It is very difficult to extract a secret message from image
due to the numerous methods of hiding in images. In this
paper , we apply VPD method on deferent types of secret
images to extract the hidden information. Some of these
types need stego-image and stego-key, others need stegoimage
only, and the paper has extracted the secret data
that has been hidden by deferent tools. The final conclusion
is very difficult to apply one general method for
extraction because there are different techniques such as
encryption (block and stream), colors and filters could be
used for embedding and each one needs special way to
solve it (find the hidden information). In feature works,
we will also try to select features using the localized
generalization error model to reduce the system complexity.