Aerial Road Segmentation in the Presence of Topological Label Noise
| Autor: | Friedrich Fraundorfer, Eleonora Vig, Corentin Henry |
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| Rok vydání: | 2021 |
| Předmět: |
Photogrammetrie und Bildanalyse
road extraction Noise measurement Artificial neural network Computer science media_common.quotation_subject 0211 other engineering and technologies label noise Topology (electrical circuits) 02 engineering and technology Image segmentation satellite imagery Topology semantic segmentation aerial imagery Pattern recognition (psychology) 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Segmentation Quality (business) Noise (video) 021101 geological & geomatics engineering media_common |
| Zdroj: | ICPR |
| Popis: | The availability of large-scale annotated datasets has enabled Fully-Convolutional Neural Networks to reach outstanding performance on road extraction in aerial images. However, high-quality pixel-level annotation is expensive to produce and even manually labeled data often contains topological errors. Trading off quality for quantity, many datasets rely on already available yet noisy labels, for example from OpenStreetMap. In this paper, we explore the training of custom U-Nets built with ResNet and DenseNet backbones using noise-aware losses that are robust towards label omission and registration noise. We perform an extensive evaluation of standard and noise-aware losses, including a novel Bootstrapped DICE-Coefficient loss, on two challenging road segmentation benchmarks. Our losses yield a consistent improvement in overall extraction quality and exhibit a strong capacity to cope with severe label noise. Our method generalizes well to two other fine-grained topology delineation tasks: surface crack detection for quality inspection and cell membrane extraction in electron microscopy imagery. |
| Databáze: | OpenAIRE |
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