In this example, each element-the mantel, firebox, fireplace surround, even the TV and the woodstove-exist as separate elements. It’s also beneficial to create separate geometry for all of the parts and pieces needed to display the 3-D object. It’s ultimately what makes it possible to accurately portray how the 3-D object will look in the actual space. That’s because when the photo is imported into SketchUp, it’s just a bunch of pixels, and the Match Photo feature uses the dimensions from the model to scale the photo.
In fact, the more dimensions you include in the model, the better. How much detail you include in the surrounding space is up to you, but the dimensions should be as close as possible to the actual dimensions of the space. It’s not necessary to model the surrounding space, but I find it’s helpful to have context when I’m building the 3-D object. In this example, I detailed the mantel and the wall where it would be installed and I also created a blank “movie-set” version of the rest of the space. The next step is to build and save a SketchUp model of the 3-D object you’ll eventually import into the photo. Inside and outside corners, window edges, and other clear lines work best, and longer lines are better. You want an angle that will give a good view of the final product, but sharply outlined reference points in all three dimensions will help later when it’s time to locate the model overlay in the photo. When photographing the existing space, carefully choose the vantage point. In this case, I wanted to show my clients how a mantel would look in their under-construction family room. I’ve made a couple of YouTube videos that walk through the process, and this article summarizes the key steps. I still occasionally build a mock-up, but I can accomplish the same thing in SketchUp using the Match Photo feature, which combines a SketchUp model of the proposed construction with a photograph of the existing condition. It helps when clients can preview their project in 3-D.
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