Adobe Photoshop CS4 - Manual (Page 232)

225 USING PHOTOSHOP CS4
Retouching and transforming
Last updated 1/10/2010
A. Original image B. Scaled narrower C. Scaled narrower, using content-aware scaling
For a video on content-aware scaling, see www.adobe.com/go/lrvid4120_ps . (Discussion of this feature begins at the
four-minute mark.)
Preserve visual content when scaling images
1 (Optional) Choose Select > All if you’re scaling a Background layer.
2 Choose Edit > Content-Aware Scale.
3 Specify any of the following in the options bar:
Reference Point Location Click a square on the reference point locator to specify the fixed point around which
the image is scaled. By default this point is at the center of the image.
Use Relative Positioning For Reference Point Click the button to specify the new position of the reference point in
relation to its current position.
Reference Point Position Positions the reference point at the specific location. Enter X-axis and Y-axis pixel
dimensions.
Scaling Percentage Specifies the image scaling as a percentage of the original size. Enter a percentage for the width
(W) and height (H). If desired, click Maintain Aspect Ratio .
Amount Specifies the ratio of content-aware scaling to normal scaling. Specify a percentage for content-aware scaling
by typing in the text box or clicking the arrow and moving the slider.
Protect Chooses an alpha channel that specifies an area to protect.
Protect Skin Tones Attempts to preserve regions that contain skin-tones.
4 Drag a handle on the bounding box to scale the image. Press Shift as you drag a corner handle to scale
proportionately. When positioned over a handle, the pointer becomes a double arrow.
5 Click either Cancel Transform or Commit Transform .
Specify content to protect when scaling
1 Make a selection around the content you want to protect and then, in the Channels panel, click Save Selection As
Channel
.
2 (Optional) Choose Select > All if you’re scaling a Background layer.
3 Choose Edit > Content-Aware Scale.
4 In the options bar, choose the alpha channel you created.
A B C