The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we present a robust watermarking algorithm for digital image using SIFT (Scale-invariant feature transform) feature points and realizes the blind detection. The algorithm uses SIFT feature points on the host image to decide the embedding location and capacity, and adjusts the size of the binary watermark with Neighbor interpolation, and embeds the watermark into DCT low-frequency coefficients...
An algorithm is proposed based on multiple choice of video watermarking scheme, watermark information is embedded in the video file at the video encoding stage. The scheme implements three main functions, including an optional multi-algorithm, embedded in the proportion of adjustable and extract frame number can set. We development a video watermarking system under the program design, experimental...
Digital watermarking is considered as an efficient way to protect copyright of digital products. According to human auditory system (HAS), digital audio watermarking will be performed well by making use of auditory masking. Binary watermark information was embedded by classical quantization method in DCT domain after scrambled by Logistic map in chaos theory. Based on HAS and chaos theory, the proposed...
Digital watermark technology is an efficient way to copyright protection. First, DCT coefficients characteristics were analyzed. Then, a new watermark technique quantization was proposed. According to watermark information, DC coefficients of each 8times8 block were modulated in DCT matrix. And an adaptive method was given to obtain quantization distance. The experiments show it does well in transparency...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.