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

First Grayscale Moment Grayscale

FGMG

\(J_{I_{d}}^{\mu _{d}}\)

First Grayscale Moment Contrast

FGMC

\(J_{I_{c}}^{\mu _{d}}\)

First Contrast Moment Contrast

FCMC

\(J_{I_{c}}^{\mu _{c}}\)

First Contrast Moment Grayscale

FCMG

\(J_{I_{d}}^{\mu _{c}}\)