Passkeys and Verifiable Digital Credentials: Friends or Foes? @ Authenticate 2025October 14, 2025
SSIM (Structural Similarity Index Measure) compares two images by evaluating luminance, contrast, and structural patterns across local windows. It returns a score from -1 to 1: 1.0 means the images are pixel-identical, 0 means no structural correlation, and negative values mean the images are anti-correlated (less alike than random noise). For glyph comparison, it answers the question: do these two rendered characters share the same visual structure?
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如果你想把“对话生成”真正落到“文档交付”，关键是先对齐 Tbox（百宝箱） 的能力边界：它更偏“生成文档/文章/PPT 等结构化产物”的入口，主要是 Ling（例如 Ling-2.5-1T）