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Landslide identification based on an improved YOLOv7 model: A case study of the Baige area
Received date: 2024-03-21
Revised date: 2024-06-25
Online published: 2026-06-03
Landslide identification has always been a research topic in the study of geological disasters, playing a significant role in emergency rescue and command. To address the limitations in landslide identification, such as missed/false detection, and low identification accuracy, this study proposed an improved YOLOv7 model that enables simultaneous object detection and image segmentation for landslides. The improved model optimized its core network by integrating data, adding the convolutional block attention module (CBAM), and changing the intersection over union (IoU) loss function. Its effectiveness was verified using the landslide dataset of Bijie City, Guizhou Province, and the 0.2 m high-resolution digital orthophoto map (DOM) of historical landslides in Sichuan Province. The results indicate that the improved model performed well in landslide detection and segmentation, achieving more efficient and accurate landslide identification compared to the conventional YOLOv7 model, and other prevailing models like Fast RCNN and Mask RCNN. Taking the Baige area in Sichuan Province as an example, this model can effectively enhance the automation level of landslide disaster information acquisition while improving accuracy.
LIU Haoran , YAN Tianxiao , ZHU Yueqin , WANG Yanping , CHEN Zuyi , YANG Zhaoying , ZHU Haomeng . Landslide identification based on an improved YOLOv7 model: A case study of the Baige area[J]. Remote Sensing for Natural Resources, 2025 , 37(4) : 48 -57 . DOI: 10.6046/zrzyyg.2024110
表1 各项改进的消融实验Tab.1 Various improved ablation experiments |
| 模块 | 改进策略 | 精确率/% | 召回率/% | mAP@0.5/% | |||
|---|---|---|---|---|---|---|---|
| MPDIoU | CBAM | DEM | |||||
| YOLOv7-segment | 35.2 | 83.2 | 73.4 | 75.9 | |||
| YOLOv7-segment-A | √ | 36.3 | 84.7 | 74.5 | 78.2 | ||
| YOLOv7-segment-B | √ | 36.9 | 85.1 | 75.6 | 79.5 | ||
| YOLOv7-segment-C | √ | 35.2 | 86.3 | 76.1 | 78.2 | ||
| 本文方法 | √ | √ | √ | 37.9 | 89.4 | 79.8 | 83.5 |
表2 不同算法对比Tab.2 Comparison of different algorithms |
| 算法模型 | mAP@0.5/% | 参数量/MB | GFLOPs/GB |
|---|---|---|---|
| Mask R-CNN | 75.4 | 45.8 | 66.55 |
| YOLOv5L-seg | 75.9 | 46.56 | 109.60 |
| Faster-RCNN | 70.6 | 41.00 | 241.40 |
| YOLACT | 68.7 | 47.70 | 126.80 |
| YOLOv7-seg | 79.8 | 38.27 | 143.20 |
| 本文算法 | 83.5 | 37.89 | 141.50 |
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