Unlike other methods which tend to rely on ray-casting or similar processes, the method I'm using is FAST.
Hero characters can have hundreds of corrective morphs whereas NPC might only require a few key morphs for knees and elbows etc. You can generate as many as you require for your specific circumstances. Corrective morph generation is completely customisable. One of the main things the tool does is generate corrective morphs optimised for the linear skinning used in most game engines such as Unreal Engine and Unity.
