| 摘要 |
<p>The invention concerns a method for encoding a digital image for producing a bit stream representing said image, the bit stream length depending on the quality of the desired representation, characterised in that it consists in: a) defining, on the domain of the image to be encoded, a hierarchical meshing comprising a plurality of nested meshes whereof the mesh peaks are said image pixels; b) determining, for each mesh of said hierarchical meshing, a brightness variation between the image to be encoded and an interpolated image obtained from the nested meshing peaks whereto pertains the mesh concerned; and c) inserting in the bit stream position, brightness and chrominance values of the peaks of meshes whereof the brightness variation is higher than a threshold variation. The invention is useful for encoding fixed or animated images with speed reduction (compression).</p> |
