The following example shows the effect of a time varying LCSS matching envelope size on the match results. We vary both the temporal and spatial thresholds by linearly increasing or decreasing either one, or both, over time.

We vary both the temporal and spatial thresholds by linearly increasing or decreasing either one, or both, over time.

The query is a short walking motion 70 keyframes long (or 2.9 seconds).

Matching parameters: LCSS, rotational parameterization, full-body area, no global position, no global rotation.

Note: ε=1:0.1 means ε varies from 1 to 0.1 where ε=1 at the start of query, and ε=0.1 at the end of the query.

With a similar effect as weights for the Euclidean and DTW matching, we vary the spatial threshold for different body areas. For example, we can give more importance to the upper-body joints and less to the lower-body joints. This is done by giving the upper-body joints smaller spatial thresholds, and lower-body joints larger spatial thresholds.

In this examples, we vary the upper-body versus the lower-body joint spatial thresholds to see the impact on the search results. We keep the temporal threshold δ=5 fixed for all examples.

The query is a short walking motion 70 keyframes long (or 2.9 seconds).

Matching parameters: LCSS, rotational parameterization, full-body area, no global position, no global rotation.

Note: ε^upper=0.8 means that the upper body degrees of freedom are given a spatial threshold of 0.3. These include the head, back, shoulders and arms. ε^lower   refers to all remaining joints.