Automated Detection of Red Lesions Using Superpixel Multichannel Multifeature

Figure 6

A series of morphological operations are used for blood vessels detection. (a) , reduction of high intensity structures; (b) , sum of morphological openings; (c) , morphological reconstruction by dilation; (d) , regional minimum and close operation (e.g., we take ).

(a)

(b)

(c)

(d)