-For whole experiments, a set of 500 images is randomly extracted
-from the database taken from the BOSS contest~\cite{Boss10}.
+For whole experiments, the whole set of 10000 images
+of the BOSS contest~\cite{Boss10} database is taken.
In this set, each cover is a $512\times 512$
-grayscale digital image.
+grayscale digital image in a RAW format.
+We restrict experiments to
+this set of cover images since this paper is more focussed on
+the methodology than benchmarking.
\subsection{Adaptive Embedding Rate}
The visual quality of the STABYLO scheme is evaluated in this section.
For the sake of completeness, four metrics are computed in these experiments:
the Peak Signal to Noise Ratio (PSNR),
-the PSNR-HVS-M family~\cite{PSECAL07,psnrhvsm11},
-the BIQI~\cite{MB10,biqi11}, and
+the PSNR-HVS-M family~\cite{psnrhvsm11},
+the BIQI~\cite{MB10}, and
the weighted PSNR (wPSNR)~\cite{DBLP:conf/ih/PereiraVMMP01}.
The first one is widely used but does not take into
account the Human Visual System (HVS).
