WarpPerspective (Rectangle)

Use a perspective transform to warp a rectangle.

Syntax

Definition:

HRESULT WarpPerspective(
    HRESULT              hrPrev,
    ULONG                nTopLeftX,
    ULONG                nTopLeftY,
    ULONG                nBottomRightX,
    ULONG                nBottomRightY,
    ITcVnContainer*&     ipDestPoints,
    TcVnMatrix3x3_LREAL& aTransformationMatrix
)

Parameters

Name

Type

Description

hrPrev

HRESULT

HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

nTopLeftX

ULONG

x coordinate of the top left corner

nTopLeftY

ULONG

y coordinate of the top left corner

nBottomRightX

ULONG

x coordinate of the bottom right corner

nBottomRightY

ULONG

y coordinate of the bottom right corner

ipDestPoints

ITcVnContainer*&

Returns the 4 transformed points (ContainerType_Vector_TcVnPoint2_REAL)

aTransformationMatrix

TcVnMatrix3x3_LREAL&

Perspective transformation matrix

WarpPerspective (Rectangle) 1: Return value

HRESULT

Required License

TC3 Vision Base

System Requirements