Figure 1

TRiP successfully detects leaf movement from CG plant model with known period. Images of growing Arabidopsis seedlings were digitized and used to animate a time series of leaf movement. (A) A trough (T =12, subjective dusk) and (B) a peak image (T = 24, subjective dawn) keyframe were each used to produce two animations that demonstrated plant leaf movement with defined circadian periods, which were assessed using TRiP. (C) Visualization of motion field at T =24. (D) Traces of simulated leaf movement with periods of 24 h or 25 h measured with TRiP.