IMAQ ROIProfile VI
Owning Palette: AnalysisInstalled With: NI Vision Development ModuleCalculates the profile of the pixels along the boundary of an ROI descriptor. This VI returns a data type (cluster) that is compatible with a LabVIEW graph. This VI also returns other information such as pixel statistics and the coordinates of the pixels along the ROI boundary.
Image is a reference to the source image. |
|||||||||||
ROI Descriptor is a descriptor that defines the region of interest.
|
|||||||||||
error in (no error) describes the error status before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
|
|||||||||||
ROI Graph is a cluster that contains the ROI profile with an x-origin at 0 and an increment of 1. The cluster contains the following elements:
|
|||||||||||
Pixel Coordinates is an array containing the spatial coordinates of each pixel along the ROI boundary. |
|||||||||||
ROI Pixel Statistics is a cluster containing relevant information about the pixels found along the ROI boundary. The cluster contains the following elements:
|
|||||||||||
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
|
|||||||||||
Global Rectangle is a cluster that contains the coordinates of a bounding rectangle for the ROI in the image. This cluster includes the following parameters:
|
Examples
Refer to the following for examples that use this VI.
- LabVIEW\examples\Vision\2. Functions\Caliper\Edge Detection Example.llb
- LabVIEW\examples\Vision\3. Applications\Mechanical Assembly Example.vi