1. A method of image processing for conversion of an image in a sequence of images, comprising the steps of: associating each respective pixel of an image or a part of the image with a respective motion value indicative of a degree of inter-image motion for that pixel; adjusting the motion value of each respective pixel based upon the motion value of a secondary pixel found within a first region of a first predetermined size substantially centred upon each said respective pixel, said secondary pixel being that pixel whose associated motion value is indicative of the greatest motion of any pixel in the first region; and then adjusting the motion value of each respective pixel based upon the motion value of a secondary pixel that lies within a second region of a second predetermined size substantially centred upon each said respective pixel, said secondary pixel being that pixel whose associated motion value is indicative of the least motion of any pixel in the second region; and then selecting contributions from a first conversion process and/or a second conversion process for each respective pixel dependant upon its respective associated adjusted motion value.