F_VN_ClaheExp
Apply Constrast Limited Adaptive Histogram Equalization. This applies local histogram equalization to individual tiles. (expert function)
Can use available TwinCAT Job Tasks for executing parallel code regions.
Syntax
Definition:
FUNCTION F_VN_ClaheExp : HRESULT
VAR_INPUT
ipSrcImage : ITcVnImage;
ipDestImage : Reference To ITcVnImage;
fClipLimit : LREAL;
nTilesX : UDINT;
nTilesY : UDINT;
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
ipSrcImage |
Source image (TCVN_ET_USINT or TCVN_ET_UINT, 1 channel) | |
|
ipDestImage |
Reference To ITcVnImage |
Returns the resulting image (An appropriate image will be created if required.) |
|
fClipLimit |
LREAL |
Threshold for contrast limit (set to <= 0 to disable clipping) |
|
nTilesX |
UDINT |
Number of tiles in x direction |
|
nTilesY |
UDINT |
Number of tiles in y direction |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
Return valueRequired 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 |