F_VN_InverseDft

F_VN_InverseDft 1:

Compute the inverse DFT for a given frequency image.

Syntax

Definition:

FUNCTION F_VN_InverseDft : HRESULT
VAR_INPUT
    ipFrequencyImage : ITcVnImage;
    ipSpatialImage   : Reference To ITcVnImage;
    bRealOutput      : BOOL;
    hrPrev           : HRESULT;
END_VAR

F_VN_InverseDft 2: Inputs

Name

Type

Description

ipFrequencyImage

ITcVnImage

Source frequency image (elements of type REAL or LREAL, 1 (packed CCS) or 2 (Re + Im) channels)

ipSpatialImage

Reference To ITcVnImage

Destination image (Same type as ipFrequencyImage, but number of channels can vary depending on bRealOutput. An appropriate image will be created if required.)

bRealOutput

BOOL

Only relevant if ipFrequencyImage has 2 channels. If true, the result image will have only 1 channel. Otherwise, the result image will have 2 separate channels (Re + Im). If ipFrequencyImage has only 1 channel, packed CCS format is assumed and the result image will always have only 1 channel.

hrPrev

HRESULT

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

F_VN_InverseDft 3: Return value

HRESULT

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