1. A method for detecting a potential collision object in an image, the method comprising the acts of: acquiring, by an imaging unit arranged in a motor vehicle, the image; providing, by the imaging unit, 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, the generated second intermediate image comprising 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.