Papers › PixOOD: Pixel-Level Out-of-Distribution Detection

PixOOD: Pixel-Level Out-of-Distribution Detection

30 May 2024arXiv:2405.19882archive 2025-07-28

Tomáš Vojíř, Jan Šochman, Jiří Matas

We propose a dense image prediction out-of-distribution detection algorithm, called PixOOD, which does not require training on samples of anomalous data and is not designed for a specific application which avoids traditional training biases. In order to model the complex intra-class variability of the in-distribution data at the pixel level, we propose an online data condensation algorithm which is more robust than standard K-means and is easily trainable through SGD. We evaluate PixOOD on a wide range of problems. It achieved state-of-the-art results on four out of seven datasets, while being competitive on the rest. The source code is available at https://github.com/vojirt/PixOOD.

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Out-of-Distribution Detection

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SGD

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