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-license: apache-2.0
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+license: apache-2.0
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+# Visual Anomaly Detection under Complex View-Illumination Interplay: A Large-Scale Benchmark  
+🌐 [Hugging Face Dataset](https://huggingface.co/datasets/ChengYuQi99/M2AD)  
+
+
+> 📚 [**Paper**](https://arxiv.org/abs/2505.10996) • 🏠 [**Homepage**](https://hustcyq.github.io/M2AD/)  
+> by [Yunkang Cao*](https://caoyunkang.github.io/), [Yuqi Cheng*](https://hustcyq.github.io/), [Xiaohao Xu](), [Yiheng Zhang](), [Yihan Sun](), [Yuxiang Tan](), [Yuxin Zhang](), [Weiming Shen](https://scholar.google.com/citations?user=FuSHsx4AAAAJ&hl=en),  
+
+
+## 🚀 Updates  
+We're committed to open science! Here's our progress:  
+* **2025/05/19**: 📄 Paper released on [ArXiv](https://arxiv.org/abs/2505.10996).  
+* **2025/05/16**: 🌐 Dataset homepage launched.  
+* **2025/05/24**: 🧪 Code release for benchmark evaluation!  [code](https://github.com/hustCYQ/M2AD)
+
+
+## 📊 Introduction  
+Visual Anomaly Detection (VAD) systems often fail in the real world due to sensitivity to **viewpoint-illumination interplay**—complex interactions that distort defect visibility. Existing benchmarks overlook this challenge.  
+
+Introducing **M2AD** (Multi-View Multi-Illumination Anomaly Detection), a large-scale benchmark designed to rigorously test VAD robustness under these conditions:  
+- **119,880 high-resolution images** across 10 categories, 999 specimens, 12 views, and 10 illuminations (120 configurations).  
+- **Two evaluation protocols**:  
+  - 🔄 **M2AD-Synergy**: Tests multi-configuration information fusion.  
+  - 🧪 **M2AD-Invariant**: Measures single-image robustness to view-illumination variations.  
+- Key finding: SOTA VAD methods struggle significantly on M2AD, highlighting the critical need for robust solutions.