Erratum for "Single Pixel Imaging via Compressive Sampling"

In page 91, paragraph 5 of the appendix, where the paper reads

"...and so each measurement follows a Poisson distribution with mean and 
variance (PT/2) for BS and (PTM/2N) for CS."

it should read

"...and so each measurement follows a Poisson distribution with mean and 
variance (PT/2) for BS and (PTN/2M) for CS."