1 research outputs found
Complementary texture and intensity gradient estimation and fusion for watershed segmentation
In this paper, we identify two current challenges
associated with watershed segmentation algorithms which
attempt to fuse the visual cues of texture and intensity. The
first challenge is that most existing techniques use a competing
gradient set which does not allow boundaries to be
defined in terms of both visual cues. The second challenge
is that these techniques fail to account for the spatial uncertainty
inherent in texture gradients. We present a watershed
segmentation algorithm which provides a suitable solution
to both these challenges and minimises the spatial uncertainty
in boundary localisation. This is achieved by a novel
fusion algorithm which uses morphological dilation to integrate
intensity and texture gradients.Aquantitative and qualitative
evaluation of results is provided demonstrating that our
algorithm outperforms three existing watershed algorithms