“先吃饱肚子再吃好”，蕴含着循序渐进的基本道理。
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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「像鬼一樣工作」：台灣外籍移工為何陷入「強迫勞動」處境
DeCSS — Wikipedia