Reverse Assist Method and System, Image Processor and Corresponding Drive Assist System

The present disclosure provides a reverse assist method for a vehicle, comprising: transforming an i-th image in a reversing direction acquired by a camera unit at time Tinto an i-th top plan view, wherein i≥1; generating an i-th result image based on the i-th top plan view, wherein when i is greater than 1, the i-th top plan view and an intermediate image are spliced to generate an i-th result image; outputting the i-th result image; and wherein the intermediate image is a view transformed from an image of an outside environment in the reversing direction acquired at a time earlier than Ti, and the intermediate image is updated according to a predetermined condition during reversing.