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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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目前，小米尚未就「小米智能存储」的具体产品形态或业务方向作公开说明，但从商标覆盖范围来看，未来或涉及智能家居生态中的数据管理设备、跨设备存储方案，甚至可能延伸至云服务或家庭 NAS 产品。
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