Analysis of emergent patterns in crossing flows of pedestrians reveals an invariant of ‘stripe’ formation in human data
Fig 12
Examples of the edge-cutting process.
Edge-cutting process for two trials with (a) α = 63.8° and (b) α = 154.1°. The blue and red arrows denote the directions of motion for the two groups of pedestrians shown by blue and red dots respectively. The instances shown in this figure goes forward in time from (i) to (iii) and backward in time from (iii) to (v). In (i) the instance shown is Ti − 1, when all the edges within a group are intact. (ii) Shows the situation when the edges have started to cut and stripes are gradually being formed at (Ti + Tf)/2. (iii) Shows the situation at Tf + 1 when all probable edge-cuts have taken place and the stripes have completely been formed. (iv) and (v) shows the instances as in (ii) and (i) respectively but with the visualisation of all the stripes that are completely formed only after Tf.