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This chapter is from the book

Automated Cropping and Straightening

Since nearly everybody (digital or not) has a shoebox full of old vintage family photos up in the attic, I wanted to include a tutorial on the new Crop and Straighten Photos automation. Its name is a bit misleading, because it does much more—it lets you scan multiple photos at one time (on your flatbed scanner), then it looks at each photo, straightens it, and then copies each into its own separate window (saving you the trouble).

Step One. Place as many photos as will fit at one time on the scanning bed of your flatbed desktop scanner and scan them in. They'll all appear in one large document (as shown here). As you can see, these photos were crooked when placed on the scanning bed, so naturally they appear crooked in the Photoshop document.
Step Two. Go under the File menu, under Automate, and choose Crop and Straighten Photos (as shown here).
Step Three. No dialog box appears. Instead, Photoshop looks for straight edges in your photos, straightens the photos, and copies each into its own separate window (as shown here).
Step Four. This automation also works on single images (like the one shown here, which is crooked. Since it was taken with a digital camera, you're probably wondering how it got so crooked. I rotated it. Don't tell anybody).
Step Five. When you choose Crop and Straighten Photos now, it crops and straightens this one photo, but it still duplicates the image into a separate document. Hey, it's not perfect. Speaking of not perfect, it seems to work best when the photos you scan as a group have similar tonal qualities. The more varied the color of the photos is, the harder time it seems to have straightening the images.
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