| 摘要 |
<p>A method and apparatus for deriving a representation of an image by processing signals corresponding to the image is described. The method includes deriving a two-dimensional function (T(d, ?)), such as a Trace transform of the image, and decomposing, for instance by sub-sampling, the two-dimensional function (T(d, ?)) in at least one of its two dimensions, to obtain a reduced resolution Trace transform. The decomposed, two dimensional function is then used to derive the representation of the image.</p> |
