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?
// ⚠️ 易错点2：循环条件写left <= n-1（会导致left+1越界），或把<=写成<（漏判相等的有序情况）
，更多细节参见WPS官方版本下载
特朗普的外交政策也呼應了「2025計劃」的部分內容。。safew官方版本下载对此有专业解读
Version: 42.20250920.0