Learn about how to make selections based on color targeting.
- [Instructor] In this movie, we're going to make a simple selection, based on color. Because to isolate this backpack from the background, using the simple tools such as the rectangle and the ellipse, that would take quite a while. There is a tool called the lasso here, which you can do by freehand dragging, but even that, it would take too long to do. So we're going to use an older tool, it's been in Photoshop for, like, ever in here, and it's the magic wand tool, which some people deride.
But it's actually very good at selecting good, solid colors, which is what we've got here. Now you might be looking at the backpack and thinking, no, we haven't, but I'm not looking at the backpack. I'm looking at its surroundings. It's the path of least resistance there. So all you need to do here, look at the top here, you can see it's got a tolerance value, 32 is fine, that gives it different levels around white to select. But click on the white, and you'll see it picks up pretty much most of that white.
Now inside of the enclosed areas, it's not getting those. And what we could do, just deselect that, go select, deselect, just here at the top, command-D, control-D, turn off contiguous, that means neighboring pixels, and then click, and you'll see you've selected the white in the small gaps. However, we have also selected it on this metal item, just here, which we don't want to do. So let's deselect that again, select, deselect, turn contiguous back on, click in the main background.
What you can then do is hold down the shift key and click into the areas here, just under the headrest. Come down and click in this region here, just next to the zipper, and come and click into these eyes here, at the ends of the straps. If you can't see exactly where to click, what you can do is just hit your caps lock key to turn that on, and it turns it into a crosshair, which is slightly more precise. Hold down shift and it adds to that selection, like so. However, we don't want the background, we want the backpack, so we need to flip that out.
And the way to do it is to go to the select menu and choose inverse and it then swaps it out for us. We don't need to worry too much about these edges here that are still selected, that's just fine. What we're going to do is pop up to this feature, select and mask, and we're just going to refine this selection. So first of all, go to the view menu and make sure you've got onion skin showing here. And then you can change the transparency, using this slider.
If we take that up quite high, it's very easy to see where there are slight halos around the backpack. And we can use a couple of controls here to fix that. First of all, we can add a bit of radius, which gives Photoshop some area around the main selection to work. We can turn on smart radius here, very handy for when you're making hair selections, and we'll be doing that in the next movie, but also useful for where you've got transitional edges here. And then we're going to turn up the contrast in the global selections region, and we're also going to bring the edge in just a shade, only a bit, just about 10 or 14%, there in that sort of region.
We'll make that a bit more contrasty so, I pushed that the wrong way actually, there we go. That's much better, much more contrasty, perfect! With that, the only thing we need to do now is output this to a layer mask, which we'll be talking about at the beginning of the next movie. But for now, you can click OK. Your backpack is ready to be used, so we'll just transform the size down. So edit, free transform, we'll get another transformation frame.
Hold down the shift key on your keyboard, mouse down on one of the corners and drag downwards, or use the technique described earlier. And then just hit the tick or return, do a quick save on your work, and then we'll move on to the next step.
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