Correlation analysis shows APS aligns strongly with HQR (ρ = 0.84), confirming that the model’s quality amplification aligns with professional aesthetic judgments. | Configuration | LPIPS | SSIM | HQR | |---|---|---|---| | Full STEFI | 0.112 | 0.938 | 4.62 | | – MTP (random texture) | 0.138 | 0.927 | 4.31 | | – DAG (fixed attention) | 0.129 | 0.932 | 4.48 | | – QAL (only LPIPS) | 0.139 | 0.925 | 4.19 | | – All (baseline diffusion) | 0.158 | 0.902 | 4.12 |