A Motion Detection Algorithm Using Local Phase Information

Figure 9

Top: motion detection of the “highway video” using the phase-based algorithm (a), the Reichardt motion detector (b), and the Barlow-Levick motion detector (c). Red arrows indicate detected motion and its direction. Bottom: the contrast of the video was artificially reduced by 5-fold and the mean was reduced to of the original. The red arrows are duplicated from the motion detection result on the original video as in top. Blue arrows are the result of motion detection on the video with reduced contrast. If motion is detected both in the original video and in the video with reduced contrast, then the arrow is shown in magenta (as a mix of blue and red) (see Supplementary Video S2 for full video).

(a)

(b)

(c)