicit modelling, we propose to introduce an implicit function to simulate the equilibrium state of the feature pyramid at infinite depths. We question the existence of the ideal equilibrium and thus propose a quasi-equilibrium model by taking the first-order derivative into the black-box root solver using Taylor expansion. It models more realistic convergence states and significantly improves the network performance. We also propose a differentiable edge extractor that directly extracts edges from the saliency masks. By optimizing the extracted edges, the generated saliency masks are naturally optimized on contour constraints and the non-deterministic predictions are removed. We evaluate the proposed methodology on five public datasets and extensive experiments show that our method achieves new state-of-the-art performances on six metrics across datasets.
Year
DOI
Venue
2022
10.1109/TIP.2022.3220058
IEEE Transactions on Image Processing
Keywords
DocType
Volume
Salient object detection,low-level vision
Journal
31
Issue
ISSN
Citations 
1
1057-7149
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Yue Song101.69
Hao Tang233834.83
Mengyi Zhao300.34
Nicu Sebe47013403.03
Wei Wang513114.16