• K.DURGA GANGA RAO
• T.RAVINDRA

This paper presents a blind dual watermarking mechanism for digital color images in which invisible robust watermarks are embedded for copyright protection and fragile watermarks are embedded for image authentication. For the purpose of copyright protection, the first watermark is embedded using the discrete wavelet transform in YCbCr color space, and it can be extracted blindly without access to the host image. However, fragile watermarking is based on an improved least significant bits replacement approach in RGB components for image authentication. The authenticity and integrity of a suspicious image can be verified blindly without the host image and the original watermark. The combination of robust and fragile water-marking makes the proposed mechanism suitable for protecting valuable original images. The experimental results indicated that the proposed watermarking mechanism can withstand various processing attacks and accurately locate the tampered area of an image. With an digital watermark scheme is proposed to protect the copy right of network digital image. In this different types of water marks attacks by analysing the attack principle, a double key water mark embeddeding and extracting scheme is proposed to display encryption and decryption images for further safetyness of an watermarked image during transmission and reception process.

Digital watermarking, Authentication, copyright protection, discrete wavelet transform (DWT), least significant bit (LSB), watermarking

"BLIND DUAL WATERMARKING FOR COLOR IMAGES USING DOUBLE KEY AUTHENTICATION ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.746-749, June-2019, Available :http://www.jetir.org/papers/JETIR1906883.pdf

"BLIND DUAL WATERMARKING FOR COLOR IMAGES USING DOUBLE KEY AUTHENTICATION ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp746-749, June-2019, Available at : http://www.jetir.org/papers/JETIR1906883.pdf