imaqRake
Usage
RakeReport* imaqRake(const Image* image, const ROI* roi, RakeDirection direction, EdgeProcess process, const RakeOptions* options);
Purpose
Finds edges along a set of parallel lines defined inside a rectangular region.
 |
Note This function is obsolete. The replacement function is imaqRake2(). |
Image Types Supported
IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| image | const Image* | The image in which to find edges. |
| roi | const ROI* | The rectangular region the function looks in for the edges. The first contour of roi must be a rectangle or a rotated rectangle. |
| direction | RakeDirection | The direction the function searches for edges along the search lines. |
| process | EdgeProcess | Defines the edges for which the function looks. |
| options | const RakeOptions* | Describes how to search for the edges. |
Return Value
| Type |
Description |
|---|---|
| RakeReport* | On success, this function returns information describing the calculated edges and the rake used by the function. On failure, this function returns NULL. To get extended error information, call imaqGetLastError(). When you are finished with the information, dispose of it by calling imaqDispose(). |
Parameter Discussion
options—Set options to NULL to use the default options, as follows:
| threshold | 40 |
| width | 4 |
| steepness | 2 |
| subsamplingRatio | 5 |
| subpixelType | IMAQ_QUADRATIC |
| subpixelDivisions | 1 |