Typically one or more Capture Regions are placed in an object (usually a bone) and named “capture_region”. The object is then read into a Capture operation through the object’s hierarchy. The object is moved to deform the Capture operation’s geometry with a Deform operation.

The Capture Region volume is a tube with hemispheres at each end. By adjusting the shape of the capture region, you can affect how points are weighted by the Capture operation. The closer a point is to the edge of a region, the lighter the weight. Thus you can increase point weighting by increasing the size of the region.

The parameters in the Region tab define the values used for deforming the skin points while the values in the capture tab define the values used for capturing them. The shape of the capture region used for capturing can be viewed by setting Edit ▸ Objects ▸ Bone Kinematic Override: Capture Pose from the main menu.

Rig Adjustment parameters define a transform that nullifies deformations that may be caused by bone position tweaking during a rigging process. This happens after the geometry has been captured when bone joints need to be adjusted to improve animation. After capturing, moving a bone is going to deform the captured geometry. To reset this deformation, the capture region in a deforming (animating) pose needs to be aligned back with the capture region in a capturing pose. A transformation defined by the Rig Adjustment parameters aligns the deform and the capture incarnations of the capture region. This transformation is automatically calculated by the Align Capture Pose tool or when an hscript command “bonealigncapture” is invoked on bones. On a side note, the transform order of the rig adjustment is RTS and rotation order is ZYX.