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.
We propose an automatic approach to detect falls in home environment. A Support Vector Machine based classifier is fed by a set of selected features extracted from human body silhouette tracking. The classifier is followed by filtering operations taking into account the temporal nature of a video. The features are based on height and width of human body bounding box, the user's trajectory with her/his...
This paper demonstrates how channel coding can improve the robustness of spatial image watermarks against JPEG DCT-based compression. Two error-correction coding (ECC) schemes are used here. One scheme, referred to as the vertical ECC (VECC), is to encode information bits in pixel levels by error-correction coding where the Gray code is used to improve the performance. The other scheme, referred to...
This paper describes a novel color hardcopy watermarking embedding. The proposed color embedding provides high transparency by modulating the watermark into the value and saturation color components of the document. After the color document is printed and distributed, the message is decoded by scanning the document and applying the proposed post processing based on a Laplacian of Gaussian whitening...
The paper introduces multiscale spatial Weber local descriptor (MSWLD) for robust face recognition system. In the proposed method, WLD is calculated in different neighborhood (multiscale) and WLD histograms are obtained from blocks of an image to preserve spatial information. WLD histograms from different blocks are then concatenated to produce the final feature set of a face image. Fisher ratio is...
In the social networks, rumors can spread and affect the society. To characterize rumor propagation in scale free networks, we propose a rumor spreading model which uses the acceptability factor to control the rumor. In this model we introduced a new compartment of stifler who rejects the rumor in comparison with existing SIR model. An ignorant can reject the rumor and become stifler when it gets...
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.