First order (intensity) features

These features are computed according to the definitions in IBSI section 4.3. The intensity-based statistical features describe how the intensity within the region of interest (ROI) is distributed. The features in this set do not require discretisation. Intensity-based statistical featuresare not meaningful if the intensity scale is arbitrary. Hence, normalization of intensities to a standard unit is required for modalities such as MR.

Following first order features are supported:

• min:
• max:
• mean:
• range:
• std:
• var:
• median:
• skewness:
• kurtosis:
• rms:
• totalEnergy:
• meanAbsDev:
• medianAbsDev:
• P10:
• P90:
• robustMeanAbsDev:
• robustMedianAbsDev:
• interQuartileRange:
• coeffDispersion:
• coeffVariation:

Example function call:

featureS.firstOrderS = radiomics_first_order_stats(scan3M(mask3M));