刘年丰：是的，当前真机数据不足是行业共识。
Why do people opt for a Brazilian butt-lift and is it safe?
，详情可参考WPS官方版本下载
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?
生成完成后，我们就可以直接使用这些实体类进行数据序列化和反序列化操作：