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. 2018 Dec 12;5(4):044506. doi: 10.1117/1.JMI.5.4.044506

Fig. 3.

Fig. 3

Illustration of cell detection results using Laplacian of Gaussian LoG filter. (a) Original malaria RGB color image, (b) negative of green channel being enhanced using histogram stretching, (c) local extrema of the LoG response that indicate the approximate centroids of the individual cells, (d) cell centroid weights using the distance transform of the cell foreground mask using Otsu thresholding, and (e) cell initial markers using weighted LoG blob responses.