Colored Digital Image Watermarking using the Wavelet Technique

Abstract

With the revolution of information technology and Wide Area Networking, data has become less and less private where the access of media as well as the attempts to change and manipulate the contents of media data have become a common case. For that, we need to use a watermarking technique to protect the copyright of the media as well as for digital right management but without leaving a visual effect. We presented a watermarking technique that deals with images where the used technique to embed a wavelet compressed watermark image within the least significant bit (LSB) of the cover image pixels in a specific pattern which won't be visible after embedding and will cause the cover image to become copyrighted using the embedded watermark image that can be extracted later

Distribution Key in Eight Bit's Color Image Algorithm

“…Also, they propose a technique for robust digital watermarking system looking to find a relationship between the image contrast of the coverage and robustness of increasing the resistance of attacks. Al-Hunaity et al (2007) proposed a watermarking technique that deals with images in which the technique used to embed a watermark in the compressed wavelet Least Significant Bit (LSB) of pixels in the cover image in a specific pattern that will not be visible after coating and cause the cover image to become copyright by using the image of the watermark can be extracted later. Liu et al (2006) propose a watermarking scheme for digital image based on the Distributed Discrete Wavelet Transformation (DDWT) method with some modifications to improve its robustness.…”

Hop Horse-Image Authentication Scheme

“…Watermarking techniques concern compressed images are found in [18][19][20][21][22][23]. The work in [18] proposed a blind scheme to authenticate compressed images by adding signaldependent noise that is embedded into the image at the time of acquisition.…”

“…The generated watermark image is embedded into DWT-DFRNT using quantization technique. A semi-blind watermarking technique that embeds a wavelet compressed watermark image within the least significant bit (LSB) of the original image pixels is introduced in [22] achieving a PSNR of 63 dB. A multipurpose watermarking scheme is proposed in [23] by quantizing the host image's wavelet coefficients and embedding two complementary watermarks that is be blindly extracted from the received image, achieving maximum PSNR of 41.2 dB.…”

علامة مائية رقمية للصور باستخدام مجال تحويل المويجات

“…For that, we need to use a watermarking technique to protect the copyright of the media as well as for digital right management but without leaving a visual effect. [1] The concept of digital watermarking arose while trying to solve problems related to the copyright of intellectual property in digital media. It is used as a means to identify the owner or distributor of digital data.…”