Nasopharyngeal carcinoma lesion extraction using clustering via semi-supervised metric learning with side-information

In this paper, we consider the extraction of nasopharyngeal carcinoma lesion from magnetic resonance images as a clustering problem. The metric used by the clustering algorithm in our proposed method is a new spatially weighted metric, which is learned by semi-supervised metric learning with side-information. Several experiments have been conducted to compare the performance of the proposed metric with similar metrics for the tumor extraction.