Image Security using Self embedding Fragile Watermarking Method
نویسندگان
چکیده
منابع مشابه
Self-embedding Fragile Watermarking Scheme Based on Bicubic Prediction
To improve the quality of recovered images, a selfembedding fragile watermarking scheme is proposed based on the bicubic prediction. To take into account the PFA and the watermark payload, the 6-bit recovery data of a 2×2 block and the 8-bit key-based data of a 4×4 block are generated and inserted in the other 2×2 block and 4×4 block based on secret key, respectively. The validity of a 2×2 imag...
متن کاملSemi-fragile Watermarking in Biometric Systems: Template Self-Embedding
There has been a lot of work done during the last years proposing watermarking (WM) techniques to enhance biometric systems security in some way. Here, the aim of WM is to ensure the integrity and authenticity of the sample data acquisition and transmission process. During data acquisition, the sensor (i.e. camera) embeds a watermark into the acquired sample image before transmitting it to the ...
متن کاملAttack Detection through Image Adaptive Self Embedding Watermarking
Now a days, a significant part of commercial and governmental organisations like museums, cultural organizations, libraries, commercial enterprises, etc. invest intensively in new technologies for image digitization, digital libraries, image archiving and retrieval. Hence image authorization, authentication and security has become prime need. In this paper, we present a semi-fragile watermarkin...
متن کاملA Sharing-Based Fragile Watermarking Method for Authentication and Self-Recovery of Image Tampering
This study presents an authentication method with self-recovery ability. The hidden watermark in the proposed method not only detects and locates the tampered portion of an image, but also self-recovers the tampered portion. To increase the ability to recover from tampering, the recovery data are shared by using an (r, n) threshold scheme and then scattered all over the image. Experimental resu...
متن کاملSecure fragile watermarking method for image authentication with improved tampering localisation and self-recovery capabilities
In this paper, we present a new fragile watermarking method aimed at providing improved tampering localisation and self-recovery capabilities. First, a secure blockwise mechanism, resilient to cropping, is used to localise distorted blocks of pixels. Subsequently, the tampering localisation accuracy is refined by means of an iterative pixel-wise mechanism, which estimates the original watermark...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Research Journal on Advanced Science Hub
سال: 2020
ISSN: 2582-4376
DOI: 10.47392/irjash.2020.38