Gamma correction: seeing in the darkness!

Here is an example where we can see what is hidden in the background of a picture. The gamma correction in its basic form is: $u=f^{\gamma}$.

The following is an illustration where I used a picture I took in Washington DC, the picture of the World War II memorial, with a $\gamma=0.5$ I got the trees in the background.

Original picture of the world war II memorial

Gamma corrected image with $\gamma=0.5$