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- W1572352389 abstract "This paper describes an extended-image tracking technique based on the maximum likelihood estimation. The target image is assume to have a known profile covering more than one element of a focal plane detector array. It is assumed that the relative position between the imager and the target is changing with time and the received target image has each of its pixels disturbed by an independent additive white Gaussian noise. When a rotation-invariant movement between imager and target is considered, the maximum likelihood based image tracking technique described in this paper is a closed-loop structure capable of providing iterative update of the movement estimate by calculating the loop feedback signals from a weighted correlation between the currently received target image and the previously estimated reference image in the transform domain. The movement estimate is then used to direct the imager to closely follow the moving target. This image tracking technique has many potential applications, including free-space optical communications and astronomy where accurate and stabilized optical pointing is essential." @default.
- W1572352389 created "2016-06-24" @default.
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- W1572352389 date "1999-07-21" @default.
- W1572352389 modified "2023-10-01" @default.
- W1572352389 title "The Extended-Image Tracking Technique Based on the Maxium Likelihood Estimation" @default.
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