If you have an original image and the image with the watermark, you can subtract them to see what what watermark did. You can then subtract this watermark from other images. Note that this won't always work and will result in artifacts unless you know exactly how the watermark was applied.
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Photoshop。
如果您有原始图像和带有水印的图像，您可以将它们相减以查看水印的作用。然后您可以从其他图像中减去此水印。请注意，这并不总是有效，并且会导致伪像，除非您确切知道水印是如何应用的。
Photoshop.
If you have an original image and the image with the watermark, you can subtract them to see what what watermark did. You can then subtract this watermark from other images. Note that this won't always work and will result in artifacts unless you know exactly how the watermark was applied.