Sprite.Create() with outline tolerance?

I'm creating sprites at runtime from image data, and need a way to call Sprite.Create() with *high Outline Tolerance*, in order to get a tight, accurate mesh. By default, Sprites are created with low outline tolerance, resulting in inaccurate meshes like this-- ![alt text][1] The same image with high outline tolerance has a much tighter mesh ![alt text][2] While the Unity Sprite Editor allows for the adjustment of a sprite's outline, there appears to be no runtime facility for this. Does anyone know of one? Thank you! [1]: http://bit.ly/2ChhrrJ [2]: http://bit.ly/2ChmAjQ