PAANet:Visual Perception based Four-stage Framework for Salient Object Detection using High-order Contrast Operator

• URL: http://arxiv.org/abs/2211.08724v1
• Date: Wed, 16 Nov 2022 07:28:07 GMT
• Title: PAANet:Visual Perception based Four-stage Framework for Salient Object Detection using High-order Contrast Operator
• Authors: Yanbo Yuan, Hua Zhong, Haixiong Li, Xiao cheng, Linmei Xia
• Abstract summary: We propose a four-stage framework for salient object detection (SOD) The first two stages match the textbfPre-textbfAttentive process consisting of general feature extraction (GFE) and feature preprocessing (FP) The last two stages are corresponding to textbfAttention process containing saliency feature extraction (SFE) and the feature aggregation (FA)
• Score: 5.147934362641464
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: It is believed that human vision system (HVS) consists of pre-attentive process and attention process when performing salient object detection (SOD). Based on this fact, we propose a four-stage framework for SOD, in which the first two stages match the \textbf{P}re-\textbf{A}ttentive process consisting of general feature extraction (GFE) and feature preprocessing (FP), and the last two stages are corresponding to \textbf{A}ttention process containing saliency feature extraction (SFE) and the feature aggregation (FA), namely \textbf{PAANet}. According to the pre-attentive process, the GFE stage applies the fully-trained backbone and needs no further finetuning for different datasets. This modification can greatly increase the training speed. The FP stage plays the role of finetuning but works more efficiently because of its simpler structure and fewer parameters. Moreover, in SFE stage we design for saliency feature extraction a novel contrast operator, which works more semantically in contrast with the traditional convolution operator when extracting the interactive information between the foreground and its surroundings. Interestingly, this contrast operator can be cascaded to form a deeper structure and extract higher-order saliency more effective for complex scene. Comparative experiments with the state-of-the-art methods on 5 datasets demonstrate the effectiveness of our framework.

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