Experimental therapy of applying stem cells during surgery could be ‘major milestone’ in treatment of birth defects
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?
，详情可参考搜狗输入法2026
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things, other prefixes just identify product lines.↩