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Solar Altitude Guided Scene Illumination

Created by
  • Haebom

Author

Samed Do\u{g}an, Maximilian Hoh, Nico Leuze, Nicolas Rodriguez Pe na, Alfred Sch ottl

Outline

This paper addresses the challenges of securing large-scale, high-quality sensor data, which is essential for ensuring the safety and robustness of autonomous driving. While research on generating synthetic camera sensor data is active due to the difficulty of collecting real-world data, research on diurnal variations is lacking. Therefore, this paper proposes solar elevation as a global condition variable. This variable can be easily calculated from latitude, longitude, and local time, eliminating the need for manual labeling. Furthermore, we propose a custom normalization technique that considers the sensitivity of daylight to small numerical variations in solar elevation, and demonstrate its ability to accurately capture illumination characteristics and illumination-dependent image noise within the context of a diffusion model.

Takeaways, Limitations

Takeaways:
A novel method for effectively accounting for diurnal time-of-day variations is presented by generating synthetic data using solar altitude.
Generate synthetic data without manual labeling.
Improved sensitivity to sunlight through customized normalization techniques.
Improving the accuracy of synthetic data generation using diffusion models.
Limitations:
The generalization performance of the proposed method to other meteorological conditions (e.g., clouds, rain) requires further study.
Further verification is needed to ensure perfect alignment with actual driving conditions.
The need to consider factors other than solar altitude (e.g. atmospheric conditions).
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