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.
This paper proposes a method to increase the accuracy of human silhouette extraction using background subtraction. Most silhouette extraction algorithms identify shadows when they should not, fail when illumination changes and absorb stationary objects into the background model. An algorithm is proposed that separates the chromatic and brightness changes in a video to clearly differentiate foreground...
This paper proposes a real-time application for detecting the moves of a chess game given a video stream from a camera positioned over the board. A custom implementation based on square identification of flood filled regions is used to detect colored chessboards in arbitrary backgrounds. The detected board is transformed to a normalized image, and occupancy of the chessboard is determined by classifying...
Machine vision lighting systems must be designed to evenly illuminate scenes, so that objects' appearances do not change depending on their position. This is challenging when imaging 3D scenes where the camera's field of view or depth of field are large. This paper describes a scheme to design effective lighting systems in such situations: lighting across the scene is modelled, and positions of lights...
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.