The <PhotoOverlay> element allows you to geographically locate a photograph on the Earth and to specify viewing parameters for this PhotoOverlay. The PhotoOverlay can be a simple 2D rectangle, a partial or full cylinder, or a sphere (for spherical panoramas). The overlay is placed at the specified location and oriented toward the viewpoint.
D. Howard, и S. Roberts. Proceedings of the 2000 Congress on Evolutionary
Computation CEC00, стр. 1297--1303. La Jolla Marriott Hotel La Jolla, California, USA, IEEE Press, (6-9 July 2000)