Detail of image using Displace Filter

Following the Folds

Using Photoshop’s Displace filter for scrapbooking

Even when I’m buying kits for scrap pages or art journaling, I often want to do some little something for the layout with my own elements. As I talked about in “My Own Things,” sometimes I photograph and extract  personal family mementos to add to a layout, whether or not I make them the main feature. Even more often I like to make layout elements using Photoshop and Illustrator, expanding on a purchased kit by creating or altering various scrap elements to go with it. Whether I’m creating, or simply altering an element, I’m going to remember making the page when I do that—it becomes a memory wrapped in a memory.

Adobe Photoshop’s Displace filter (found under Filter> Distort) is a very old filter that really needs renovation, but even though it’s ancient now, it still does something nothing else does: it distorts an image so it appears to fall into the folds, the cracks, the crevices of another image. You can make flags wave and “paint” signs on brick. The Displace filter uses the grayscale luminance in a file (called a displacement map) to shift some pixels up and left if the luminance is lighter than 50% gray, and down and right if the luminance is darker that 50% gray. The closer to pure black or white, the greater the shift.

Displace Filter dialog
The ancient Displace filter (default settings shown) doesn’t have a preview. You need to use trial and error to get the settings right. So long as you apply it to a Smart Object layer as a Smart Filter, you can re-edit the amount.

I used the Displace filter to bend papers from scrapbook kits around circle fans—the kind often used as one layer in a paper flower—a paper rose, and a curtain. Although you can create a displacement map from any file you create and/or save as a PSD, you’ll often want to use the folds, bumps, or cracks found in the original image. You don’t have to convert it to a grayscale image first, but you’ll often get better results if you do. Many images need more contrast in order to make the displacement obvious, or sometimes less contrast so the shift in pixels isn’t too extreme.

Low contrast displacement map
Too little contrast and the displacement map won’t have much of an effect on the pattern.
Strong contrast displacement map
Too much contrast and the displacement map will shift the pixels away from each other very harshly.
Gaussian Blur sofens a displacement map
If you have an image with sharp contrast causing too much distortion, Gaussian Blur can help.

On a copy of your original base image (the fan or flower or whatever you’re applying a pattern to), use a B&W adjustment layer or press Cmd/Ctrl-Shift-U (for Desaturate), then use adjustment layers to change the contrast. Save the file to disk as a PSD. When you run the filter, it expects you to locate the displacement map on your hard drive. The format has to be a PSD, but it doesn’t have to be a flattened file. You can keep your adjustment layers intact if you think you might want to alter the map.

I often use the grayscale conversion for both my displacement map and the base for the pattern I’m going to apply to it, but that’s not always desirable—you need to be aware of values for the actual image as well as for the displacement map. I next add the paper by dragging it from Bridge on top of the base image (or choose File> Open as Smart Object). After clipping the paper to the base image, I’m ready to run the Displace filter. When you first see the results, you won’t be impressed. In fact, with no preview, you won’t even know if you’ve displaced the pattern by the right amount.

I choose to duplicate the base image and place it above the clipped pattern layer. I then begin to try Blend modes to add back the luminosity of the original image.  Multiply, Overlay, Soft Light, and Hard Light are the most likely to produce results you’ll like. You could actually apply one of those modes to the pattern layer itself, and you might prefer that to keep your file simple. I find that using the duplicate layer simply gives me more options for adjusting the final results since I can lower the Opacity on the top layer without reducing the opacity of the pattern. And finally, I adjust the image overall by adding adjustment layers.

Layers used with Displace Filter
Sandwiching the pattern layer with the Displace filter between two copies of the base image makes it possible for me to use a Blend mode at reduced opacity without reducing the opacity of the pattern layer itself.
Results with and without the Displace filter
The image on the left shows adding a clipped pattern layer sandwiched between the base layers without running the Displace filter. While the blend mode alone makes the pattern appear to bend somewhat with the base image, it is much flatter than the image on the right with the Displace filter.

Figuring out the right amount to use for displacing a pattern is pretty much trial and error, but the higher the amount, the greater the distortion in the pattern itself. With higher amounts, you’re likely to see some tearing in the pattern, which may or may not work. Further, unless the pattern you choose is fairly well defined or has clear vertical or horizontal lines, you probably won’t see very much benefit from using a displacement map over simply clipping the pattern to the base image and using a blend mode to merge the two.

Different types of patterns illustrated
The pattern on the left is simple and well defined, so works well with the Displace filter. The pattern on the right is very abstract and has almost no definition, but it does have some strong vertical and horizontal lines, so using the Displace filter adds a slight level of realism when merging the pattern with the base image. Credit for these paper fan patterns and the one above: Valentina Creations.
Different scale amounts with Displace
A strongly geometric pattern shows how the Displace filter works with different amounts: Left, none; Middle, 12; Right, 30. Using the higher amount distorts the pattern significantly compared to staying close to the default, but I think the higher amount works well with the kit “Paradise” from Valentina Creations, so trying different amounts can yield pleasing results.

Creating flowers isn’t the only reason to use the Displace filter when creating elements for scrap and art journaling. Designers have long used displacement maps when they’ve wanted to add patterns to draped fabrics for illustration. Whether you’re creating clothes for art journal dolls, or curtains for a fantasy scene, as I did, the Displace filter will add a touch of realism, and can even work well with sheer fabrics. After using the method I’ve described, I still thought the fabric was a bit too dark, so I loaded the transparency for the curtain layer, added a new layer at the bottom, and filled it with white—since the selection held transparency, the fabric remained sheer, only a bit less so. And since I wanted to show that the fabric is slightly sheer, I decided to show it against a background paper. Of course, at that point I couldn’t quit. . .

Layers for sheer curtains with Displace Filter
Even sheer fabrics with gentle folds make good candidates for adding pattern with the Displace Filter.
Image with patterned curtains
The Displace filter works well when adding pattern to draped fabrics. Credits: Valentina, Priss, itKuPiLLi, and Krysty
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s