a vision system includes an image capturing arrangement for producing a plurality of first image signals of a scene based on electromagnetic energy received from the scene . a platform supports at least the image capturing arrangement for selectively positioning and repositioning the image capturing arrangement so that it images a series of different scenes . a memory is provided for storing scene - dependent parameters . at least one signal processor is operatively associated with the image capturing arrangement and the memory . the signal processor is configured to utilize at least one of the first image signals representing each of the scenes being imaged to adjust at least one image - capturing parameter to enhance image quality of the respective scene . the signal processor is also configured to utilize at least two of the first image signals received at different times that represent each of the scenes being imaged to generate , based on at least one predetermined criterion , a second image signal representing object motion arising in each of the scenes . the image - capturing parameter and the predetermined criterion are established on a scene by scene basis and stored in the memory for use by the signal processor upon imaging any given scene a subsequent time .