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 work deals with textural segmenting of high resolution sidescan sonar images by using active contours and Gabor filters. In fact this method is a modification of Chan and Vese Active contour model. It makes the method suitable for textural segmenting of above said images. First, image is passed through a symmetric bank of Gabor filters. Then, filtered images that possess a significant component...
Thermal imaging techniques have been applied to detect and measure mental stress in polygraph screening and other applications. Mental stress is highly correlated with the activation of the corrugator muscle on the forehead. The vessels that supply blood to the corrugator muscle, proportionally to its degree of activation, are the supraorbital vessels. The rate of blood flow in these vessels can be...
In this paper the authors present a technique suitable for segmenting high resolution sidescan sonar images, which is a problem that may arise in military or civilian applications. To this end, they use the "active contours without edges" model that was proposed by Chan and Vese.
The technique discussed in this article proposes to distinguish between unattended and stolen objects by combining shape and appearance similarity measures of foreground objects observed in consecutive frames of a video. Static objects are detected by examining trajectories and people are removed from consideration. Object shape boundary is first refined using active contours. Shape similarity is...
In this paper a new approach for detecting unattended or stolen objects in surveillance video is proposed. It is based on the fusion of evidence provided by three simple detectors. As a first step, the moving regions in the scene are detected and tracked. Then, these regions are classified as static or dynamic objects and human or nonhuman objects. Finally, objects detected as static and nonhuman...
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.