IMAQ GetPixelValue VI

LabView NI Vision

IMAQ GetPixelValue VI

Owning Palette: Pixel ManipulationInstalled With: NI Vision Development Module

Reads a pixel value from an image.

IMAQ GetPixelValue

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Image is a reference to the source image.

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X Coordinate is the horizontal coordinate of the pixel.

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Y Coordinate is the vertical coordinate of the pixel.

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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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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.

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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.

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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.

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Pixel Value (U16) returns the specified pixel value. This output is used only for an 8-bit or unsigned 16-bit image.

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Pixel Value (U8) returns the specified pixel value. This output is used only for an 8-bit image.

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Pixel Value (I16) returns the specified pixel value. This output is used only for an 8-bit or signed 16-bit image.

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Pixel Value (Float) returns the specified pixel value. The float format can accept values from all supported image types (8-bit, 16-bit, or 32-bit floating point).

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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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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.

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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.

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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.