imaqEdgeTool4
Usage
EdgeReport2* imaqEdgeTool4(Image* image, ROI* roi, EdgeProcess processType, EdgeOptions2* edgeOptions, const unsigned int reverseDirection);
Purpose
Finds edges along an ROI in an image.
Image Types Supported
IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| image | Image* | The image in which to find the edges. |
| roi | ROI* | The ROI to find edges along. |
| processType | EdgeProcess | The edge process type. |
| edgeOptions | EdgeOptions2* | Specifies the parameters that are used to compute the edge profile and detect edges. |
| reverseDirection | const unsigned int | Set this parameter to TRUE to reverse the direction that roi is traversed to find edges. |
Return Value
| Type |
Description |
|---|---|
| EdgeReport2* | On success, this function returns a structure of information about the edges found. On failure, this function returns NULL. To get extended error information, call imaqGetLastError(). When you are finished with this structure, dispose of it by calling imaqDispose(). |
Parameter Discussion
edgeOptions—Set edgeOptions to NULL to use the following default values:
| polarity | IMAQ_SEARCH_FOR_ALL_EDGES |
| kernelSize | 3 |
| width | 3 |
| minThreshold | 10.0 |
| interpolationType | IMAQ_BILINEAR_FIXED |
| columnProcessingMode | IMAQ_MEDIAN_COLUMNS |