| 摘要 |
The invention relates to a method in which the edge (disc) of the papilla is detected in fundus images and the form thereof can be mathematically reproduced (approximately). According to the claimed method for the automatised detection and segmentation of papilla in fundus images, based on a fundus image in suitable spectral ranges of coloured images and with total reproduction of the papilla, four sectors are determined, after localising the papilla range and selecting the start point Mn (n=0), for determining the grey value progressions in suitable spectral ranges, the gradient progressions are calculated from the grey value progressions of the four sectors and from the global minimum values in each sector, the centre point of the resulting contour is determined as a start point Mn+1 for the new method step b). Said method is then completed when the deviation between the start point Mn+1 and the start point Mn lies within a determined tolerance. The inventive method for the automatised detection and segmentation of papilla in fundus images is, in particular, for use in fundus cameras. |
