Mixed Signature: An Invariant Descriptor for 3D Motion Trajectory Perception and Recognition

<table>The subcoordinates of the central symmetrical motion trajectory. (a) is <svg height="16.450001" id="M83" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 29.3125 16.450001" width="29.3125" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.162)"><use xlink:href="#x1D458"></use></g><g transform="matrix(.017,-0,0,-.017,8.613,12.162)"><use xlink:href="#x2F"></use></g><g transform="matrix(.017,-0,0,-.017,15.616,12.162)"><use xlink:href="#x1D458"></use></g>
<g transform="matrix(.012,-0,0,-.012,24.162,16.25)"><use xlink:href="#x1D460"></use></g>
</svg> and (b) is <svg height="16.299999" id="M84" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 28.637501 16.299999" width="28.637501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.013)"><use xlink:href="#x1D70F"></use></g><g transform="matrix(.017,-0,0,-.017,8.273,12.013)"><use xlink:href="#x2F"></use></g><g transform="matrix(.017,-0,0,-.017,15.276,12.013)"><use xlink:href="#x1D70F"></use></g>
<g transform="matrix(.012,-0,0,-.012,23.487,16.088)"><use xlink:href="#x1D460"></use></g>
</svg>.</table>

Mathematical Problems in Engineering

fig10

Figure 10

Figure 10: Mixed Signature: An Invariant Descriptor for 3D Motion Trajectory Perception and Recognition 