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Hour 20. Compositing > Replacing a Background

Replacing a Background

Remember that tiger with the chain link fence in his background? We hid the fence, but it would nice to put him somewhere a little bit wilder. My friend Linda took a picture of a waterfall, somewhere near Easley, South Carolina. It's a nice shot, but it could be more exciting. Maybe we can put the tiger into it. Figure 20.14 shows the waterfall and Figure 20.15 is the original tiger.

The first thing to do is to isolate the tiger, but, because the background is so complicated, the Magic Wand won't be much help. I can select and delete it a piece at a time with the Rectangle Marquee and Lasso, but that would take quite a while. Instead I'll start with the Polygon Lasso and work around the big cat. I then circle it around the top of the screen so that I've selected more or less everything behind him (see Figure 20.16.) What I can't select and delete, I can erase.


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