BASNet: Boundary-Aware Salient Object Detection

Deep Convolutional Neural Networks have been adopted for salient object detection and achieved the state-of-the-art performance. Most of the previous works however focus on region accuracy but not on the boundary quality. In this paper, we propose a predict-refine architecture, BASNet, and a new hybrid loss for Boundary-Aware Salient object detection. Specifically, the architecture is composed of a densely supervised Encoder-Decoder network and a residual refinement module, which are respectively in charge of saliency prediction and saliency map refinement. The hybrid loss guides the network to learn the transformation between the input image and the ground truth in a three-level hierarchy -- pixel-, patch- and map- level -- by fusing Binary Cross Entropy (BCE), Structural SIMilarity (SSIM) and Intersection-over-Union (IoU) losses. Equipped with the hybrid loss, the proposed predict-refine architecture is able to effectively segment the salient object regions and accurately predict the fine structures with clear boundaries. Experimental results on six public datasets show that our method outperforms the state-of-the-art methods both in terms of regional and boundary evaluation measures. Our method runs at over 25 fps on a single GPU. The code is available at: https://github.com/NathanUA/BASNet.

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Results from the Paper


Task Dataset Model Metric Name Metric Value Global Rank Uses Extra
Training Data
Benchmark
Camouflaged Object Segmentation CAMO BASNet MAE 0.159 # 13
Weighted F-Measure 0.413 # 13
S-Measure 0.618 # 12
Camouflaged Object Segmentation COD BASNet MAE 0.092 # 10
Weighted F-Measure 0.352 # 10
S-Measure 0.685 # 10
Dichotomous Image Segmentation DIS-TE1 BASNet max F-Measure 0.688 # 8
weighted F-measure 0.595 # 7
MAE 0.084 # 8
S-Measure 0.754 # 8
E-measure 0.801 # 7
HCE 220 # 6
Dichotomous Image Segmentation DIS-TE2 BASNet max F-Measure 0.755 # 8
weighted F-measure 0.668 # 6
MAE 0.084 # 6
S-Measure 0.786 # 8
E-measure 0.836 # 7
HCE 480 # 7
Dichotomous Image Segmentation DIS-TE3 BASNet max F-Measure 0.785 # 8
weighted F-measure 0.696 # 10
MAE 0.083 # 10
S-Measure 0.798 # 9
E-measure 0.856 # 10
HCE 948 # 7
Dichotomous Image Segmentation DIS-TE4 BASNet max F-Measure 0.780 # 8
weighted F-measure 0.693 # 7
MAE 0.091 # 7
S-Measure 0.794 # 8
E-measure 0.848 # 7
HCE 3601 # 7
Dichotomous Image Segmentation DIS-VD BASNet max F-Measure 0.731 # 8
weighted F-measure 0.641 # 7
MAE 0.094 # 7
S-Measure 0.768 # 8
E-measure 0.816 # 9
HCE 1402 # 7
RGB Salient Object Detection DUT-OMRON BASNet MAE 0.056 # 12
RGB Salient Object Detection DUTS-TE BASNet MAE 0.047 # 16
S-Measure 0.876 # 11
mean E-Measure 0.896 # 7
mean F-Measure 0.823 # 7
RGB Salient Object Detection ECSSD BASNet MAE 0.037 # 10
RGB Salient Object Detection HKU-IS BASNet MAE 0.032 # 11
RGB Salient Object Detection PASCAL-S BASNet MAE 0.076 # 11
RGB Salient Object Detection SOC BASNet S-Measure 0.841 # 3
mean E-Measure 0.864 # 3
Average MAE 0.092 # 3
RGB Salient Object Detection SOD BASNet MAE 0.114 # 3

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