Embedding location data in video
First Claim
1. A method of steganographically marking video captured from an aerial platform, the video comprising at least a first video frame and a second video frame, the first video frame depicting a first terrestrial area having a first geo-location and the second video frame depicting a second terrestrial area having a second geo-location, said method comprising:
- providing a first steganographic signal in the first video frame, the first steganographic signal comprising first location data corresponding to at least the first geo-location; and
providing a second steganographic signal in the second video frame, the second steganographic signal comprising at least a representation of a difference between the first geo-location and the second geo-location.
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Accused Products
Abstract
Digital watermarking technology is used to convey location data for images or objects depicted in video. A digital watermark may associate geovector information with the video or object and areas depicted in the video. A geovector may include location coordinates such as longitude, latitude, altitude, etc. In one implementation, geovector information is embedded within a video frame so as to correspond with an area depicted in the video frame'"'"'s center or off-center location. In a second implementation, a geovector includes an identifier or indexing protocol for use in a video management system.
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Citations
7 Claims
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1. A method of steganographically marking video captured from an aerial platform, the video comprising at least a first video frame and a second video frame, the first video frame depicting a first terrestrial area having a first geo-location and the second video frame depicting a second terrestrial area having a second geo-location, said method comprising:
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providing a first steganographic signal in the first video frame, the first steganographic signal comprising first location data corresponding to at least the first geo-location; and providing a second steganographic signal in the second video frame, the second steganographic signal comprising at least a representation of a difference between the first geo-location and the second geo-location. - View Dependent Claims (2, 3)
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4. A method of digitally watermarking video comprising:
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digitally watermarking a first area in a first video frame to include a first payload associated with at least a ground coordinate of the first area; and digitally watermarking a second area in a second video frame to include a second payload that represents a difference between a ground coordinate of the second area and the first area ground coordinate. - View Dependent Claims (5)
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6. A method of digitally watermarking a video sequence comprising:
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inserting first digital watermark data at a first location within the video sequence, the first digital watermark data signaling that the first location corresponds with a geographical location; and inserting a plurality of digital watermark data throughout the video sequence, wherein each of the plurality of digital watermark data—
except for the first digital watermark data—
comprises or links to a change in geographical coordinates with respect to the first location or to the geographical location. - View Dependent Claims (7)
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Specification