c# 設置水印,消除水印

方案1:

圖像處理git

opencv etcgithub

方案2:

開源框架,直接使用,已經優化框架

https://github.com/itext/itextsharp
https://github.com/itext/itext7-dotnet
https://github.com/itext/i7n-pdfsweep

https://github.com/itext/itextsharp/releases/tag/5.5.13
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