Graph-based active learning for semi-supervised classification of SAR data
| Autor: | Kevin Miller, Jack Mauro, Jason Setiadi, Xoaquin Baca, Zhan Shi, Jeff Calder, Andrea Bertozzi |
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| Rok vydání: | 2022 |
| Předmět: |
FOS: Computer and information sciences
I.4.0 Computer Science - Machine Learning I.2.10 Computer Science - Artificial Intelligence I.2.6 Computer Vision and Pattern Recognition (cs.CV) 68R10 68T07 68T05 Image and Video Processing (eess.IV) Computer Science - Computer Vision and Pattern Recognition I.4.9 Numerical Analysis (math.NA) Electrical Engineering and Systems Science - Image and Video Processing Machine Learning (cs.LG) Artificial Intelligence (cs.AI) ComputingMethodologies_PATTERNRECOGNITION FOS: Mathematics FOS: Electrical engineering electronic engineering information engineering Mathematics - Numerical Analysis |
| Zdroj: | Algorithms for Synthetic Aperture Radar Imagery XXIX. |
| DOI: | 10.1117/12.2618847 |
| Popis: | We present a novel method for classification of Synthetic Aperture Radar (SAR) data by combining ideas from graph-based learning and neural network methods within an active learning framework. Graph-based methods in machine learning are based on a similarity graph constructed from the data. When the data consists of raw images composed of scenes, extraneous information can make the classification task more difficult. In recent years, neural network methods have been shown to provide a promising framework for extracting patterns from SAR images. These methods, however, require ample training data to avoid overfitting. At the same time, such training data are often unavailable for applications of interest, such as automatic target recognition (ATR) and SAR data. We use a Convolutional Neural Network Variational Autoencoder (CNNVAE) to embed SAR data into a feature space, and then construct a similarity graph from the embedded data and apply graph-based semi-supervised learning techniques. The CNNVAE feature embedding and graph construction requires no labeled data, which reduces overfitting and improves the generalization performance of graph learning at low label rates. Furthermore, the method easily incorporates a human-in-the-loop for active learning in the data-labeling process. We present promising results and compare them to other standard machine learning methods on the Moving and Stationary Target Acquisition and Recognition (MSTAR) dataset for ATR with small amounts of labeled data. |
| Databáze: | OpenAIRE |
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