Sign & Digital Graphics

February '18

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S I G N & D I G I T A L G R A P H I C S • February 2018 • 47 Look through the 3D glasses as you drag the horizontal slider to the left to specify a negative value. (Make sure the red filter covers the left eye this time.) Click the Repeat Edge Pixels radio button, and click OK. The image now appears to gradually recede into the picture plane. Magic Pictures Anaglyphic 3D is a compelling technology. It's not difficult to achieve some pretty eye-popping effects that compel the viewer. It feels like magic when your flat printed paper suddenly takes on another dimension with images that literally leap off the page. With a small amount of channel manip- ulation and a pair of red and blue 3 D glasses, you can have a lot of creative fun. There a lot of ana- glyphic 3D tutorials online that show additional and alternative techniques. So check 'em out and give it a try! SDG Figure 12: The same image with tree levels of depth. The image appears to gradually recede into the picture plane. Figure 13: A selection generated from an alpha channel with a black to white gradi- ent is loaded and the red channel is selected. Figure 14: A minus value in the Offset filter moves the red channel horizontally to the left.

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