METHOD OF IDENTIFYING RELEVANT AREAS IN DIGITAL IMAGES, METHOD OF ENCODING DIGITAL IMAGES, AND ENCODER SYSTEM

摘要

A method of identifying relevant areas in digital images is provided. The method comprises: a step (S02) of receiving information representative of pixels in a first digital image; and a step (S03) of calculating a spatial statistical measure for groups of neighboring pixels in the first image to form a group value for each group of pixels. In addition, the method comprises: a step (S04) of calculating differences between group values; and a step (S05) of comparing the differences to a predetermined threshold value. If the difference is equal to or above the threshold value, the group is identified as relevant (S06), and if the difference is below the threshold value, the group is identified as not relevant (S07). A method of encoding digital images based on the identification of relevant and non-relevant areas is also provided, in addition to a digital encoder system.