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Table 2 Rules to find intersections between two polygons [24, 25]

From: Context-aware visual analysis of elderly activity in a cluttered home environment

Rules to classify intersection between unlike edges are:

   Rule 1: (LC ∩ LS)||(LS ∩ LC) → LI

   Rule 2: (RC ∩ RS)||(RS ∩ RC) → RI

   Rule 3: (LS ∩ RC)||(LC ∩ RS) → MX

   Rule 4: (RS ∩ LC)||(RC ∩ LS) → MN

Rules to classify intersection between like edges are:

   Rule 5: (LC ∩ RC)||(RC ∩ LC) → LI and RI

   Rule 6: (LS ∩ RS)||(RS ∩ LS) → LI and RI