imaqAbsoluteDifference
Usage
int imaqAbsoluteDifference(Image* dest, const Image* sourceA, const Image* sourceB);
Purpose
Subtracts one image from another and returns the absolute value of the difference.
Image Types Supported
IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_RGB
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| dest | Image* | The destination image. |
| sourceA | const Image* | The first image to subtract. |
| sourceB | const Image* | The second image to subtract. |
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
The type of the sourceB image depends on the type of the sourceA, as follows:
- If sourceA is IMAQ_IMAGE_U8, sourceB must be IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, or IMAQ_IMAGE_RGB.
- If sourceA is IMAQ_IMAGE_I16 or IMAQ_IMAGE_SGL, sourceB must be IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, or IMAQ_IMAGE_SGL.
- If sourceA is IMAQ_IMAGE_RGB, sourceB must be IMAQ_IMAGE_RGB or IMAQ_IMAGE_U8.