drawing trajectory of detected people in video

Im studying kalman filtering and people detection, and using Matlab example "multiObjectTracking.m" with my own video, my idea is detecting the people in the video but also display the trajectory of the people, drawing it on the video with a line or something, is there a function or method to do that? Something that uses the collected data to draw the trajectory of the detected object like the image below xD

Answer 1

[Dima Lisin]

There is currently no special built-in function to draw the trajectories. But once you have the points, you can use the insertShape(I, 'Line', ...) to draw a polyline, and/or you can use the insertMarker() function to mark the individual points with markers of a consistent color.

[TIMOTHY YIN HONG]

i don't get it. is it insertShape(input , 'Line', [red] );

something like this?

[Walter Roberson]

 insertShape(input , 'Line', [xstart, ystart, xend, yend], 'Color', 'r' );

for appropriate xstart, ystart, xend, yend values.

Answer 2

[Katie Doggett]

Did you ever figure this out? I'm trying to do something similar

[Image Analyst]

Once you have the trajectory coordinates, you can simply use plot() to draw line/curve into the overlay above the image.