1. A method of operating a motion-capture system responsive to available computational resources, the method including: assessing a level of image acquisition resources available using benchmarking of acquisition components of a system; adjusting, in response to the level of image acquisition resources, one or more image acquisition parameters, wherein the adjustable image acquisition parameters include frame size and frame capture rate; acquiring image data in a sequence of digital image frames that capture an object of interest, compliant with the adjusted image acquisition parameters; and analyzing the image data to detect the object and to approximate an object contour.