Here’s an image that’s a good example of the flexibility that the patches tool can offer. Patches allows you to blend a large variety of edges with different characteristics independently of each other, to create a successful cut out. The forced edge tool also plays a role. Although this is sometimes seen as a tool of last resort, it allows you the flexibility to decide for yourself where the cutout should start and finish. This ability to create and define an edge can be an enormous advantage, when there’s no discernible edge to find.
At first glance this image looks like an easy task, shot in the studio against a plain white background. But zooming in closer you can see that the lighting used to create the high key effect has produced some quite different edges to consider, from the dark shadow area around the feet and jeans, to the soft edges generated by the rim and fill light along the tops of her shoulders and torso, and of course there’s also her hair to consider. No problem for Fluid Mask! (click the image to see a larger version – please note this image is © shutterstock )
Here’s my Color Workspace, and here’s what I did:
First off, edge width threshold at 6 pixels, number of edges at 50% and blend width set to to thin does the job for all of the image except where I’ve applied patches (around her head for the hair and along her shoulders and torso). I’ve added a forced edge with a few clicks along the top of her laptop and where she’s in contact with the floor, as I don’t want that shadow retained in my cutout.
I’ve used the blend brush on her hair and around the shirt, and then applied patches to shoulders and torso and set the blend ratio (controlled by the feather/smart slider in the edge blending pane) over towards feather, (at ratios of 4:1 for left shoulder, 3:1 for right shoulder and left torso and at 2:1 for right torso). It was really just a matter of drawing in the patch and then playing with the slider and previewing what looks best. I then applied another patch over the head and neck and again, after trying a few different ratios and previewing my results, using the preview cut-out tool, I set the feather / smart ratio at 1:1 which gave the best rendering.
And here’s the finished cutout below. I’ve placed her against a red background so you can best see the edges (click for high res’). An image which whilst looking to be a simple masking task, actually has a few complications and tricky edges, handled by with Fluid Mask 3 with the use of patches.
You can learn more about patches, getting edge blending right and the forced edge tool from our techniques tutorials.
Work smarter not harder with Fluid Mask.