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Real-time motion processing

Real-time motion processing

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The meaning of real-time depends on the application, however, it usually implies that processing is performed quickly with respect to the dynamics of the system under consideration. When estimating motion for autonomous navigation, there are two constraints that define the meaning of 'real-time'. Both constraints derive from the need to accurately capture environmental dynamics. The first limit is related to the imaging system and the second is imposed by the navigation problem. Temporal image sampling must occur sufficiently quickly to avoid temporal aliasing. Motion processing must proceed with an update rate and latency that ensures navigation decisions are made using the true current state of the environment. In this section it will be shown how scale space can be used to avoid temporal aliasing and that the inclusion of range information in scale space leads to a dynamic scale space which removes the overhead associated with more traditional approaches.

Inspec keywords: image sampling; navigation; distance measurement; antialiasing; motion estimation

Other keywords: temporal aliasing; real-time motion processing; range information; temporal image sampling; dynamic scale space; autonomous navigation; motion estimation

Subjects: Optical, image and video signal processing

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