Howtosignalprocessing
- What are the two types of watermarks?
- What is dual watermarking?
- What is Hybrid watermarking?
- What is blind watermarking technique?
What are the two types of watermarks?
There are two types of digital watermarking, visible and invisible.
What is dual watermarking?
Dual watermarking based system for privacy protection and content authentication of multimedia. • High robustness, offering threat identification and localization. • Preservation of stego image's quality via strong coefficient correlation between two selected neighborhood blocks.
What is Hybrid watermarking?
A hybrid watermarking scheme for multimedia data such as digital image, digital video is proposed in this paper. The scheme utilizes various image processing transforms and Compressive Sensing (CS) to achieved fragility and security for multimedia data.
What is blind watermarking technique?
It is a blind watermarking method, which means the original image as well as the original watermark are not required at the time of extraction. The proposed algorithm has used the gray image for embedding a pre-defined watermark into an image and a binary logo image such as the watermark.
