To evaluate the effectiveness of the proposed method, we
apply the proposed method “VPD” on deferent three
types of secret images, hiding a color secret image, hiding
a palette-based 256-color secret image, and hiding a
grayscale image in a true color image the VPD Method
will detect the stego objects from the different image that
contain the stego objects as shown in Figures 3 and 4 in
the first both types but it fail in the third type.