1. A computer system, comprising: a processor; a tool executing on the processor that facilitates the adjustment of parameters of a gesture filter of an application that is designed to recognize whether a user of the application has performed a particular gesture from data comprising information about position or movement of the user, the tool operating to: receive data captured by a capture device, the data comprising information representing user position or movement; display a visual representation of the position or movement represented by the received data; display a representation of an output of the gesture filter in response to the received data; receive, via a user interface of the display, a change to a parameter of the gesture filter of the application; and alter the gesture filter according to the received change.