In a method for controlling a multi-color output of an image of a medical object for assisting medical personnel, the medical object is illuminated with light with an illumination spectrum. By means of an image sensor, image data are acquired for a group of one or more color channels. Image information concerning an additional color channel, which is not among the group of one or more color channels, is generated depending on the acquired image data. An image output device for multi-color output of the image is controlled depending on the acquired image data and the acquired image information.
