imaqCannyEdgeFilter
Usage
int imaqCannyEdgeFilter(Image* dest, const Image* source, const CannyOptions* options);
Purpose
Outlines edges in an image using the Canny algorithm, which is useful for images with poor signal-to-noise ratios.
Image Types Supported
IMAQ_IMAGE_U8
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| dest | Image* | The destination image. |
| source | const Image* | The image whose edges the function outlines. |
| options | const CannyOptions* | A description of filter parameters to use in the algorithm. |
Return Value
| Type |
Description |
|---|---|
| int | On success, this function returns a non-zero value. On failure, this function returns 0. To get extended error information, call imaqGetLastError(). |
Parameter Discussion
options—Set options to NULL to use the default options, as follows:
| sigma | 1.00 |
| upperThreshold | 0.70 |
| lowerThreshold | 0.20 |
| windowSize | 9 |