Spatial induction policies for scalable depth coding

An edge-adaptive depth coding proposed in [1] uses a multi-resolution field of breakpoints to encode edges in a scene´s geometry. In order to remain efficient, this scheme uses spatial induction to infer the location of breakpoints from the surrounding geometry where possible. This intelligence means only a subset of the breakpoints need to be encoded. The original proposal employs a simple policy, using linear interpolation between known points to induce breakpoints. Whilst this is effective, a more sophisticated policy could better exploit the available breakpoint data in synthesising edges. This paper presents our findings regarding the potential benefits of higher order spatial induction policies (SIPs).