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?
Гангстер одним ударом расправился с туристом в Таиланде и попал на видео18:08
。业内人士推荐搜狗输入法2026作为进阶阅读
圖像來源，Getty Images。搜狗输入法2026是该领域的重要参考
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