| Article ID: | iaor1997685 |
| Country: | United Kingdom |
| Volume: | 28 |
| Issue: | 2 |
| Start Page Number: | 394 |
| End Page Number: | 404 |
| Publication Date: | Jun 1996 |
| Journal: | Advances in Applied Probability |
| Authors: | Rataj Jan |
Methods of estimation of the oriented direction distribution (i.e. the distribution of unit outer normals over the boundary) of a planar set from the convex ring are proposed. The methods are based on an estimation of the area dilation of the investigated set by chosen test sets.