A Blind Watermarking Scheme Using Bitplane of DC Component for JPEG Compressed Images

In this paper a watermarking technique has been
proposed. The proposed watermarking technique has been
incorporated in the JPEG compression standard. Unlike
conventional watermarking techniques which are generally based
on manipulation of the AC component in DCT domain, the
proposed approach utilizes the DC component that is
perceptually significant part, to embed the watermark. The
watermark embedding is done using a bitplane approach. The
proposed scheme does not require original image for the
extraction of watermark thus making it a blind watermarking
scheme. The results have shown that the proposed watermarking
technique is imperceptible and secure. The proposed scheme is
also compared with the QIM based watermarking scheme [10],
and it is shown that the proposed scheme is simple in
implementation and suitable for the authentication and tamper
detection. Moreover, a detailed study has been done to choose the
suitable DC component bitplane to embed the watermark.