Automated Detection of Red Lesions Using Superpixel Multichannel Multifeature

Figure 7

Blood vessels extraction results. (a)–(d) show the different detection results with varying sizes of disc-shaped structuring elements 2, 3, 4, and 5, respectively; (e) the combination result of (a)–(d); (a₁)–(d₁) are the blood vessels map differences between (e) and (a)–(d), respectively.