|
 This
great new feature in MultiLab means any movie of motion (for
example throwing a ball) can be converted into data. This
can be taken from the Fourier library, filmed with your own
video camera or a previously recorded experiment on MultiLab.
MultiLab's Video Motion
Analyzer enables you to capture position and time from video
movies, convert this to data sets and analyze the data with
all of MultiLab's analysis tools the same way you would
analyze data from the data logger. You can capture one-body
motion or two-body motion. You can select the origin and rotate
the coordinate system.
 With
the Video Motion Analyzer you can also capture video movies
either directly from video camera connected to the computer
or from an external video source such as VCR.
First scale an object from the
movie to real size (for example the ball) and then click with
the mouse frame by frame and the coordinates are automatically
transferred to graph format. So not only is the data directly
put into graph format, but the picture automatically moves
to the next frame.
Later the data can be analyzed
using the sophisticated MultiLab analysis tools. MultiLab
converts the body's track into two data sets X position
(x coordinates) and Y position. By default the two data sets
are displayed in the graph as a function of the time, but
you can use the edit graph tool to display the track (Y vs.
X).
At anytime you can change the
origin and direction of the coordinates system. You can also
change the coordinates of individual points by relocating
them on the video frame.
|
