The invention relates to a driving assistance
system and a real-time warning and prompting method for a vehicle. Image data of collected targets in front of a current vehicle is collected through an image collection module, then, a lane target in the image data is recognized by a traffic target recognition submodule, a
region of interest is marked out according to the recognized lane target, and the
region of interest is served as a key recognized target; and the image collection module is controlled by a
data processing module to take a lane corresponding to the
region of interest as an image collection target. Therefore, after the region of interest is mainly detected, the image collection module is capable of collecting image data required by a user more in time without collecting all forward data, therefore not only is collection capacity of the image collection module lowered but also
data processing capacity of the
data processing module is reduced, so that calculation amount of the whole
system is reduced, calculation speed is accelerated, and warning
response time is shortened.