[This is preliminary documentation and is subject to change.]
-1, 0 or +1. sign of the laplacian at the point.
can be used to speedup feature comparison
(normally features with laplacians of different signs can not match)
Namespace:
Emgu.CV.StructureAssembly: Emgu.CV (in Emgu.CV.dll) Version: 2.0.0.0 (2.0.0.0)