Correction to: Multimed Tools Appl

https://doi.org/10.1007/s11042-017-5213-9

Equations 9 and 10 in the original publication of this article contained an error. The correct equations are presented in this correction article.

$$ {\displaystyle \begin{array}{c}\kern-8.5em For\ W\ \left({k}_1,{k}_2\right)=0,\\ {}\left\{\begin{array}{c}H{H}^{\prime}\left(m,n\right)=\frac{HH\left(m,n\right)+ HH\left(p,q\right)}{2}-\frac{T}{2}\\ {}H{H}^{\prime}\left(p,q\right)=\frac{HH\left(m,n\right)+ HH\left(p,q\right)}{2}+\frac{T}{2}\end{array}\right.\end{array}} $$
(9)
$$ {\displaystyle \begin{array}{c}\kern-8.5em For\ W\ \left({k}_1,{k}_2\right)=1,\\ {}\left\{\begin{array}{c}H{H}^{\prime}\left(m,n\right)=\frac{HH\left(m,n\right)+ HH\left(p,q\right)}{2}+\frac{T}{2}\\ {}H{H}^{\prime}\left(p,q\right)=\frac{HH\left(m,n\right)+ HH\left(p,q\right)}{2}-\frac{T}{2}\end{array}\right.\end{array}} $$
(10)