When you embed a digital watermark, it actually inserts the watermark information as visible noise into the image.. To embed a digital watermark, you must first register with Digimarc Co
Trang 1Click the Select menu, and then
click Load Selection.
Click the Channel list arrow, select
the new channel, and leave the
other options at their default
values
Click OK.
Click the Filter menu, and then
click Filter Gallery.
Click any of the available filters,
and then adjust the options until
you are satisfied with the result
Click OK.
The gradient mask (black to white)
creates a ramped percentage
selection The white area of the
mask is fully selected and the
black area is fully masked As the
mask moved to black, the image
became less and less selected
When the filter was applied, it lost
strength from left to right
(matching the shades of gray in
the mask)
10
9
8
7
6
5
7
6
Trang 2354 Chapter 14
Digital watermarks are designed to protect your intellectual property
When you embed a digital watermark, it actually inserts the watermark information as visible noise into the image This means that someone can copy your image, scan it, and the watermark is still part of the image To embed a digital watermark, you must first register with Digimarc Corporation, which maintains a database of artists, designers, and photographers along with their contact information You can then embed the Digimarc ID in your images, along with information such as the copyright year or a restricted-use identifier
Protecting Images
with Watermarks
Protect Images with
Watermarks
Open the image you want to
watermark
IMPORTANT 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
Click the Filter menu, point to
Digimarc, and then click Embed
Watermark.
If you're using the watermark for
the first time, click Personalize
Get a Digimarc ID by clicking Info
to launch your Web browser and
visit the Digimarc Web site at
www.digimarc.com
Enter a Digimarc ID and any other
necessary information, and then
click OK
The Personalize button becomes a
Change button, allowing you to
enter a new Digimarc ID
Click the Image Information list
arrow, select an option, and then
enter a copyright year, Transaction
ID, or Image ID for the image
5
4
3
2
5 4
From the Library of Wow! eBook
Trang 3Select any of the following Image
Attributes check boxes:
◆ Restricted Use Select the
check box to limit the use of the
image
◆ Do Not Copy Select the check
box to specify that the image
should not be copied
◆ Adult Content Select the check
box to label the image contents
as suitable for adults only
Choose a level of durability
(visibility) for the watermark
Drag the slider, or enter a value (1
to 4) The higher the number, the
more aggressive the watermark
To automatically assess the
watermark's viability after it’s
embedded, select the Verify check
box
Click OK.
10
9
8
7
6
6 7
Trang 4356 Chapter 14
Viewing Various Filter Effects
Photoshop provides a bountiful selection of
filters, 105 to be exact Take a moment to view
some of the various filter effects that
Photoshop offers The original image is shown
to the right, and we've displayed some
com-mon filters on the following pages A good
thing to think about when using filters is your
original image Look at the background colors,
and see if they will look good with some of
the filters The best thing to do is open an
image that has a lot of varied details, and then
apply some filters to see what looks good to
you
Various Filter Effects
Fresco
Palette Knife
From the Library of Wow! eBook
Trang 5ptg
Trang 6358 Chapter 14
Plastic Wrap Graphic Pen
Stained Glass Mosaic Tiles
Spatter Grain
From the Library of Wow! eBook