A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis

Xiaoru Su

doi:10.47297/taposatWSP2633-456926.20250608

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A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis

6卷第8期

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A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis
A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis
The HongKong Polytechnic University, HongKong Sar, 999077, China
2025年6卷第8期页码：141-146
纸质出版：2025-08-30
DOI：10.47297/taposatWSP2633-456926.20250608
Accepted：

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(2025). A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis. 科技理论与实践（英文版）, 6(8), 141-146.

Su Xiaoru.A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis[J].Theory and Practice of Science and Technology,2025,06(08):141-146.
(2025). A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis. 科技理论与实践（英文版）, 6(8), 141-146. DOI： 10.47297/taposatWSP2633-456926.20250608.

Su Xiaoru.A Physics-Guided GAN Framework for Controllable Heavy-Rain Image Synthesis: Methodology and Theoretical Analysis[J].Theory and Practice of Science and Technology,2025,06(08):141-146. DOI： 10.47297/taposatWSP2633-456926.20250608.

摘要

Abstract

Autonomous-driving vision systems suffer substantial performance degradation in heavy-rain scenarios due to severe image degradation

while the scarcity of real-world rainy data and the prohibitive cost of pixel-level annotation hinder the training of robust perception models. To address this issue

we propose a Physics-Guided Generative Adversarial Network (PG-GAN) that enables controllable translation from clear-weather images to high-fidelity heavy-rain imagery.The model incorporates a physically grounded rain formation process—encompassing rain streaks

atmospheric haze

and windshield droplets—as explicit priors and is optimized via a composite objective integrating adversarial loss

perceptual loss

and physics-consistency loss. The synthetic rainy images are subsequently employed to augment the training set of a YOLOv5 object detector. Theoretical analysis based on prior works [5

20] predicts: (1) rain-streak orientation error reduction to <5° (3) surpassing clear-weather baseline by 15.3% and falling short of the oracle trained on real heavy-rain images by merely 0.8 %. This framework establishes a physics-grounded synthesis paradigm

with efficacy validation pending community collaboration.

关键词

Keywords

references

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