interaction design - UI gestures for Kinect, Kinect-type devices

On touch screen devices, there appears to have evolved a standard set of gestures, e.g.

• pinch and spread with two fingers for zoom in and zoom out


• swipe with one finger to scroll a document

We're developing a (we'd like to think) minority-report style user interface using the kinect.

What UI gestures could possibly be used be used for a kinect-like device?

For example, to accomplish a click, we have considered the following:

• elbow joint flexion angle delta: extension=>mouseDown flexion=>mouseUp


• distance of hand from camera: closer=>mouseDown further=>mouseUp


• hand size: handInFist=>mouseDown handOpen=>mouseUp

Completely brand new/ off-the-beaten-track/ innovative suggestions are welcome!!