1. A method for generating an output image by reducing the size of an input image, comprising: determine for pixel locations in said output image corresponding areas in said input image, fetch input image pixel values from said corresponding areas, calculate output pixel values for each of said pixel locations in said output image using a size reducing algorithm, and insert the output pixel values in the output image, wherein said output pixel values are obtained by adding to a lower resolution background representation A, which is obtained by processing the corresponding areas in said input image to a single low pass filtered area value, a value obtained by amplifying a MED, which represents a pixel value in said input image area that most deviates from said lower resolution background representation A, with a significance factor SF, which represents a relative significance of higher spatial frequency detail with respect to a noise level present in the corresponding areas of the input image.