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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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More on this storyThe potato farmer who made millions
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2月25日，习近平主席在京会见农历马年来华进行正式访问的首位外国领导人德国总理默茨。习近平主席对下一步中德关系发展提出三点意见，为深化两国关系作出战略指引。国际社会认为，在国际局势变乱交织的当下，中德两国共同发出坚持开放合作、携手应对挑战的积极信号，为动荡不安的世界注入稳定性和正能量。
（作者单位：中国社会科学院考古研究所）。关于这个话题，谷歌浏览器【最新下载地址】提供了深入分析