1. An method of processing an image recorded by an imaging device; said method comprising the steps of: a) providing an image comprising an array of adjacent elements each corresponding to a respective part of the image and having a respective intensity value associated therewith; b) processing said intensity values to determine an intensity contrast value for each respective element according to differences in intensity values between respective adjacent elements; c) providing a depth value for each element corresponding to the distance between the imaging device and at least part of an image forming object represented in the image by the respective element; d) processing said depth values to determine a depth contrast value for each respective element according to differences in depth values between respective adjacent elements; and, e) processing said intensity contrast values and said depth contrast values to identify at least one area of the image corresponding to one or more respective objects in the image being processed.