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.
Trichromacy might have evolved in primates for the purpose of emotion recognition [1]. Emotional states change the quantity of blood and its oxygenation under the skin, which cause subtle changes in skin color to become visible, especially in the face. We manipulated photos of basic emotional expressions so that skin color was either congruent or incongruent (according to [1]) with the expression...
Automatic facial action unit (AU) detection from video is a long-standing problem in computer vision. Two main approaches have been pursued: (1) static modeling - typically posed as a discriminative classification problem in which each video frame is evaluated independently; (2) temporal modeling - frames are segmented into sequences and typically modeled with a variant of dynamic Bayesian networks...
We propose to describe a new SVM-based method of face recognition, with RBF kernels, relying on class redundancy. The images extracted from the video flow are formatted then reduced by a PCA technique. The built vectors are used in the training phase to set up the SVMs. Some image pre-processing steps are applied in order to improve the results. We present results, in the form of a set of curves,...
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.