How Important are Data Augmentations to Close the Domain Gap for Object Detection in Orbit?

• URL: http://arxiv.org/abs/2410.15766v1
• Date: Mon, 21 Oct 2024 08:24:46 GMT
• Title: How Important are Data Augmentations to Close the Domain Gap for Object Detection in Orbit?
• Authors: Maximilian Ulmer, Leonard Klüpfel, Maximilian Durner, Rudolph Triebel,
• Abstract summary: We investigate the efficacy of data augmentations to close the domain gap in spaceborne computer vision. We propose two novel data augmentations specifically developed to emulate the visual effects observed in orbital imagery.
• Score: 15.550663626482903
• License:
• Abstract: We investigate the efficacy of data augmentations to close the domain gap in spaceborne computer vision, crucial for autonomous operations like on-orbit servicing. As the use of computer vision in space increases, challenges such as hostile illumination and low signal-to-noise ratios significantly hinder performance. While learning-based algorithms show promising results, their adoption is limited by the need for extensive annotated training data and the domain gap that arises from differences between synthesized and real-world imagery. This study explores domain generalization in terms of data augmentations -- classical color and geometric transformations, corruptions, and noise -- to enhance model performance across the domain gap. To this end, we conduct an large scale experiment using a hyperparameter optimization pipeline that samples hundreds of different configurations and searches for the best set to bridge the domain gap. As a reference task, we use 2D object detection and evaluate on the SPEED+ dataset that contains real hardware-in-the-loop satellite images in its test set. Moreover, we evaluate four popular object detectors, including Mask R-CNN, Faster R-CNN, YOLO-v7, and the open set detector GroundingDINO, and highlight their trade-offs between performance, inference speed, and training time. Our results underscore the vital role of data augmentations in bridging the domain gap, improving model performance, robustness, and reliability for critical space applications. As a result, we propose two novel data augmentations specifically developed to emulate the visual effects observed in orbital imagery. We conclude by recommending the most effective augmentations for advancing computer vision in challenging orbital environments. Code for training detectors and hyperparameter search will be made publicly available.

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