Last week we said there were hundreds of ways to remove backgrounds in Photoshop, and now we’re diving deeper into that claim. Keep reading for the next huge installment of ways to remove backgrounds in Photoshop!
Today, we’ll cover masking images, and why some people prefer masking to erasing big chunks of your images, as well as a bunch of basic (and some not so basic) ways to remove all those image backgrounds using masks image erasing methods.
Masking Images, Deleting Them… What’s the Difference?
Last week, we covered the difference between unlocking an image background and duplicating it. Now, let’s take a look at the differences between masking and deleting, which aren’t apparent when you simply look at the images themselves.
Layer Masks, which you can read more about here, are a simple way to hide information in layers while keeping maximum editability. Many professional Photoshop users often find a number of reasons they need to that hidden information, and Layer Masks allow them to keep it, while still hiding it away.
Create a layer mask by clicking the icon in the Layers Panel when you have a selection with the marquee, or any of the advanced methods located below. If your mask blocks off the wrong area, you can select the mask and press Ctrl + I to invert it, and switch the transparent and opaque areas. Layer Masks require unlocked layers, like the copy of the background layer above, or the “Layer 0” unlocked version of the Background located directly below. Refer to Part 1 to learn more about these two methods.
There is, however, something to be said for deleting image information when cutting out background, some of which is not terribly useful to keep around. Many of Photoshop’s background erasing tools only work with the “image deletion method,” so it’s obvious to see there’s no right and wrong way sanctioned by Adobe. We’ll leave it up to the discretion of the reader which method suits them best, because Photoshop is all about the user’s options. Simply keep in mind that deleted information will never come back once it is deleted unless you can revert to an older version of your file.
Erasing or deleting image information can be done on any layer that is unlocked, like the unlocked Layer 0 above, or the duplicated Background copy layer shown in the last example.
Methods to Delete Image Information
Advanced Methods for Creating Masks
Many Photoshop users do not like using the Eraser tool to remove backgrounds, as it can be time consuming to accurately cut out an image, particularly for users that struggle to paint accurate marks with the mouse.
The eraser is one of the most basic tools to remove backgrounds, and should be used as little as possible, if you can manage. Still, HTG has previously covered a more in depth how-to on the eraser tool.
One of the great benefits for new Photoshop users is that this tool actually will unlock background layers in a single step—simply click in a contiguous field of a single color in your “Background” layer, and watch it disappear to transparency.
A more complete how-to on the Magic Eraser Tool can be found here.
Using Photoshop’s edge detection, the Background Eraser tool is far from perfect. There are three settings: Contiguous, Non-Contiguous, and Edge-Detect. Frankly, all three have their inaccuracies, although one may have an advantage over others in certain situations.
This tool is far from the best method on this list to remove a background. Experiment with it, but don’t expect to get a lot of use out of it.
It doesn’t discriminate between the parts of the image you want and those that you don’t, so use with care and be prepared to with a quick Ctrl + Z to undo goof ups.
A quick tap of Shift + F5 will bring up the Fill dialog box, where you can fill all selected areas with preselected sets of colors, or simply fill said areas with transparancy.
Because the Fill command is independent of the cursor tool, there is no way to control which colors will be knocked back to transparency, so make certain your selections are the way you want them before using the Fill tool.
To knock back to transparency using this tool, set your “Blending Mode” to clear, as shown on the right.
In Quick Mask mode, you can use the Brush Tool, Pencil Tool, or Paint Bucket Tool to paint in solid colors. Since you’re technically working with a mask, you can only work with shades of gray, preferably black and white. In Quick Mask Mode, painting black represents masked or “erased” areas, while painting white represents your image areas. Press Q again to end quick mask mode, which will automatically create a selection from your painting.
Using the pen tool, draw a vector shape around your object or objects. This can be tricky, as the pen tool is difficult. Once you finish your enclosed shape, you’ll need to find your Paths panel to load your selection.
You’re looking for the button that looks like a Photoshop marquee that creates a selection for this path.
Vector Masks have the advantage of being scalable, and keeping edges clean even when artwork is blown up to large sizes. Beyond that, there’s little advantage of vector masks over Layer Masks, as vector masks seem to render masked images in a near-identical manner to raster-based Layer Masks.
Simply use whichever mask style suits you best.
This tool allows you to draw line segments in the same freeform manner the Lasso tool allows. Simply click and drag to create vector paths to become selections or vector masks, exactly like the previous techniques.
If you find you have broken line segments, you can simply switch to the Pen Tool to join them.
Create some type of any size or typeface. Right click on your text and find “Create Work Path.” Photoshop creates vector lines around your text.
From there you can return to Layer > Vector Mask > Current Layer to create a mask from your typography.
Like last week’s how-tos, these techniques aren’t necessarily independent of each other—the beauty of Photoshop is the creative combination of all of these techniques to create interesting, easy, and fun ways to accomplish your image goals. Check us out next time, where we’ll take on Part 3 of “50+ Ways to Remove Image Backgrounds.”
Image Credits: Geisha Fullheight by Michael Reeve, available under Creative Commons. Darter – anhinga melanogaster and Sacred kingfisher by Fir0002, available under GNU License.
