Title
Sar Image Classification Using Fully Connected Conditional Random Fields Combined With Deep Learning And Superpixel Boundary Constraint
Abstract
As one of the most important active remote sensing technologies, synthetic aperture radar (SAR) provides advanced advantages of all-day, all-weather, and strong penetration capabilities. Due to its unique electromagnetic spectrum and imaging mechanism, the dimensions of remote sensing data have been considerably expanded. Important for fundamental research in microwave remote sensing, SAR image classification has been proven to have great value in many remote sensing applications. Many widely used SAR image classification algorithms rely on the combination of hand-designed features and machine learning classifiers, which still experience many issues that remain to be resolved and overcome, including optimized feature representation, the fuzzy confusion of speckle noise, the widespread applicability, and so on. To mitigate some of the issues and to improve the pattern recognition of high-resolution SAR images, a ConvCRF model combined with superpixel boundary constraint is developed. The proposed algorithm can successfully combine the local and global advantages of fully connected conditional random fields and deep models. An optimizing strategy using a superpixel boundary constraint in the inference iterations more efficiently preserves structure details. The experimental results demonstrate that the proposed method provides competitive advantages over other widely used models. In the land cover classification experiments using the MSTAR, E-SAR and GF-3 datasets, the overall accuracy of our proposed method achieves 90.18 +/- 0.37, 91.63 +/- 0.27, and 90.91 +/- 0.31, respectively. Regarding the issues of SAR image classification, a novel integrated learning containing local and global image features can bring practical implications.
Year
DOI
Venue
2021
10.3390/rs13020271
REMOTE SENSING
Keywords
DocType
Volume
synthetic aperture radar, convolutional neural network, conditional random fields, pattern recognition, superpixel constraint
Journal
13
Issue
Citations 
PageRank 
2
0
0.34
References 
Authors
0
10
Name
Order
Citations
PageRank
Zhensheng Sun100.68
Miao Liu2396.28
Peng Liu300.34
Juan Li410.69
Tao Yu500.34
Xingfa Gu65436.00
Jian Yang700.68
Xiaofei Mi800.68
Weijia Cao9505.28
Zhouwei Zhang1000.68