Synopsis

It generally makes no sense to have mesh triangles much smaller than the pixels in the original image, since the original image contained no structural information on such a small length scale. Furthemore, if the triangles become smaller than the pixels, the mesh will adapt to follow the jagged pixel boundaries, which are not representative of physical structure. Therefore, it is wise to make sure that very small mesh triangles are never created.

No triangle with an area less than min_area will be refined, unless the refinement is required by the refinement of a neighboring triangle. In that case, the triangle will be divided through the side it shares with the neighbor, despite the setting of /adaptive_mesh/refine/division. The area is expressed in units of the pixel area.

Default: 0.5