Indirect vision system, indirect vision display method, and interactive electronic rearview mirror system for vehicles

The indirect vision system includes a first camera device, a second camera device, a display device, and a processor. The first camera device shoots towards a first scene to capture a first image frame. The second camera device shoots towards a second scene to capture a second image frame. The display device is connected to the second camera device and displays the second image frame. The processor computes a six-axis moving direction of a target point in a three-dimensional space by using the current first image frame and another first image frame of a reference time; computes a displacement between the target point and the display device in the six-axis moving direction; and changes a field of view of the second image frame shown on the display device according to the displacement.