• N.Rushi Shrunga
• k.Tejovanth
• K. Sanjay Kumar
• K. Dheeraj Kumar

Notwithstanding the high availability of image contents, multimedia products propose very low quality pictures, primarily due to the fact that effective systems for the copyright protection of multimedia works are unavailable. A digital image can, in fact, be easily reproduced obtaining as many identical copies of it as we want, without any possibility to prevent it. To get around the problem, further than scrambling the data to be protected by means of cryptographic techniques, code carrying information about IPR could be invisibly embedded into them, in such a way to provide a mean to control their distribution. This is the aim of image watermarking techniques. In this paper general issue related to copyright protection of digital data as well as some items referring to the embedding of a watermark in the frequency domain, are discussed.

Frequency domain image filtering, high pass filter, low pass filter

"Digital Image Watermarking in Frequency Domain", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.559-562, June 2019, Available :http://www.jetir.org/papers/JETIR1907M73.pdf

"Digital Image Watermarking in Frequency Domain", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp559-562, June 2019, Available at : http://www.jetir.org/papers/JETIR1907M73.pdf