莱娜图（Lenna）是一张大小为512x512像素的标准测试图像。该图在数字图像处理学习与研究中颇为知名，常被用作数字图像处理各种实验（例如数据压缩和降噪）及科学出版物的例图。
https://t.me/-1001327394846/336
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