In Pictures: 8 iPad Apps That Are Complex, Powerful and Advanced

Most people don't think of the iPad as a high-end computing device. These eight apps prove otherwise.

NGRAIN: 3-D Augmented Reality Player This app, free for NGRAIN Augmented Reality users, provides a 3-D augmented reality overlay on top of a physical object. It might be used to explain how to fix a part in a vehicle or overlay a medical drawing over a piece of human anatomy. The app uses millions of data points, or voxels, that are fed to the iPad in real-time. Each voxel can contain measurements, such as the temperature of the object or size. The diesel pump shown at left consists of 376 parts and 1.2 million polygons — yet NGRAIN manages to reduce this massive CAD image down to about 7MB to work on the iPad.

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