Adobe Photoshop CS4 - Manual (Page 206)

199 USING PHOTOSHOP CS4
Retouching and transforming
Last updated 1/10/2010
Crop and Straighten photos
You can place several photos on your scanner and scan them in one pass, which creates a single image file. The Crop
and Straighten Photos command is an automated feature that can create separate image files from the multiple-image
scan.
For best results, you should keep 1/8 inch between the images in your scan, and the background (typically the scanner
bed) should be a uniform color with little noise. The Crop and Straighten Photos command works best on images with
clearly delineated outlines. If the Crop and Straighten Photos command cannot properly process the image file, use
the Crop tool.
1 Open the scanned file that contains the images you want to separate.
2 Select the layer that contains the images.
3 (Optional) Draw a selection around the images you want to process.
This is useful if you don’t want to process all the images in the scan file.
4 Choose File > Automate > Crop And Straighten Photos. The scanned images are processed, and then each image
opens in its own window.
If the Crop And Straighten Photos command incorrectly splits one of your images, make a selection border around the
image and some background, and then hold down Alt (Windows) or Option (Mac OS) as you choose the command.
The modifier key indicates that only one image should be separated from the background.
Rotate or flip an entire image
The Image Rotation commands let you rotate or flip an entire image. The commands do not work on individual layers
or parts of layers, paths, or selection borders. If you want to rotate a selection or layer, use the Transform or Free
Transform commands.
Rotating images
A. Flip Horizontal B. Original image C. Flip Vertical D. Rotate 90° CCW E. Rotate 180° F. Rotate 90° CW
❖ Choose Image > Image Rotation, and choose one of the following commands from the submenu:
180° Rotates the image by a half-turn.
90° CW Rotates the image clockwise by a quarter-turn.
90° CCW Rotates the image counterclockwise by a quarter-turn.
Arbitrary Rotates the image by the angle you specify. If you choose this option, enter an angle between -359.99 and
359.99 in the angle text box. (In Photoshop, you can select °CW or °CCW to rotate clockwise or counterclockwise.)
Then click OK.
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