Evaluation of Out-of-Distribution Detection Performance on Autonomous Driving Datasets

• URL: http://arxiv.org/abs/2401.17013v1
• Date: Tue, 30 Jan 2024 13:49:03 GMT
• Title: Evaluation of Out-of-Distribution Detection Performance on Autonomous Driving Datasets
• Authors: Jens Henriksson, Christian Berger, Stig Ursing, Markus Borg
• Abstract summary: Safety measures need to be systemically investigated to what extent they evaluate the intended performance of Deep Neural Networks (DNNs) This work evaluates rejecting outputs from semantic segmentation DNNs by applying a Mahalanobis distance (MD) based on the most probable class-conditional Gaussian distribution for the predicted class as an OOD score. The applicability of our findings will support legitimizing safety measures and motivate their usage when arguing for safe usage of DNNs in automotive perception.
• Score: 5.000404730573809
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Safety measures need to be systemically investigated to what extent they evaluate the intended performance of Deep Neural Networks (DNNs) for critical applications. Due to a lack of verification methods for high-dimensional DNNs, a trade-off is needed between accepted performance and handling of out-of-distribution (OOD) samples. This work evaluates rejecting outputs from semantic segmentation DNNs by applying a Mahalanobis distance (MD) based on the most probable class-conditional Gaussian distribution for the predicted class as an OOD score. The evaluation follows three DNNs trained on the Cityscapes dataset and tested on four automotive datasets and finds that classification risk can drastically be reduced at the cost of pixel coverage, even when applied on unseen datasets. The applicability of our findings will support legitimizing safety measures and motivate their usage when arguing for safe usage of DNNs in automotive perception.

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