Opto-Electronic Engineering, Volume. 51, Issue 12, 240210-1(2024)
A road extraction algorithm that fuses element multiplication and detail optimization
To address the existing challenges of discontinuity in road region extraction and difficulty in extracting roads of different sizes, especially the misclassification of narrow roads, a novel road extraction algorithm combining element-wise multiplication and detail optimization was proposed. Firstly, an element-wise multiplication module (IEM module) was introduced in the encoder part to perform feature extraction, preserving and extracting multi-scale and multi-level road features. A Conv3×3 with a stride of 2 was used for twofold downsampling, reducing information loss during the extraction process of remote sensing images. The encoder-decoder was structured with five layers and utilized skip connections to maintain multi-scale extraction capabilities while improving road continuity. Secondly, PFAAM was employed to enhance the network's focus on road features. Finally, a fine residual network (RRN) was utilized to enhance the network's ability to extract boundary details, refining the boundary information. Experiments were conducted on the public road dataset of Massachusetts (CHN6-CUG) to test the network model, achieving evaluation metrics of OA (accuracy), IoU (intersection over union), mIoU (mean IoU), F1-score of 98.06% (97.19%)、64.52% (60.24%)、81.25% (78.66%), and 88.70% (86.85%). The experimental results demonstrated that the proposed method outperformed all the compared methods, effectively improving the accuracy of road segmentation.
Get Citation
Copy Citation Text
Jin Zhang, Minghai Lv, Yongan Feng, Ying Zhang. A road extraction algorithm that fuses element multiplication and detail optimization[J]. Opto-Electronic Engineering, 2024, 51(12): 240210-1
Category: Article
Received: Sep. 2, 2024
Accepted: Nov. 19, 2024
Published Online: Feb. 21, 2025
The Author Email: