Improved Accuracy and Robustness of a Corneal Endothelial Cell Segmentation Method Based on Merging Superpixels
Juan P. Vigueras Guillén (TU Delft - ImPhys/Quantitative Imaging, Rotterdam Ophthalmic Institute)
Angela Engel (Rotterdam Ophthalmic Institute)
Hans G. Lemij (Rotterdam Eye Hospital)
Jeroen G.J. Van Rooij (Rotterdam Eye Hospital)
Koen Vermeer (Rotterdam Ophthalmic Institute)
L. J. Van Vliet (TU Delft - ImPhys/Computational Imaging)
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Abstract
Clinical parameters related to the corneal endothelium can only be estimated by segmenting endothelial cell images. Specular microscopy is the current standard technique to image the endothelium, but its low SNR make the segmentation a complicated task. Recently, we proposed a method to segment such images by starting with an oversegmented image and merging the superpixels that constitute a cell. Here, we show how our merging method provides better results than optimizing the segmentation itself. Furthermore, our method can provide accurate results despite the degree of the initial oversegmentation, resulting into a precision and recall of 0.91 for the optimal oversegmentation.