imaqFindLCDSegments
Usage
int imaqFindLCDSegments(ROI* roi, const Image* image, const LCDOptions* options);
Purpose
Takes a region of interest (ROI) with a single rectangular contour around an entire seven-segment LCD and updates the ROI to contain several rectangular contours, each around a single LCD digit. You can then process this modified ROI with the imaqReadLCD() function.
 |
Note All segments of the LCD must be on for this function to properly find the digits. |
Image Types Supported
IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| roi | ROI* | The region of interest to transform. When necessary, the function converts a rectangular contour contained in roi to a rotated rectangle contour. |
| image | const Image* | The image containing the LCD. All segments of the LCD must be lit. |
| options | const LCDOptions* | Controls how the function performs the search. |
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:
| litSegments | FALSE |
| threshold | 8 |
| sign | FALSE |
| decimalPoint | FALSE |