Robustness of a Blind Image Watermark Detector Designed by Orthogonal Projection

Blind digital watermarking, which can detect watermark without using the original image, is a key technique practical intellectual property protecting systems and concealment correspondence systems. In this paper, we discussed a blind detection method for the digital image watermark. The theories research show that the orthogonal projection sequence of a digital image is one-to-one correspondence with this digital image. To make use of this conclusion, we designed and realized a kind of blind watermark detector with the good performance. To calculate the correlation value between the image and watermark, the intensity information of digital image is not adopted, but the orthogonal projection sequence of this image is adopted. Experiment results show that this watermark detector not only to have very strong resistant ability to translation and rotation attacks, but also to have the good robustness to Gaussian noise. Performance of this watermark detector is better than general detector designed by making use of the intensity information directly. The conclusions obtained by experiments are useful to the research in the future

A review on medicinal properties of saffron toward major diseases

The stigma of Crocus sativus, known as saffron, is one of the most expensive spices in the world. The bioactive components in saffron, picrocrocin, crocin, and safranal, have demonstrated a wide range of uses and capabilities in the medical field. This review is focused on the potential therapeutic applications of saffron on diabetes mellitus (DM), antitumor, anticancer, anti-depressant, Alzheimer’s disease (AD), cardiovascular disease (CVD), erectile dysfunction and antibacterial effects

PENERAPAN DIGITAL WATERMARK SEBAGAI VALIDASI KEABSAHAN GAMBAR DIGITAL DENGAN SKEMA BLIND WATERMARK

Digital watermarking is an important field of technological development that has now grown in the digital era. Digital era encourage the spread digital images on internet by the websites with a large scale. On the other hand, digital images are objects that are very easy to change or manipulate, and even copied irresponsibly. Meanwhile it is very difficult to prove the image has been changed by existing equipment at this time, and it is difficult to prove its ownership. This is an important issue, when the image is one of the evidences for legal cases, news reporting and medical filing, where the image must be ensured that the digital image is not subject to change or manipulation. In this paper, we present the application of digital watermarking to authentication and ownership validation of digital image so the image can be ascertained its validity. This research applies blind watermark scheme by using secret key that inserted at least-significant bits (LSB) of host image therefore the watermark is invisible watermark. The result of watermarked image has a small decrease in quality with the mean value of PSNR and MSE about 34.08 and 14.62