Image processing device implemented method for generating at least one merged perspective viewing image, which shows a motor vehicle and an environmental region of the motor vehicle from a dynamically variable perspective (P1, P2, P3) of a dynamic virtual camera and which is determined based on raw images of at least two vehicle-side cameras (5a, 5b, 5c, 5d) and based on a perspective model of the motor vehicle dependent on the perspective (P1, P2, P3) of the virtual camera, comprising the steps of: a) determining whether the merged perspective viewing image comprises at least one disturbing signal as aliasing afflicted image area, and if so, identifying the at least one disturbing signal afflicted image area within the merged perspective viewing image; b) determining a severity of disturbing signals within the at least one disturbing signal afflicted image area, wherein the severity describes whether the disturbing signals in the image area are strong enough to be visible in the merged perspective viewing image at all when exceeding a predetermined severity-threshold; c) determining a significance of the disturbing signals in dependence on the perspective (P1, P2, P3) of the virtual camera, wherein at least one geometric parameter of the image area with the perspective (P1, P2, P3) of the virtual camera is characterized by the significance; d) determining a degree of coverage of the disturbing signal afflicted image area by the model of the motor vehicle to be inserted into the merged perspective viewing image in dependence on the perspective (P1, P2, P3) of the virtual camera; e) reducing the disturbing signals for the merged perspective viewing image only, if the severity of the disturbing signals exceeds a predetermined severity-threshold and the significance of the disturbing signals exceeds a predetermined significance-threshold and the degree of coverage remains below a predetermined degree of coverage-threshold. a) determining whether the merged perspective viewing image comprises at least one disturbing signal as aliasing afflicted image area, and if so, identifying the at least one disturbing signal afflicted image area within the merged perspective viewing image; b) determining a severity of disturbing signals within the at least one disturbing signal afflicted image area, wherein the severity describes whether the disturbing signals in the image area are strong enough to be visible in the merged perspective viewing image at all when exceeding a predetermined severity-threshold; c) determining a significance of the disturbing signals in dependence on the perspective (P1, P2, P3) of the virtual camera, wherein at least one geometric parameter of the image area with the perspective (P1, P2, P3) of the virtual camera is characterized by the significance; d) determining a degree of coverage of the disturbing signal afflicted image area by the model of the motor vehicle to be inserted into the merged perspective viewing image in dependence on the perspective (P1, P2, P3) of the virtual camera; e) reducing the disturbing signals for the merged perspective viewing image only, if the severity of the disturbing signals exceeds a predetermined severity-threshold and the significance of the disturbing signals exceeds a predetermined significance-threshold and the degree of coverage remains below a predetermined degree of coverage-threshold.