intensityintensityIntensityIntensityintensity (Operator)

Name

intensityintensityIntensityIntensityintensity — Calculate the mean and deviation of gray values.

Signature

Description

The operator intensityintensityIntensityIntensityIntensityintensity calculates the mean and the deviation of the gray values in the input image within RegionsRegionsRegionsRegionsregionsregions. If R is a region, p a pixel from R with the gray value g(p) and F the plane (F = |R|), the features are defined by:

Attention

Note that the operator intensityintensityIntensityIntensityIntensityintensity only considers the given RegionsRegionsRegionsRegionsregionsregions and ignores any previously set domain of the input image ImageImageImageImageimageimage. The calculation of DeviationDeviationDeviationDeviationdeviationdeviation does not follow the usual definition if the region of the image contains only one pixel. In this case 0.0 is returned.

Execution Information

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Automatically parallelized on tuple level.

Parameters

Complexity

If F is the area of the region, the runtime complexity is O(F).

Result

The operator intensityintensityIntensityIntensityIntensityintensity returns the value 2 (H_MSG_TRUE). The behavior in case of empty input (no input images available) is set via the operator set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>), the behavior in case of empty region is set via set_system(::'empty_region_result',<Result>:)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)set_system("empty_region_result",<Result>). If necessary an exception is raised.

Possible Successors

thresholdthresholdThresholdThresholdThresholdthreshold

Alternatives

select_grayselect_graySelectGraySelectGraySelectGrayselect_gray, min_max_graymin_max_grayMinMaxGrayMinMaxGrayMinMaxGraymin_max_gray

See also

mean_imagemean_imageMeanImageMeanImageMeanImagemean_image, gray_histogray_histoGrayHistoGrayHistoGrayHistogray_histo, gray_histo_absgray_histo_absGrayHistoAbsGrayHistoAbsGrayHistoAbsgray_histo_abs

Module

Foundation