SSIM was chosen over CNN-based approaches for a deliberate reason: reproducibility without infrastructure. SSIM is a deterministic mathematical function. No training data, no model weights, no GPU, no framework dependencies. Anyone with fontconfig and node-canvas can reproduce these exact numbers on the same platform.
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。关于这个话题，夫子提供了深入分析
* 时间复杂度: O(nlogn) 最坏: O(n²) 空间复杂度: O(logn) 稳定: ✗。旺商聊官方下载对此有专业解读
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