IMAQ Extract Tetragon VI
- Updated2023-02-21
- 8 minute(s) read
Requires: NI Vision Development Module
Extracts a tetragon from the source image. The tetragon can be wired to a ROI or an array points. The array must contain four points, starting with the point that will be extracted into the upper left corner of the destination and proceeding clockwise.
IMAQ Extract Tetragon (Point Array)
Extracts a tetragon from the source image.

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Options is a cluster containing information about the destination image.
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Image Src is a reference to the source image. |
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Image Dst is a reference to the destination image. |
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Tetragon is an array of four points that define the boundary of the tetragon in the image.
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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.
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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. |
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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.
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IMAQ Extract Tetragon (ROI)
Extracts a tetragon from the source image.

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Options is a cluster containing information about the destination image.
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Image Src is a reference to the source image. |
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Image Dst is a reference to the destination image. |
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ROI Descriptor is a descriptor that defines the rectangle, rotated rectangle, or other four-side rectangular polygon within which the edge detection is performed.
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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.
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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. |
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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.
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