Figure 7.

Protrusion velocity map example

The heatmap is colored to represent the cell edge velocity ranging from -10 μm/min to +10 μm/min. The red-colored region indicates a portion of the protruding cell edge, and the blue colored region indicates a portion of the retracting cell edge. In cellular dynamics of morphology, protrusion means the cell edge is moving away from the cell body and retraction means the cell edge is moving toward the cell body. The horizontal axis represents the duration of the movie for which the cell was observed, and the vertical axis represents window id or fragments of cell edge. Given a cell edge with two endpoints, the window id 1 represents one endpoint, and the window id 140 represents the other endpoint.