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?
"I've sat down in my chair and my bed enough. It's time to walk now."
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Trump reduced tariffs on Vietnam and removed that country from the United States’s export controls list after the Hanoi government approved his family business’s $1.5bn golf course and real estate project.