论文标题

通过平行照明类比进行活跃的照明复发,以进行细粒度变化检测

Active Lighting Recurrence by Parallel Lighting Analogy for Fine-Grained Change Detection

论文作者

Zhang, Qian, Feng, Wei, Wan, Liang, Tian, Fei-Peng, Wang, Xiaowei, Tan, Ping

论文摘要

本文研究了一个新问题,即主动照明复发(ALR),该问题从物理上重新定位了光源,以从单个参考图像中重现同一场景的照明条件,这在两次观察过程中可能会遭受细粒度的变化。对于细粒度的视觉检查和变化检测,ALR非常重要,因为在特定的照明条件下只能清楚地观察到某些现象或分钟变化。因此,有效的ALR应该能够在线导航朝目标姿势导航,这是由于现实世界照明和成像过程的复杂性和多样性而具有挑战性的。为此,我们建议将简单的平行照明用作类比模型,并基于兰伯特法律来为此目的组成即时导航球。从理论上讲,我们证明了这种ALR方法的可行性,即对等效性和收敛性,用于逼真的近点光源和小近表面光源。此外,从理论上讲,我们还证明了我们的ALR方法的不变性,即正常和照明分解的歧义。通过广泛的定量实验和对文化遗产的细粒度变化检测的挑战,已经验证了所提出方法的有效性和优势。我们还验证了我们对非陆师场景的方法的普遍性。

This paper studies a new problem, namely active lighting recurrence (ALR) that physically relocalizes a light source to reproduce the lighting condition from single reference image for a same scene, which may suffer from fine-grained changes during twice observations. ALR is of great importance for fine-grained visual inspection and change detection, because some phenomena or minute changes can only be clearly observed under particular lighting conditions. Therefore, effective ALR should be able to online navigate a light source toward the target pose, which is challenging due to the complexity and diversity of real-world lighting and imaging processes. To this end, we propose to use the simple parallel lighting as an analogy model and based on Lambertian law to compose an instant navigation ball for this purpose. We theoretically prove the feasibility, i.e., equivalence and convergence, of this ALR approach for realistic near point light source and small near surface light source. Besides, we also theoretically prove the invariance of our ALR approach to the ambiguity of normal and lighting decomposition. The effectiveness and superiority of the proposed approach have been verified by both extensive quantitative experiments and challenging real-world tasks on fine-grained change detection of cultural heritages. We also validate the generality of our approach to non-Lambertian scenes.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源