Rear camera backup assistance with touchscreen display using two points of interest

A backup assist apparatus for a motor vehicle to assist a backup maneuver wherein a first point of interest on the vehicle is moved toward a second point of interest remote from the vehicle, comprising:

• an image sensor for detecting a rearward directed image from the vehicle;
• an electronic display visible to a driver of the vehicle;
• and
• a camera module coupled to the electronic display and the image sensor generating a rear contextual view on the electronic display in response to the rearward directed image, wherein the camera module is responsive to manual user input to configure the placement of a zoom window on the electronic display that includes the second point of interest, wherein the camera module enlarges on the electronic display the portion of the rear camera view contained in the zoom window, wherein the camera module is responsive to manual input to identify the location of the second point of interest within the enlarged zoom window, wherein the camera module transforms the identified location of the second point of interest into target positional coordinates within the rear contextual view, wherein the camera module redisplays the rear contextual view, wherein the camera module displays a target icon at the target positional coordinates in the rear contextual view, wherein the camera module is responsive to manual input to identify on the rear contextual view the location of the first point of interest, wherein the camera module transforms the identified location of the first point of interest into starting positional coordinates within the rear contextual view, wherein the camera module displays a start icon at the starting positional coordinates in the rear contextual view, wherein the camera module determines a target line between the target positional coordinates and the starting positional coordinates, wherein the camera module displays a path line icon in the rear contextual view corresponding to the determined target line, wherein the camera module displays a bearing line in the rear contextual view extending from the start icon in a direction parallel with the axis of the vehicle projected into the rear contextual view, wherein the camera module re-determines the target positional coordinates as the rear contextual view shifts during the backup maneuver, and wherein the camera module updates the target icon and the path line icon in response to the re-determined target positional coordinates.