Wide Area Video Image Storage Techniques

Logos Technologies (Logos) will design an innovative imagery compression system capable of coding and storing airborne Wide Area Persistent Surveillance (WAPS) imagery at 20 Gigapixel/second rates (2 Gigapixel frames, 10 Hz frame rate). The proposed Logos system will co-register and combine frames from the WAPS image sequence into reference imagery, which will represent the stable background scene used by the compression coder/decoder (codec). Salient scene motion (moving vehicles, humans, etc.) will be detected by differencing frames from the reference data, and this data will be filtered, compressed, coded and stored. Frame data will be reconstructed using the reference data, frame to reference registration parameters, and the coded residual difference data. The Logos team will validate its design by building a prototype system and evaluating codec quality with standard image and motion imagery quality metrics, as well as measures based on imagery analysis tasks. Concurrent to the codec design and experimentation, Logos will specify and validate an airborne processing and storage system properly sized to the WAPS 20 Gpixel/second stream.