G	Grid cells
d	Size of a bounding box
(${\mathrm{a}}_{\mathrm{k}}$,${\mathrm{b}}_{\mathrm{k}}$), (${\widehat{\mathrm{a}}}_{\mathrm{k}}$,${\widehat{\mathrm{b}}}_{\mathrm{k}}$)	Center points of predicted and ground truth bounding box respectively
(${\sqrt{\mathrm{w}}}_{\mathrm{k}}$,${\sqrt{\mathrm{h}}}_{\mathrm{k}}$),(${\widehat{\sqrt{\mathrm{w}}}}_{\mathrm{k}}$,${\widehat{\sqrt{\mathrm{h}}}}_{\mathrm{k}}$)	Width, height
W	Weight
$\mathrm{p}$	Probability
C	Conditional class
(${\mathrm{s}}_{\mathrm{k}}$,${\widehat{\mathrm{s}}}_{\mathrm{k}}$)	The confidence score of predicted and ground truth bounding box
${\mathsf{\xi }}_{\left(\mathrm{P},\mathrm{R}\right)}\left(\mathrm{i}\right)$	LBP feature vector
${\mathsf{\xi }}_{\mathrm{fv}}$(i)	Fused feature vector
${\mathsf{\xi }}_{\mathrm{av}}$(i)	Feature vector of Alexnet
${\mathsf{\xi }}_{\mathrm{dv}}$(i)	The feature vector of Darknet-53
s	The operator that retains sign of differences
${\mathrm{X}}_{\mathrm{c}}$	Center pixel value
${\mathrm{X}}_{\mathrm{k}}$	Intensity values
P	Neighboring pixels