F_VN_WarpPerspectiveExp
Apply a perspective transformation to an image. (expert function)
Can use available TwinCAT Job Tasks for executing parallel code regions.
Can return partial results when canceled by Watchdog.
Syntax
Definition:
FUNCTION F_VN_WarpPerspectiveExp : HRESULT
VAR_INPUT
ipSrcImage : ITcVnImage;
ipDestImage : Reference To ITcVnImage;
END_VAR
VAR_IN_OUT
aTransformationMatrix : TcVnMatrix3x3_LREAL;
END_VAR
VAR_INPUT
nDestWidth : UDINT;
nDestHeight : UDINT;
eInterpolationType : ETcVnInterpolationType;
bWarpInverse : BOOL;
eBorderInterpolation : ETcVnBorderInterpolationMethod;
fBorderValue : LREAL;
hrPrev : HRESULT;
END_VAR
Inputs
Name |
Type |
Description |
---|---|---|
ipSrcImage |
Source image | |
ipDestImage |
Reference To ITcVnImage |
Destination image (An appropriate image will be created if required.) |
nDestWidth |
UDINT |
Width of the destination image |
nDestHeight |
UDINT |
Height of the destination image |
eInterpolationType |
Interpolation method | |
bWarpInverse |
BOOL |
Handle aTransformationMatrix as the inverse transformation |
eBorderInterpolation |
Border interpolation method (ISOLATED not supported) | |
fBorderValue |
LREAL |
Border value, if CONSTANT is used |
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
In/Outputs
Name |
Type |
Description |
---|---|---|
aTransformationMatrix |
Perspective transformation matrix |
Required License
TC3 Vision Base
System Requirements
Development environment | Target platform | PLC libraries to include |
---|---|---|
TwinCAT V3.1.4024.54 or later | PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU | Tc3_Vision |