ABSTRACT
Good preproduction, especially a well-thought-out shot list, and the best calibration possible help to generate good data. That reduces the need for data cleaning and editing. This chapter focuses on cleaning and editing marker data, and on applying marker data to the skeleton. The cleanliness of optical marker data is heavily dependent on the cameras being calibrated well and all the markers being inside of the calibrated volume. There are two major types of possible data cleaning. One is cleaning marker data that is translational data for optical systems and translational and rotational data for magnetic systems. The other is cleaning skeletal data that is largely rotational data with a small amount of translational data. The type of spline most commonly implemented for a graphical data editing tool is a cubic spline defined by the positions and tangents of two end points.
