Using the watermark durability setting, Check the signal strength meter – Adobe Photoshop CC 2014 v.14.xx User Manual
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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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