Adobe Photoshop CS6, User Manual

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Embed a watermark
To embed a digital watermark, you must first register with Digimarc Corporation—which maintains a database of artists, designers, and
photographers and their contact information—to get a unique Digimarc ID. You can then embed the Digimarc ID in your images, along with
information such as the copyright year or a restricted-use identifier.
1. Open the image that you want to watermark. You can embed only one digital watermark per image. The Embed Watermark filter won’t
work on an image that has been previously watermarked.
If you’re working with a layered image, you should flatten the image before watermarking it; otherwise, the watermark will affect the active
layer only.
Note: You can add a digital watermark to an indexed-color image by first converting the image to RGB mode, embedding the watermark,
and then converting the image back to Indexed Color mode. However, the results may be inconsistent. To make sure that the watermark
was embedded, run the Read Watermark filter.
2. Choose Filter > Digimarc > Embed Watermark.
3. If you are using the filter for the first time, click the Personalize button. Get a Digimarc ID by clicking Info to launch your web browser and
visit the Digimarc website at www.digimarc.com. Enter your PIN and ID number in the Digimarc ID text box, and click OK.
After you enter a Digimarc ID, the Personalize button becomes a Change button, allowing you to enter a new Digimarc ID.
4. Enter a copyright year, transaction ID, or image ID for the image.
5. Select any of the following image attributes:
Restricted Use Limits the use of the image.
Do Not Copy Specifies that the image should not be copied.
Adult Content Labels the image contents as suitable for adults only. (Within Photoshop, this option does not limit access to adult-only
images, but future versions of other applications may limit their display.)
6. For Watermark Durability, drag the slider or enter a value, as described in the next section.
7. Select Verify to automatically assess the watermark’s durability after it is embedded.
8. Click OK.
Using the Watermark Durability setting
The default Watermark Durability setting is designed to strike a balance between watermark durability and visibility in most images. However, you
can adjust the Watermark Durability setting yourself to suit the needs of your images. Low values are less visible in an image but less durable, and
may be damaged by applying filters or by performing some image editing, printing, and scanning operations. High values are more durable but
may display some visible noise in the image.
Your setting should depend on the intended use of the image and the goals you’ve set for your watermarks. For example, it may be quite
acceptable to use a higher Watermark Durability setting with JPEG images posted on a website. The higher durability helps to ensure the
persistence of the watermark, and the increased visibility often is not noticeable with medium-resolution JPEG images. Digimarc recommends
experimenting with various settings as part of your testing process to determine which setting works best for the majority of your images.
Check the signal strength meter
The signal strength meter helps you determine whether a watermark is durable enough to survive the intended use of the image.
Choose Filter > Digimarc > Read Watermark. The signal strength meter appears at the bottom of the dialog box. You can also display the meter
automatically by selecting Verify while embedding the watermark.
The signal strength meter is available only for images containing digital watermarks that you yourself have embedded.
Digimarc recommends that you check the signal strength meter before publishing your images. For example, if you often compress watermarked
images for inclusion in a website, check the meter before posting the images. You can also use the signal strength meter to gauge the
effectiveness of different Watermark Durability settings that you are experimenting with.
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