1. A method comprising: receiving an image from an imager including a digital watermark embedded by a watermark embedder co-located on-chip with the imager, wherein the watermark embedder includes a signal generator and a signal combiner, wherein the watermark embedder further includes a human visual system module, wherein the digital watermark comprises location information; determining viewing angle specifics of the received image; decoding the digital watermark to obtain the location information; identifying a map depicting a location and viewing angle corresponding to the location information and viewing angle specifics, and providing the map for access over a computer network.