Although this function is written as "Transfer", it is actually a "constraint" to a bone with a specific name in the armature to control the movement. It just adds a function to do so and refers to the empty data generated at the end of the previous time (after pressing [Start Detection]).
Now let's see how it works.
Since the "rig" object should be selected, first change the [3D Viewport] to [Pose Mode] from the upper left of the screen, and click the "circle" (see below) to select it. increase. After that, click on the “Pulley and Bone” icon (see below) in the Property Editor to switch to “Bone Constraint Properties”.
After changing to [Pose Mode], click the "circle" at the tip of your finger to select it, then click the icon in the box to switch to [Bone Constraint Property]Then, as shown above, [Copy Rotation] You can see that "Constraint" is set.
And what is set in the property called "target" is "empty" that I talked about last time. The rotation animation is copied to the bone with this constraint.
Flow of captured dataBy the way, if you capture again with the [Start Detection] button after this, you can animate this armature almost in real time by analyzing the data from the webcam.