imaqConstructROI2
Usage
int imaqConstructROI2(const Image* image, ROI* roi, Tool initialTool, const ToolWindowOptions* tools, const ConstructROIOptions2* options, int* okay);
Purpose
Displays the image in a modal window and allows the user to draw a region of interest (ROI) on it. After the user draws the ROI, the function closes the window.
Image Types Supported
IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_COMPLEX, IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| image | const Image* | Specifies the image that the user selects an ROI from. |
| roi | ROI* | Specifies the ROI that initially appears in the ROI constructor window. The user can then modify this ROI by adding, removing, resizing, and moving contours. The function applies the results of these modifications to the ROI. |
| initialTool | Tool | Specifies the initially selected tool in the ROI constructor window. This tool must be available in the ROI constructor window. |
| tools | const ToolWindowOptions* | Determines the availability of tools in the ROI constructor window. Set tools to NULL to display all the tools. |
| options | const ConstructROIOptions2* | Describes how a function presents the ROI constructor window. |
| okay | int* | Upon return, this parameter is TRUE if the user pressed OK to end the selection of a line. Otherwise, this parameter is FALSE. Set this parameter to NULL if you do not need this information. |
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:
| windowNumber | IMAQ_MODAL_DIALOG |
| windowTitle | "ROI Constructor" |
| type | IMAQ_PALETTE_GRAY |
| palette | NULL |
| numColors | 0 |
| maxContours | 1 |