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Table 1 Notational definitions for the four binary feature images used for quality evaluation of brain MRI images

From: Standardized quality metric system for structural brain magnetic resonance images in multi-center neuroimaging study

BINARY FEATURE IMAGE FEATURE ACRONYM FEATURE NOTATION THRESHOLD
First Grayscale Moment Grayscale FGMG \(J_{I_{d}}^{\mu _{d}}\) (Id>μd)
First Grayscale Moment Contrast FGMC \(J_{I_{c}}^{\mu _{d}}\) (Ic>μd)
First Contrast Moment Contrast FCMC \(J_{I_{c}}^{\mu _{c}}\) (Ic>μc)
First Contrast Moment Grayscale FCMG \(J_{I_{d}}^{\mu _{c}}\) (Id>μc)