Connectivity

    Connectivity between pixels is an important concept used in establishing boundaries of objects. We consider two types of connectivity:
1)
4-connectivity: two pixels p and q are 4-connected if q is in the set of four neighbors of p as shown in Fig. 5.3(a).
2)
8-connectivity: two pixels p and q are 8-connected if q is in the set of eight neighbors of p as shown in Fig. 5.3(b).