contextual loss for Single image super resolution

[sureJ0824]

hello, I am working on SISR recently and I am trying to combine different loss function together, such as L1 loss, perceptural loss and contextual loss， I wanna know what is the value of contextual loss, just the magnitude. because ,what I calculate is that the contextual loss is very very small，I donot know wheather it works
Hope your resopnse, thank you so much