基于混合监督学习的探地雷达图像异常区域显著性增强

    Saliency Enhancement of Abnormal Regions in Ground Penetrating Radar Images Based on Hybrid Supervised Learning

    • 摘要: 复杂的介质环境下,探地雷达反射回波产生的图像成像质量较差。这些成像存在相关异常区域显著性弱、特征不易识别等问题,对视觉效果和高级计算机视觉任务的性能都造成了影响。针对这些问题,文中提出了一种基于混合监督学习的探地雷达图像异常区域显著性增强算法。该算法通过半监督子网络充分利用仿真增强图像标签让增强网络学习仿真图像分布,并利用真实图像让该网络向真实图像分布迁移;无监督子网络则将真实图像作为输入,仿真图像作为对抗样本让模型学习真实图像下的显著性增强;两个子网络可以循环训练增强网络,从而以一个统一的训练流程来实现真实探地雷达图像异常区域显著性增强。实验结果证明所提方法能有效地增强探地雷达图像中的异常区域的显著性。

       

      Abstract: In complex media environments, the quality of images produced by ground penetrating radar reflection echoes is poor. These images exhibit issues such as weak saliency of related abnormal regions and difficulty in feature identification, which affects both visual effects and the performance of advanced computer vision tasks. To address these issues, a saliency enhancement algorithm for abnormal regions in ground penetrating radar images based on hybrid supervised learning is proposed in this paper. The algorithm fully utilizes the labels of simulated enhanced images through a semi-supervised sub-network to allow the enhanced network to learn the distribution of simulated images, and uses real images to migrate the network to the distribution of real images. The unsupervised sub-network takes real images as input and uses simulated images as adversarial samples to train the model for saliency enhancement under real images. The two sub-networks can cyclically train the enhanced network, thereby achieving saliency enhancement of abnormal regions in real ground penetrating radar images with a unified training process. Experimental results show that the proposed method can effectively enhance the saliency of abnormal regions in ground penetrating radar images.

       

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