Name
intensityintensityIntensityintensityIntensityIntensity — Calculate the mean and deviation of gray values.
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:
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.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on tuple level.
Regions in which the features are calculated.
Mean gray value of a region.
Deviation of gray values within a region.
If F is the area of the region, the runtime complexity is
O(F).
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>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("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>)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>).
If necessary an exception is raised.
thresholdthresholdThresholdthresholdThresholdThreshold
select_grayselect_graySelectGrayselect_graySelectGraySelectGray,
min_max_graymin_max_grayMinMaxGraymin_max_grayMinMaxGrayMinMaxGray
mean_imagemean_imageMeanImagemean_imageMeanImageMeanImage,
mean_imagemean_imageMeanImagemean_imageMeanImageMeanImage,
gray_histogray_histoGrayHistogray_histoGrayHistoGrayHisto,
gray_histo_absgray_histo_absGrayHistoAbsgray_histo_absGrayHistoAbsGrayHistoAbs
Foundation