IMAQ Unwrap VI

LabView NI Vision

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IMAQ Unwrap VI

Owning Palette: Image ManipulationInstalled With: NI Vision Development Module

Unwraps a circular strip from an image into a rectangular strip.

Examples

IMAQ Unwrap

Orientation specifies the orientation of the image data within the circular strip.

Baseline inside (0)	(Default) Specifies that the base of the image data is located along the inside edge of the circular strip.
Baseline outside (1)	Specifies that the base of the image data is located along the outside edge of the circular strip.

Image Src is a reference to the source image.

Image Dst is a reference to the destination image.

Annulus is a cluster of parameters that define a circular strip.

	Center X specifies the x-coordinate of the center of the circle or annulus.
	Center Y specifies the y-coordinate of the center of the circle or annulus.
	Inner Radius is the radius (in pixels) of the inner circle defining one edge of the circular strip.
	Outer Radius is the radius (in pixels) of the outer circle defining the second edge of the circular strip.
	Start Angle is the first angle of the circular strip. The angle is measured counterclockwise from the x-axis of a coordinate system centered on the center of the circle or annulus.
	End Angle is the second angle of the circular strip. The angle is measured counterclockwise from the x-axis of a coordinate system centered on the center of the circle or annulus.

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.

	status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
	code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
	source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

Interpolation Type specifies the interpolation method used in the unwrapping process. The following options are valid:

Zero Order (0)	Rounds to the nearest integral pixel location
Bi-Linear (1)	Uses linear interpolation in both the x- and y-directions to compute the pixel location
Quadratic (2)	Uses the quadratic formula to compute the pixel location
Cubic Spline (3)	Uses cubic splines to compute the pixel location

Image Dst Out is a reference to the destination image. If Image Dst is connected, Image Dst Out is the same as Image Dst. Otherwise, Image Dst Out refers to the image referenced by Image Src.

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.

	status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
	code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
	source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

Examples

Refer to the following for an example that uses this VI.

LabVIEW\examples\Vision\2. Functions\Image Management\Unwrap Barcode Example.vi

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