blocks|key|939978|text|有一个移植到c#的图像魔术库，它可以很容易地为你执行该操作……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|939979|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

there is a port of image magick library to c# , and it can easily perform that operation for you...

blocks|key|945136|text|在图片中存储“看不见的”数据被称为“隐写术”。在谷歌上搜索“隐写术.net”，会发现this+article是最热门的搜索结果，这可能会被证明是有用的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|945137|entityMap|0|LINK|mutability|MUTABLE|url|http://www.devx.com/dotnet/Article/22667/0/page/1^0|16|C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Storing "invisible" data in pictures is known as "steganography". A Google-search for "steganography .net" yields <a href="http://www.devx.com/dotnet/Article/22667/0/page/1" rel="noreferrer">this article</a> as its top hit - might prove useful.

blocks|key|155711|text|这样做的目的是什么？它是为了让你能够识别从你的网站上取走的JPG吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|155712|155713|在评论中回应道：“是的，我想用一些健壮且不可见的水印来保护我的图片。半可见的网站徽标不是一个选择……”|blockquote|155714|155715|155716|这个问题就是上面讨论的隐写术中描述的问题，与图像的鲁棒性有关。|155717|任何像你描述的那样的水印都可以用来识别整个图像的直接副本，但对于jpg，在我看来，如果它甚至在编辑器中再次打开并保存，则可能会有影响水印的压缩变化。此外，如果有人窃取你的图像，并对其进行更广泛的处理-修补颜色平衡，裁剪它，等等，任何看不见的水印似乎不太可能足够强大，以生存和保持可识别。|155718|不幸的是，我在这里没有解决方案，但问题本身远非微不足道。这可能值得寻找其他方法来处理它，也许你可以与水印并行使用(自定义元数据？防止图像被轻松保存？)为了让你的图像更难被窃取，或者如果它们被窃取，它们的价值就会降低。|155719|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|R|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|U|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|V|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|W|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|O|$]]

What is the purpose of this? Is it to enable you to identify JPGs that have been taken from your site?

<blockquote>
 Response in comments: "Yes, I want to protect my pictures by using some robust and invisible watermark. Semi-visible site logo is not an option... "
</blockquote>

The problem is precisely the one described in discussion of Steganography above, to do with the robustness of the image.

Any watermark like the one you describe can be used to identify a direct copy of the whole image, but with a jpg it seems to me that if it is even opened and saved again in an editor there is a chance of a change in compression affecting the watermark. Also if someone was to steal your image and do something more extensive with it- tinker with the colour balance, crop it a little and so on it seems unlikely that any invisible watermarking would be robust enough to survive and stay recogniseable.

Unfortunately I don't have a solution here, but the problem itself is far from trivial. It may be worth looking for other approaches to it, that you can perhaps use in parallel with watermarking ( custom metadata perhaps? preventing images being easily saved? ) to make it harder for your images to be stolen or to make them less valuable if they are...

blocks|key|945152|text|devx.com上的这篇文章包含一个库(Stego)，其中包含您可以使用的源代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|945153|Keeping+Secrets+Secret:+Steganography+with+.NET|offset|length|945154|在实现该|945155|之后，在.bmp文件中隐藏一条消息是很简单的：|blockquote|945156|945157|945158|+++ICoverFile+cover+=+new+BMPCoverFile("cover.bmp");
+++cover.CreateStegoFile("stego.bmp","Hello","MyPwd");+++|code-block|syntax|javascript|945159|945160|同样，您也可以轻松地提取消息：|945161|945162|945163|+++IStegoFile+stego+=+new+
++++++BMPStegoFile("stego.bmp","MyPwd");
+++Console.WriteLine(stego.HiddenMessage);|945164|更新:哦，对不起。马特链接到同一篇文章。在写这个答案的时候我没有看到这一点。|945165|entityMap|0|LINK|mutability|MUTABLE|url|http://www.devx.com/dotnet/Article/22667^0|0|0|1B|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|19|8|@]|9|@$D|1A|E|1B|1|1C]]|A|$]]|$1|F|3|G|5|6|7|1D|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|1E|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|1H|8|@]|9|@]|A|$P|Q]]|$1|R|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|S|3|T|5|J|7|1J|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|W|3|X|5|O|7|1M|8|@]|9|@]|A|$P|Q]]|$1|Y|3|Z|5|6|7|1N|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17]]]]

This article on devx.com contains a library (Stego) with source code you could use:

<a href="http://www.devx.com/dotnet/Article/22667" rel="nofollow noreferrer">Keeping Secrets Secret: Steganography with .NET</a>

<blockquote>
 After implementing that API, it's
 trivial to hide a message inside a
 .bmp file:
</blockquote>

<pre><code> ICoverFile cover = new BMPCoverFile("cover.bmp");
 cover.CreateStegoFile("stego.bmp","Hello","MyPwd"); 
</code></pre>

<blockquote>
 Likewise, you can extract the message
 just as easily:
</blockquote>

<pre><code> IStegoFile stego = new 
 BMPStegoFile("stego.bmp","MyPwd");
 Console.WriteLine(stego.HiddenMessage);
</code></pre>

UPDATE: Oh, sorry. Matt linked to the same article... didn't see that while writing this answer.

blocks|key|4219438|text|如果您正在开发一个重要的应用程序，为什么不尝试付费服务呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4219439|Digimarc和Signumtech可以使用他们的软件开发工具包为你提供这种支持。|offset|length|4219440|entityMap|0|LINK|mutability|MUTABLE|url|https://www.digimarc.com/|1|http://www.signumtech.com/^0|0|0|8|0|9|A|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]|$D|U|E|V|1|W]]|A|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]|N|$5|I|J|K|A|$L|O]]]]

If it is a important application that you are working on, why not trying a paid service?

<a href="https://www.digimarc.com/" rel="nofollow noreferrer">Digimarc</a> and <a href="http://www.signumtech.com/" rel="nofollow noreferrer">Signumtech</a> can give you that kind of support using their SDK.

I want to insert multiple invisible watermarks into my JPEG pictures through C# code. That means that I need a .NET library that does this work and not some external batch application.

Any suggestions?

Adding an invisible image watermark in C#?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我想通过C#代码将多个不可见的水印插入到我的JPEG图片中。这意味着我需要一个完成这项工作的.NET库，而不是某个外部批处理应用程序。有什么建议吗？

问在C#中添加不可见的图像水印？
EN

回答 5

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在C#中添加不可见的图像水印？EN

回答 5

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在C#中添加不可见的图像水印？
EN