Page 139 - Enhancing CAD Drawings with Photoshop

4386.book Page 122 Monday, November 15, 2004 3:27 PM

122 CHAPTER 4 YOU AND YOUR ENTOURAGE

Figure 4.25
The alpha channel image

3. To automatically crop the image, choose Image Trim. In the Trim dialog box, click the Trans-
parent Pixels radio button and click OK.
4. Rename Layer 0 to PlumTree so that it will be identified properly when you drag this layer into
other Photoshop projects.
5. If you plan to use this image in your own work, now is a good time to save it as a native Pho-
toshop file so that its adjustment layers and channels are preserved for future editing. Save the
file as PlumTreeEntourage.psd. If you’re going to continue working through the following
section, you can leave this file open for now.

TIP You can use this tree in an autumn scene by tweaking the Hue/Saturation adjustment layer in
the Photoshop file to make yellow or orange leaves.

To prepare the entourage for 3D programs, it is best to save in a flattened format that supports
alpha channels to save memory in the 3D program.