30. The method as recited in claim 1 , further comprising performing in-plane estimation to detect an orientation of a face image data wherein the face image data is part of the set of digital image data.
30. The method as recited in claim 1 , further comprising performing in-plane estimation to detect an orientation of a face image data wherein the face image data is part of the set of digital image data. 32. The method as recited in claim 30 , further comprising performing up-right face detection based on the in-plane estimation.