ISSN 1000-3665 CN 11-2202/P

    基于语义分割方法的群发性滑坡智能识别研究

    Intelligent identification of clustered landslides based on semantic segmentation method

    • 摘要: 极端降雨或地震诱发的群发性滑坡具有数量多、密度高、影响范围广、空间分布不均匀等特点。传统滑坡识别方法以遥感目视解译为主,主要依赖专业知识和滑坡前后影像纹理特征进行判识,虽识别精度较高,但很难实现快速、大范围的解译,且效率低、成本高。近年来,随着人工智能的快速发展,基于数据驱动和深度学习的语义分割方法,被广泛地运用在群发性滑坡自动识别中。以甘肃省天水市秦州区娘娘坝镇为研究区,使用谷歌卫星影像,通过目视解译,建立降雨触发滑坡样本库,共3026处;随后将整幅卫星影像裁剪成1200×1200像素大小的图片共3026张,并随机选取2526张图片作为训练集、250张图片作为验证集和250张图片作为测试集;使用该数据集对PSPnet语义分割模型进行训练。在第87000次迭代处选取最佳模型。验证集精确率、F1值、召回率和交并比分别为0.903、0.821、0.752和0.696;测试集分别为0.920、0.865、0.816和0.761。测试样本中共识别滑坡204条,误识别18条,未识别28条。基于语义分割方法的群发性滑坡智能识别模型具有较高准确率,能够准确分割不同规模和形态的滑坡,整体泛化能力和识别效果良好,可作为群发性滑坡快速精确识别提供有效解决途径。

       

      Abstract: Clustered landslides induced by earthquake and rainfall are characterized by large quantity, high frequency, uneven spatial distribution, and extensive impact areas. Traditional landslide identification relies primarily on visual interpretation of remote sensing imagery, which depends on the expertise of professionals and the analysis of pre- and post-event image textures. Although these methods can yield reasonable accuracy, they are labor-intensive and struggle to provide rapid and large-scale assessments, resulting in inefficiency and high operational costs. To date, with the rapid development of artificial intelligence, a semantic segmentation method based on data-driven and deep learning has been widely used in the automatic detection of clustered landslides. Taking Niangniangba Town, Qinzhou District, Tianshui City, Gansu Province, as a case study, this study established a comprehensive landslide inventory containing 3,026 rainfall-triggered landslides through systematic visual interpretation of Google Earth satellite imagery. The full-scene images were subsequently cropped into 3,026 patches (1,200×1,200 pixels). These patches were then stratified and randomly allocated into training (2,526), validation (250), and test sets (250). The PSPNet semantic segmentation model was employed to automatically identify rainfall-induced landslides in the study area. The model obtained at the 87,000th iteration was selected as the best model. On the validation set, the Precision, F1 score, Recall, and Intersection over Union (IoU) were 0.903, 0.821, 0.752, and 0.696, respectively. On the test set, these metrics were 0.920, 0.865, 0.816, and 0.761. Among the test samples, 204 landslides were correctly identified, 18 were falsely detected, and 28 were missed. The proposed intelligent recognition model based on semantic segmentation demonstrates high accuracy in identifying clustered landslides of varying scales and morphologies, with strong generalization capability. This approach provides an effective and efficient solution for the rapid and precise identification of clustered landslides.

       

    /

    返回文章
    返回