A Novel Color Image Watermarking Method based on Digital Wavelet Transform and Hungarian Algorithms
International Journal of Advanced Trends in Computer Science and Engineering
In the last few years, high data growth rate has funded the new outlook of ecommerce like electronically marketing, publishing, transmission and distribution of real time multimedia data in the form of video, audio, image and so on. Unauthorized access and copyright protection become a vital concern for almost all of the digital data service providers. In the past ten years, many researchers proposed various methods such as steganography, cryptography, watermarking and so on for different
... es  . Watermarking is proposed to protect digital data against unauthorized activities and help to maintain copyright ownership by embedding watermark data into host signal using some modification in its content ,  . The effectiveness of a digital watermarking depends on the few characteristics such as imperceptibility, robustness, security, and real-time processing  . Many researches have been done one gray scale image compare to color image because color image redundant data cannot be used sufficiently and cause poor ability to resist attacks which means the method has low robustness against image processing attacks . This paper proposed a new DWT-Hungarian method for color image watermarking to overcome this problem and the experimental results show that the proposed method has high robustness against JPEG (30) compression, cropping (50%), scaling, rotation and blurring attacks than other related works.