We have proposed a general, efficient, and easy to use semiautomatic algorithm for performing the simultaneous fuzzy segmentation of multiple objects. These

Figure 12.19: A 3-D view of the segmented trachea and bronchi shown in Figs. 12.17 and 12.18.

characteristics make the proposed method a valuable tool for interactive segmentation, since a low-quality segmentation (as judged by the user) can be corrected by the removal or introduction of new seed spels and a series of segmentations can be produced until a satisfactory one is achieved. The method can also be transformed into a fully automatic one if sufficient prior information is available pertaining the objects to be segmented.

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