Macrophage image segmentation by thresholding and subjective surface method

Abstract

We present two level-set method approaches to segmentation of 2D macrophage images. The first is based on the Otsu thresholding and the second on the information entropy thresholding, both followed by the classical subjective surface (SUBSURF) method. Results of both methods are compared with the semi-automatic Lagrangian method in which the segmentation curve evolves along the edge of the macrophage and it is controlled by an expert user. We present the comparison of all three methods with respect to the Hausdorff distance of resulting segmentation curves and we compare also their perimeter and enclosed area. We show that accuracy of automatic SUBSURF method is comparable to the results of the semi-automatic Lagrangian segmentation.