Unit identifying movable body including brightness data extraction facility for extracting data from multiple visual ranges and unit monitoring motor vehicle also units respectively for space and time differential computing facilities

摘要

The unit has a system (12) to extract brightness data from a number of visual ranges (WX0-WXn). A computer unit (32) determines a spatial and a temporal alteration rate of the brightness data between adjacent visual ranges. A unit (36) is provided to determine movement of a movable body between the visual ranges, from the spatial and temporal alteration rates of the brightness data. An Independent claim is included for a method for using the device.