| 摘要 |
A method for locating the boundary of an object in a digitised image, includes determining an initial contour by identifying a zone of the digitised image within the object, or of a modified image derived by processing the digital image, which zone has the minimum mean greyscale in the image. An active contour model is applied to locate the boundary, wherein the vertices of the contour are iteratively varied under the influence of internal forces that push the vertices towards a perfect polygon and external forces determined from the original digitised image and/or the modified image. |
