MatchTemplate
Match a template image with every location in the source image and save the comparison results.
Can use available TwinCAT Job Tasks for executing parallel code regions.
Can return partial results when canceled by Watchdog.
Syntax
Definition:
HRESULT MatchTemplate(
HRESULT hrPrev,
ITcVnImage* ipSrcImage,
ITcVnImage* ipTemplateImage,
ITcVnImage*& ipResultImage,
ETcVnTemplateMatchMethod eMatchMethod = TMM_CCORR_NORMED,
ITcVnImage* ipTemplateMask = nullptr
)Parameters
|
Name |
Type |
Default |
Description |
|---|---|---|---|
|
hrPrev |
|
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) | |
|
ipSrcImage |
|
Source image (USINT or REAL, 1 or 3 channels) | |
|
ipTemplateImage |
|
Template image (same type as ipSrcImage, smaller width and height) | |
|
ipResultImage |
|
Returns the result image (REAL, 1 channel, dimensions: (ipSrcImage.width - ipTemplateImage.width + 1) x (ipSrcImage.height - ipTemplateImage.height + 1). The best match is the global minimum (SQDIFF(_NORMED)) or maximum (CCORR(_NORMED), CCOEFF(_NORMED)). The position in ipResultImage is the top-left corner of ipTemplateImage position in ipSrcImage) | |
|
eMatchMethod |
TMM_CCORR_NORMED |
Specifies the template match method | |
|
ipTemplateMask |
nullptr |
Optional mask for ipTemplateImage (same type and size as ipTemplateImage) |
Return valueRequired License
TC3 Vision Matching
System Requirements
Development environment | Target platform | PLC libraries to include |
|---|---|---|
TwinCAT V3.1.4024.59 or later | PC or CX (x64) with min. PL50, e.g. Intel 4-core Atom CPU | Tc3_Vision |