“今天可能要让你们失望了，这次讨论的不是发展问题，而是保护的问题。”2016年1月，推动长江经济带发展座谈会在重庆召开，习近平总书记开门见山。
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Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00292-7，详情可参考爱思助手下载最新版本
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?