is it possible to find the distance between the legs of a walking person using MATLAB? human walking video is the input..
As an alternative, you can use Skeletal tracking with the Kinect for Windows sensor. This problem will get reduced to distance computation between the ankle/Knee joints(3D points), whichever fits your definition for distance.
Note: Kinect for Windows is supported in MATLAB through Image Acquisition Toolbox, R2013a onwards.
No. You cannot determine the distance between legs of someone in a hoop skirt with a sufficiently long train.
How is "distance between legs" mathematically defined? Legs consists of at least 3 rigid segments (simulating the 26 bones of the feet seems to be over-doing here) with a spatial extent. While the distnace between the hip-joint centers is (almost) constant, the "distance" between the lower leg segments or the feet needs a meaningful definition before we can discuss, if this can be determined by a 2D-projected movie.