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 two watermarking schemes for images using the low-pass frequency coefficients and high-pass complex frequency coefficients of the Dual-Tree Complex Wavelet Transform (DT-CWT) of the image, the distinctive characteristics of the two schemes can lead to different applications. We investigate the problem of embedding binary watermark sequence in DT-CWT domain, which is a challenging...
This paper investigates the problem of data hiding for binary images authentication in morphological binary wavelet transform domain. Directly using the detail coefficients as a location map to determine the data hiding locations is difficult to achieve blind watermark extraction. Hence, we view flipping an edge pixel as shifting the edge location one pixel horizontally and vertically. Based on this...
In this paper, a method for watermarking on text document images to authenticate the owner or authorized user is proposed. The proposed method makes use of the integrated inter character and word spaces for watermark embedding. An overlapping component which is of size three is utilized, whereby the relationship of the left and right spaces of the character is employed for the watermark embedding...
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.