  This paper proposed a DWT based Steganographic technique. Cover image is
decomposed into four sub bands using DWT. Two secret images are embedded within
the HL and HH sub bands respectively. During embedding secret images are
dispersed within each band using a pseudo random sequence and a Session key.
Secret images are extracted using the session key and the size of the images.
In this approach the stego image generated is of acceptable level of
imperceptibility and distortion compared to the cover image and the overall
security is high.
