1. A method for detecting a potential collision object in an image, the method comprising the acts of: acquiring, by a camera arranged in a motor vehicle, the image; providing, by the camera, a digital source image of a predefined image size as a function of the acquired image; generating a first intermediate image of a predefined first intermediate image size by reducing a resolution of the digital source image in a sense of reducing pixels; generating a second intermediate image of the predefined image size based on the first intermediate image, the generated second intermediate image including both the first intermediate image and additional pixels not included in the first intermediate image; analyzing, via a detector, the second intermediate image to determine whether an object of a predefined object category is located in the second intermediate image, wherein the detector analyzes a predefined image detail and detects the object of the predefined object category of a predefined object size range, wherein a first pixel value is determined as a function of pixel values of the digital source image or of the first intermediate image, and the additional pixels of the second intermediate image, which are not included within the first intermediate image, have the first pixel value.