Cv2Flip Method

public static void Flip(
	InputArray src,
	OutputArray dst,
	FlipMode flipCode
)

Public Shared Sub Flip ( 
	src As InputArray,
	dst As OutputArray,
	flipCode As FlipMode
)

public:
static void Flip(
	InputArray^ src, 
	OutputArray^ dst, 
	FlipMode flipCode
)

static member Flip : 
        src : InputArray * 
        dst : OutputArray * 
        flipCode : FlipMode -> unit 

Parameters

src

Type: OpenCvSharpInputArray
The source array

dst

Type: OpenCvSharpOutputArray
The destination array; will have the same size and same type as src

flipCode

Type: OpenCvSharpFlipMode
Specifies how to flip the array: 0 means flipping around the x-axis, positive (e.g., 1) means flipping around y-axis, and negative (e.g., -1) means flipping around both axes. See also the discussion below for the formulas.

Reference