Smooth bind problem with influence

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  09 September 2012
Smooth bind problem with influence

Hey guys,

I'm pretty new to character animation, and this problem I ran into when binding my skeleton to the skin has been bugging me all day. I've tried everything, looked in every forum and couldn't find a solution to my problem.

I used a smooth bind in Maya 2012 to bind my skeleton to the skin. Now when I rotate my elbow joint, parts of the geometry of the belly deform as well as you can see in the screenshot. I've tried changing the Max influence, the dropoff rate, changed the bind method from closest in hierarchy to closest in distance... Nothing seemed to get the influence of the elbow joint away from the belly geometry.

The next thing I did was try my luck painting the skin with the paint skin weight tool. But when I went over the belly parts with a black brush, all the verteces of a white face moved to the origin. This happened when I used a maxinfluence of 1 and a 0.4 dropoff rate

Another time however, when I had a high influence rate (14) and a drop off rate of 4, I was able to paint all the white belly parts black without them moving to the origin. However, when I rotated my elbow joint, the belly part was still partly deforming, which to me tells me, that the elbow joint still has an influence on the belly geometry.

I've also tried the same things with a rigid bind, with very similar results. Does anyone know how to fix this, or has an idea why the belly part is being influenced by the elbow joint in the first place?
  09 September 2012
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