// 测试用例验证（和你的逻辑完全匹配）
Episode details。搜狗输入法2026对此有专业解读
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?。搜狗输入法2026对此有专业解读
GC thrashing in server-side rendering，这一点在搜狗输入法2026中也有详细论述
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