| 摘要 |
Digital watermarking technology is used in conjunction with compressed video captured from aerial, unmanned apparatus, such as satellites and aircraft. One implementation includes a method of capturing video depicting at least a portion of the earth's surface, the video captured by an aerial, unmanned apparatus; compressing the captured video; and hiding a first digital watermark in the compressed captured video through alterations to data representing the compressed video. The first digital watermark is generally imperceptible to a human observer of the video. And the digital watermark has a plural-bit payload including at least geographical metadata associated with the captured video. Other implementations are also provided.
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