Fig. 8.

Boundary ownership computation. (A) A patch of pixels in the first frame, showing a segment of the motion boundary in black. (B) Motion fields on the two sides, along strips parallel to the boundary (bottom strip in red; top strip in green). Arrows show the optical flow V₁ and V₂ in these strips. (C) The motion boundary in the second frame (solid black) has been displaced from its previous position (shaded region) according to the motion V_b. This motion of the boundary is more similar to the motion V₁ of the top region (green arrows) than to V₂, and therefore, the boundary is owned by the top region (Sundberg et al., 2011). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)