[PDF] Top 20 Time-Frequency and Time-Scale-Based Fragile Watermarking Methods for Image Authentication

... proposed fragile watermarking method, based on wavelet analysis, uses complex chirp signals as ...wide frequency range of such signals making the watermarking capacity very high and ... See full document

... Image watermarking algorithms are mainly concentrated on spatial or spectral ...successful methods have been presented using both approaches, they also have limitations and ...the image area ... See full document

... (authentication) methods with tamper recovery ability have recently been ...digital watermarking scheme for images’ tampering detection, loca- tion, and ...the authentication watermark of each ... See full document

... same time, the data shared can be easily manipulated with the help of image processing tools such as ...topic. Image authentication can be implemented using digital signatures or digital ...of ... See full document

... using image authentication method user can investigate whether images are attacked by attacker in between the channel or ...these authentication schemes. Image authentication approaches ... See full document

... the image is maliciously manipulated or not and locate the tampered ...to image noise, information content, and ability to provide faithful image representation [23] and thus have been used in many ... See full document

... self-embedding fragile watermarking scheme have been ...for authentication with recov- ery capability: authentication bit and restoration ...the image feature itself which is then ... See full document

... spatial-domain methods, frequency-domain methods are more widely ...for watermarking in the frequency domain is that the characteristics of the human visual system (HVS) are better ... See full document

... Digital watermarking has been developed as an effective solution for multimedia data ...protection. Watermarking usually assumes embedding of secret signal that should be robust and imperceptible within the ... See full document

... context, watermarking medical image has been widely recognized as an appropriate technique to enhance the security, authenticity and content ...verification. Watermarking image may bring ... See full document

... problem. Fragile wa- termarking methods are very sensitive to the slightest dete- rioration of the image, but they o ff er only a strict integrity service, relatively far from users’ ...of ... See full document

... Digital image watermarking may be a branch of Information hiding in which the ownership information will be hidden in the cover ...Digital image watermarking, some vital problems like ... See full document

... some authentication techniques are needed in order to maintain authenticity, integrity, and security of digital video ...digital watermarking (WM), a data hiding technique has been considered as one of the ... See full document

... high frequency sub-bands at the finest scale of the luminance component are ...the watermarking process of the embeddable ...coarsest scale are involved in generating the signature, which is ... See full document

... proposed watermarking scheme has been tested on various musical signals, as well as on a speech signal, and a set of different attacks has been applied (fil- tering, resampling, noise, cropping, and MP3 ... See full document

... robust watermarking, a watermark usually carries owner information in order to validate who the relation database belongs to ...as image [10, 26], speech [19, 43] or owner information [44, ...robust ... See full document

... PSNR , SSIM and bitrate are used for performance evaluation. PSNR is a very popular and widely used evaluation method, it is known that its correlation to subjective quality measures is not always good, because it ... See full document

... Most watermarking algorithms are either robust watermarking for copyright protection or fragile watermarking for tamper ...a fragile video watermarking algorithm that has the ... See full document

... lossless watermarking scheme for halftone image Authentication‖[11] .... Authentication watermark is a hidden data inserted into an image that can be applied to detect any unauthorized ... See full document

... , (19) for which the CWT taken along the ridge, i.e. at the max- ima of its modulus, can approximately reconstruct x(t ). The inequality in Eq. (19), called the asymptoticity condi- tion, means that the instantaneous ... See full document