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Lepton 无损压缩原理及性能分析
2022-07-05 09:26:00 【InfoQ】
一、从一个游戏开始
1.1 游戏找茬

二、智者的成长
2.1 苏格拉底助产术
- 上面图片为何变小了呢?
- 丢失了的信息去哪了呢?
- 为什么图片质量下降了,我却看不出来呢?
- 我还能将它变的更小吗?
- 我能将它还原成原来的大小吗?
- 为什么要压缩我的图片?
2.2 探求表象背后的故事








三、故事的主角 Lepton
3.1 为什么选择 Lepton

3.2 Lepton进行了哪些优化。
3.3 Lepton在vivo存储中的探索

- lepton压缩与解压缩对服务器的计算性能要求较高、消耗较大。
- 期望充分利用空闲服务器CPU资源,达到降本增效的目的。
- 面对潮汐现象具备动态扩缩容的能力。

3.4 性能评测



四、 图片压缩的常见问题
4.1 通过文件格式区分有损和无损压缩

4.2 常见的无损压缩算法

五、 总结
- 《The Design, Implementation, and Deployment of a System to Transparently Compress Hundreds of Petabytes of Image Files For a File-Storage Service》
- 《基于深度学习的JPEG图像云存储研究》
- 《JPEG-Lepton压缩技术关键模块VLSI结构设计研究》
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