DeepMerge: Deep-Learning-Based Region-Merging for Image Segmentation

• URL: http://arxiv.org/abs/2305.19787v2
• Date: Fri, 5 Jan 2024 10:29:59 GMT
• Title: DeepMerge: Deep-Learning-Based Region-Merging for Image Segmentation
• Authors: Xianwei Lv and Claudio Persello and Wangbin Li and Xiao Huang and Dongping Ming and Alfred Stein
• Abstract summary: We propose a deep-learning-based region merging method dubbed DeepMerge to handle the segmentation of complete objects in large VHR images. This is the first method to use deep learning to learn the similarity and merge similar adjacent super-pixels in RAG. DeepMerge achieves the highest F value (0.9550) and the lowest total error TE (0.0895), correctly segmenting objects of different sizes and outperforming all competing segmentation methods.
• Score: 7.063322114865965
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Image segmentation aims to partition an image according to the objects in the scene and is a fundamental step in analysing very high spatial-resolution (VHR) remote sensing imagery. Current methods struggle to effectively consider land objects with diverse shapes and sizes. Additionally, the determination of segmentation scale parameters frequently adheres to a static and empirical doctrine, posing limitations on the segmentation of large-scale remote sensing images and yielding algorithms with limited interpretability. To address the above challenges, we propose a deep-learning-based region merging method dubbed DeepMerge to handle the segmentation of complete objects in large VHR images by integrating deep learning and region adjacency graph (RAG). This is the first method to use deep learning to learn the similarity and merge similar adjacent super-pixels in RAG. We propose a modified binary tree sampling method to generate shift-scale data, serving as inputs for transformer-based deep learning networks, a shift-scale attention with 3-Dimension relative position embedding to learn features across scales, and an embedding to fuse learned features with hand-crafted features. DeepMerge can achieve high segmentation accuracy in a supervised manner from large-scale remotely sensed images and provides an interpretable optimal scale parameter, which is validated using a remote sensing image of 0.55 m resolution covering an area of 5,660 km^2. The experimental results show that DeepMerge achieves the highest F value (0.9550) and the lowest total error TE (0.0895), correctly segmenting objects of different sizes and outperforming all competing segmentation methods.

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