IMPLEMENTATION OF DWM FOR MEDICAL IMAGES USING IWT AND QR CODE AS A WATERMARK

As we know that, securing the medical images is a very challenging task. This challenge is efficiently handled with the help digital watermarking techniques. With the help of this growing technology we are able to evaluate validation, reliability, privacy and integrity of the medical images. Many algorithms have been implemented on this technology. The DWM may be implemented using various techniques like DCT, DWT, combination of DCT and DWT, combination of DWT and SVD. Nowadays the work is extended using integer wavelet transform (IWT) also [5]. But in all these works, one of the major challenges is data embedding capacity. The more number of bits hidden distorts the image which is strictly avoided in the case of medical and military applications. To overcome this problem nowadays work is going on to implement digital watermarking technique with less data embedding capacity which may be achieved by converting the watermark in to quick response code (QR Code). The QR code consumes a less space for large information compared to any other existing formats. In this paper an approach is proposed to implement the digital watermarking technique for the medical images which comprises of the techniques: Integer wavelets transform (IWT), Bit plane method and quick response code (QR code). After the watermarking process, the watermarked image is evaluated against some of the parameters to know the efficiency of technique being employed. The experiment is carried out for two different bit planes and the results are compared to show embedding in which of the bit plane number results in more efficiency and finally the conclusion is made.