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About this paper

Jingjing Liu, Yinchao Han, Xianchao Xiu, Jianhua Zhang, Wanquan Liu

PICANet improves infrared small-target segmentation by guiding a network with separate spatial and contour priors, then adaptively interacting those priors with multilevel features. Its ablations indicate that prior-feature interaction adds benefit beyond supplying prior maps. On IRSTD-1k with U-Net, it reaches 70.31% mIoU, versus 67.44% for L-RPCANet; it uses more parameters and longer GPU inference time.

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