There is an arbitrary multiplier on the brightness, a global scaling that must be tuned when transferring a lighting condition. It is fundamental to the problem of relighting. Finding this global scaling isn't done on prediction phase, so it must be done when either testing PSNR or displaying...
In this tutorial, we discuss the history of image dehazing, show how to set an image dehazing task up in a notebook, and then examine 7 different techniques …
and “M” is the maximum possible value of a pixel in an image (for 8-bit RGB images, we are used to M=255). The higher the value of PSNR (in decibels/dB), the better the reconstruction quality. InPython3PSNR can be coded like the following: ...