TIEVisionImage.getDiagonal

function getDiagonal(diag: int32_t): TIEVisionImage; safecall;

Create a new TIEVisionImage object that contains the specified diagonal.
No copy is performed, only the actual area is shared among the objects.

Parameter	Description
diag	Index of the diagonal, with the following values: d=0 is the main diagonal, d>0 is a diagonal from the lower half. For example, d=1 means the diagonal is set immediately below the main one. d<0 is a diagonal from the upper half. For example, d=-1 means the diagonal is set immediately above the main one