IMAQ Quantify VI

LabView NI Vision

IMAQ Quantify VI

Owning Palette: AnalysisInstalled With: NI Vision Development Module

Quantifies the contents of an image or the regions within an image. The region definition is performed with a labeled image mask. Each region of the mask has a single unique value.

IMAQ Quantify

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Image is a reference to the source image.

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Image Mask is a labeled version of the source image that specifies the regions to quantify. This image must be an 8-bit image or 16-bit image. Only the pixels in the original image that correspond to an equivalent pixel in the mask different from 0 are used for the quantification. Each pixel in this image (mask) indicates, by its value, which region belongs to the corresponding pixel in Image. Up to 255 different regions for an 8-bit image, or 65,535 regions for a 16-bit image, can be quantified directly from the Image. A quantification is performed on the complete image if the Image Mask is not connected.

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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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Global Report is a cluster containing the quantification data relative to all the regions within an image, or to the entire image if the Image Mask is not connected. This cluster contains the following elements:

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Mean Value of the pixels.

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Standard Variation of the pixel values indicates the distribution of the values in relation to the average. The higher this value, the better the distribution of the pixel values.

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Minimal Value returns the smallest pixel value.

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Maximal Value returns the largest pixel value.

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Area (calibrated) returns the analyzed surface area in user-defined units.

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Area (pixels) returns the analyzed surface area in pixels.

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% returns the percentage of the analyzed surface in relation to the complete image.

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Region Reports is a cluster containing the quantification data relative to each region within an image, or the entire image if the Image Mask is not connected. The nth element in this array contains the data regarding the nth region. The size of this array is equal to the largest pixel value in Image Mask. The returned data is identical to the data in Global Report.

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Mean Value of the pixels.

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Standard Variation of the pixel values indicates the distribution of the values in relation to the average. The higher this value, the better the distribution of the pixel values.

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Minimal Value returns the smallest pixel value.

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Maximal Value returns the largest pixel value.

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Area (calibrated) returns the analyzed surface area in user-defined units.

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Area (pixels) returns the analyzed surface area in pixels.

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% returns the percentage of the analyzed surface in relation to the complete image.

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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.