Emgu CV Library Documentation
Cmp Method
NamespacesEmgu.CVImage<(Of <(TColor, TDepth>)>)Cmp()()()

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Cmp(Image<(Of <(TColor, TDepth>)>), CMP_TYPE)
This function compare the current image with img2 and returns the comparison mask

Cmp(Double, CMP_TYPE)
This function compare the current image with value and returns the comparison mask

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.5.0.0 (1.5.0.0)