我的图像水印是否可能被读取、更改或删除？
是否有一种工具可以显示图像是否包含水印，并在非水印创建者使用的情况下读取、更改或删除水印？
编辑以尝试反映 Kerzin 的意图，如评论中所示：这不是为了知道如何做到这一点，而是其他人是否可以从创建的图像中删除水印，以及如何让它变得更加困难。
Is there a tool that would reveal whether an image contains a watermark and read, alter or remove a watermark if used by someone who is not the creator of the watermark?
Edit to try to reflect Kerzin's intent, as indicated in the comments: This is not for the purpose of knowing how to do it, but whether it can be done by others to remove watermarks from created images, and how it can be made more difficult.
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一般来说：
In general:
这取决于您创建的水印的类型。我假设您正在谈论通常放置在图像一角的不透明或半透明徽标或文本。
这里有一个平衡的行为。如果水印足够小，用户总是可以将其裁剪掉。但如果将其设置得太大，则图像将无法使用。有时这就是意图（例如，看看 iStockPhoto.com：他们在图像中心使用大水印，这样您就无法在不购买图像的情况下使用该图像）。其他时候，您不想这样做（假设您要向 DeviantArt 发布壁纸：您仍然希望人们使用该图像，但如果水印占据屏幕的三分之一，则没有人会使用它）。
如果水印覆盖了图像中不太详细的部分，知道自己在做什么的用户可以使用克隆画笔或其他工具将其从图像中删除。 （就像我曾经从一张美丽的日落照片中删除丑陋的电源线一样。）
此外，如果水印位于所有图像上的同一位置，并且它足够透明，那么熟练的用户可以根据来自的常见像素构建一个过滤器你的几张图片。在适当的情况下，这样的过滤器可以像魔术一样发挥作用。 （但通常不会。）
It depends on the type of watermark you're creating. I'm assuming you're talking about an opaque or semitransparent logo or text that is usually placed in a corner of the image.
There is a balancing act here. If the watermark is small enough, users can always just crop it out. But if you make it too large, you make the image unusable. Sometimes this is the intent (for example, look at iStockPhoto.com: they use big watermarks over the center of the image so that you can't use the image without buying it). Other times, you don't want to do this (say you're posting a wallpaper to DeviantArt: you still want people to use the image, but no one's going to use it if the watermark takes up a third of the screen).
If the watermark covers a part of the image that is not too detailed, users who know what they're doing can use the clone brush or other tools to photoshop it out of the image. (The same way I once removed ugly power lines from an otherwise beautiful sunset photo.)
Also, if the watermark is in the same place on all images, and it is transparent enough, sophisticated users can build a filter based on the common pixels from several of your images. In the right circumstances, such a filter can work like magic. (But usually it won't.)
大多数时候您无法删除水印。甚至手动也没有。
除非它是一个真正简单和/或放置不当的水印，并且图像本身也很容易重建。
有一些工具声称能够删除水印，但我不知道哪些工具真正能够胜任这项任务
Most of the time you won't be able to remove the watermark. Not even manually.
Unless it is a real simple and/or badplaced watermark and the image itself is easy to reconstruct too.
There are a few tools that claim to be able to remove watermarks but I don't know of any which really are up to the task