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Implementation of a target acquisition tracker on real time video images can be made to run with more modest processors by using intensity thresholds. Pixels are ignored in real- time based on this threshold setting, hence reducing processor time. This paper considers issues when a real-time histogram is presented to a user and how the decision can be made rapidly by a user. This paper also describes a common tracking algorithm adapted to using this threshold, and a hybrid mode. The paper will also show how a system's user interface is designed to rapidly gather this information without overloading the user.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

This paper describes a coherent detection receiver (CDR) with adaptive image rejection capability which is also compatible with existing monolithic integrated optics and MMIC technology. It details the component selection and circuit layout tradeoffs that were considered for the design and fabrication of the CDR in monolithic IC format. An optical `half receiver' IC with waveguides, phase shifter, 3 dB coupler, and balanced mixer diodes has been constructed and tested. Measurements and results for this chip are given and discussed. An initial design and simulated results for the microwave (intermediate frequency) IC are also given and discussed.