Step 3 - Transforming to 3D

Once you have digitized/tracked all the camera view, click on on the toolbar or Tools->Transform 3D from the menu.

After the 3D transformation is completed, 3D trajectories and 3D residuals can be viewed in the output window. You can view X/Y/Z coordinates or residuals plotted over time by clicking the appropriate tab located at the bottom of the Graph.

The Legend table will also be filled in with the names from the camera view with the most points. This is normally the first camera window.

Legend

Figure 1, The legend

Examples of output graphs

X Position

Figure 2, X Position versus Time

Y Position

Figure 3, Y Position versus Time

Z Position

Figure 4, Z Position versus Time

You can check the validity of transformed data from the residual graph.

Residuals

Figure 5, Residual versus Time

If the obtained trajectory is not continuous, please check the following:

•	The the entire measurement volume was covered by the wand movement. If a point is outside the calibrated volume, MaxTRAQ 3D will not generate a valid 3D point.

•	That the marker/point has been seen/digitized by at least 2 cameras.

•	The residual are not above the specified Maximum Residual

Once the transformation is performed, 3D data can be either saved as MaxTRAQ C3D file (c3d) or as an ASCII file (mqa) for further analysis.