Dr. Alex Philp Profile

Dr. Alex Philp

at Adelos

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Proceedings Article | 4 February 2009 Paper

Real-time application of digital watermarking to embed tactical metadata into full motion video captured from unmanned aerial systems

Alex Philp, Brett Bradley, John Stach, Tony Rodriguez

Proceedings Volume 7254, 725410 (2009) https://doi.org/10.1117/12.814319

KEYWORDS: Digital watermarking, Signal to noise ratio, Video, Video compression, Image compression, Sensors, Visibility, Cesium, Image processing, Error analysis

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A persistent challenge with imagery captured from Unmanned Aerial Systems (UAS), is the loss of critical information such as associated sensor and geospatial data, and prioritized routing information (i.e., metadata) required to use the imagery effectively. Often, there is a loss of synchronization between data and imagery. The losses usually arise due to the use of separate channels for metadata, or due to multiple imagery formats employed in the processing and distribution workflows that do not preserve the data. To contend with these issues and provide another layer of authentication, digital watermarks were inserted at point of capture within a tactical UAS. Implementation challenges included traditional requirements surrounding, image fidelity, performance, payload size, robustness and application requirements such as power consumption, digital to analog conversion and a fixed bandwidth downlink, as well as a standard-based approach to geospatial exploitation through a serviceoriented- architecture (SOA) for extracting and mapping mission critical metadata from the video stream. The authors capture the application requirements, implementation trade-offs and ultimately analysis of selected algorithms. A brief summary of results is provided from multiple test flights onboard the SkySeer test UAS in support of Command, Control, Communications, Computers, Intelligence, Surveillance and Reconnaissance applications within Network Centric Warfare and Future Combat Systems doctrine.

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