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README.md

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 ---
 license: apache-2.0
+base_model:
+- Wan-AI/Wan2.2-Animate-14B
+- nvidia/Cosmos3-Super
+- nvidia/Cosmos3-Nano
 ---
+
+# VAE Reconstruction & Color Expansion Evaluation  
+### Wan 2.2 Base HDR VAE vs Ground Truth (GT)
+
+---
+
+## 📊 At-a-Glance Summary
+
+**Color expansion (Wan 2.2 Base HDR VAE vs GT):**
+- LAB volume: **~+34.09%**
+- Saturation: **~+22.27%**
+- Unique colors: **~+23.68%**
+- Quantized colors: **~+30.32%**
+- Sharpness: **~+4.25%**
+
+**Structural cost:**
+- SSIM: **~-1.42%**
+- PSNR: **~-2.31%**
+- MSE: **~+13.09%**
+
+### Key takeaway
+Wan 2.2 Base HDR VAE significantly increases perceptual color richness and detail density,
+while introducing a mild reduction in structural fidelity and a moderate increase in reconstruction error relative to ground truth.
+
+---
+
+## 🧪 Evaluation Setup
+
+- Task: Image reconstruction (VAE decode comparison)
+- Model:
+  - Wan 2.2 Base HDR VAE
+- Reference:
+  - Ground Truth (GT)
+- Mode: Deterministic image reconstruction evaluation
+- Metrics:
+  - Color statistics (HSV / LAB / RGB)
+  - Structural similarity (SSIM)
+  - Pixel fidelity (PSNR, MSE)
+  - Texture features (edges, gradients, sharpness)
+  - Entropy and color diversity measures
+
+---
+
+## 📈 Key Findings
+
+### 🎨 Color behavior
+- Wan 2.2 Base HDR VAE significantly expands GT color space
+- Strong increases in saturation and LAB distribution volume
+- Noticeably richer and more expressive chromatic output
+
+### 🧱 Structure
+- Slight reduction in SSIM and PSNR indicates mild structural deviation from GT
+- Increased sharpness suggests enhanced edge emphasis and micro-detail amplification
+
+### 👁️ Perceptual behavior
+- Outputs appear more vivid and detailed than GT
+- Trade-off between realism fidelity and perceptual enhancement
+
+---
+
+## 📊 Quantitative Results vs GT
+
+### Wan 2.2 Base HDR VAE
+
+- Brightness: **+0.79%**
+- Contrast: **+0.73%**
+- Saturation: **+22.27%**
+- Entropy: **+0.13%**
+- Dynamic range: **-0.13%**
+- Edge density: **-1.41%**
+- Gradient strength: **-0.68%**
+- LAB color volume: **+34.09%**
+- Quantized colors: **+30.32%**
+- Unique colors: **+23.68%**
+- Sharpness: **+4.25%**
+
+---
+
+## 🧮 Reconstruction Quality
+
+### Wan 2.2 Base HDR VAE vs GT
+
+- SSIM: **-1.42%**
+- PSNR: **-2.31%**
+- MSE: **+13.09%**
+
+➡️ Slight reduction in structural fidelity with moderate increase in reconstruction error
+
+---
+
+## 🧠 Interpretation
+
+**Color axis → Strong winner: Wan 2.2 Base HDR VAE**  
+- Large gains in LAB volume, saturation, and color diversity
+
+**Structure axis → Slight trade-off**  
+- Small degradation in SSIM/PSNR balanced by increased sharpness
+
+**Perceptual axis → Winner: Wan 2.2 Base HDR VAE**  
+- More visually rich and detailed outputs compared to GT
+
+---
+
+## 🏁 Final Conclusion
+
+Wan 2.2 Base HDR VAE acts as a **perceptual and chromatic enhancement VAE**, expanding color richness and visible detail density beyond ground truth.
+
+It trades a small amount of structural fidelity for significantly improved perceptual richness, making it more suitable for downstream generative pipelines where visual expressiveness is prioritized over strict reconstruction accuracy.