Unsupervised Pre-training Across Image Domains Improves Lung Tissue Classification
The detection and classification of anomalies relevant for disease diagnosis or treatment monitoring is important during computational medical image analysis. Often, obtaining sufficient annotated training data to represent natural variability well is unfeasible. At the same time, data is frequently...
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Published in | Medical Computer Vision: Algorithms for Big Data pp. 82 - 93 |
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Main Authors | , , |
Format | Book Chapter |
Language | English |
Published |
Cham
Springer International Publishing
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Series | Lecture Notes in Computer Science |
Subjects | |
Online Access | Get full text |
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Summary: | The detection and classification of anomalies relevant for disease diagnosis or treatment monitoring is important during computational medical image analysis. Often, obtaining sufficient annotated training data to represent natural variability well is unfeasible. At the same time, data is frequently collected across multiple sites with heterogeneous medical imaging equipment. In this paper we propose and evaluate a semi-supervised learning approach that uses data from multiple sites (domains). Only for one small site annotations are available. We use convolutional neural networks to capture spatial appearance patterns and classify lung tissue in high-resolution computed tomography data. We perform domain adaptation via unsupervised pre-training of convolutional neural networks to inject information from sites or image classes for which no annotations are available. Results show that across site pre-training as well as pre-training on different image classes improves classification accuracy compared to random initialisation of the model parameters. |
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Bibliography: | Thomas Schlegl: This work has received funding from the European Union FP7 (KHRESMOI FP7-257528, VISCERAL FP7-318068), from the Austrian Science Fund (FWF P22578-B19, PULMARCH) and from the Austrian Federal Ministry of Science, Research and Economy and the National Foundation for Research, Technology and Development (OPTIMA). |
ISBN: | 9783319139715 3319139711 |
ISSN: | 0302-9743 1611-3349 |
DOI: | 10.1007/978-3-319-13972-2_8 |