Cryptography Reference
In-Depth Information
(A) Image-1-bef (950713, BMP)
(B) Image-2-bef (600465, BMP)
Fig. 8.19.
Vessel images.
Table 8.4.
Folders for embedding.
Folder name Original folder size (KB) Compressed folder size (KB)
Folder-1
1,710
1,035
Folder-2
980
417
(A) Folder-1 (1,710KB)
(B) Folder-1 (980KB)
Fig. 8.20.
Folder structures to be embedded.
Embedding
We used the default complexity value 40. We did not use any Access Key in
this experiment. The embedding operation starts by compressing the embed-
ding data (actually, folders) in the embedding program. In each embedding,
an image input in BMP was output in BMP, and in PNG then in PNG.
Table 8.5 shows the properties of the two stego images after embedding. As
we see in the table, the data sizes were unchanged after embedding in BMP,
but increased a little in PNG. The reason why PNG embedding increases the
