• Jahnavi S
• C. Nandini
• Niveditha S
• Aishwarya Naik
• Jacinth Hillson

With great demand of internet, it is very difficult to secure data over environment of internet. Watermarking is a technology which deals with security for digital data. Currently, digital image watermarking is widely implemented as a tool for copyright protection. So, research on image watermarking should continue to grow for improved copyright security. It involves the process of superimposing an image (original) on another image (watermark) and results a new image (watermarked) and from the generated image, watermark is also extracted. Image transform techniques are Discrete Fourier Transform (DFT), Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT).

Image watermarking, Discrete Cosine Transform (DCT), Discrete wavelet Transform (DWT), Peak Signal to Noise Ratio (PSNR).

"Watermarking Technology for Protecting Copyright combining Discrete Wavelet Transform (DWT) And Discrete Cosine Transform (DCT)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.106-111, May-2019, Available :http://www.jetir.org/papers/JETIR1905C16.pdf

"Watermarking Technology for Protecting Copyright combining Discrete Wavelet Transform (DWT) And Discrete Cosine Transform (DCT)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp106-111, May-2019, Available at : http://www.jetir.org/papers/JETIR1905C16.pdf