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.
360 degree video compression and delivery is one of the key components of virtual reality (VR) applications. In such applications, the users may freely control and navigate the captured 3D environment from any viewing direction. Given that only a small portion of the entire video is watched at any time, fetching the entire 360 degree raw video is therefore unnecessary and bandwidth-consuming. In this...
As the demand for IPTV services increases, one of the main challenges for offering these services is fair bandwidth allocation among users requesting different IPTV video services. Most existing approaches treat all video streams equally, without taking into consideration that some video channels require higher bit rates than the others to reach the same quality. In this paper we present several algorithms...
In networked video applications where the sustainable bandwidths vary greatly among the receivers and in time, one must be able to code a video or adapt a precoded-bitstream to a wide range of bit rates. It is critical to choose appropriate frame size, frame rate and quantization stepsize (QS) to optimize the perceptual quality for a target bit rate. Furthermore, it is important to understand the...
This work investigates the impact of periodic frame rate variation on perceptual video quality. Among many dimensions of frame rate variation, as a first step we focus on videos in which two frame rates alternate over fixed intervals. We present subjective test results, and analyze the influence of several factors (including the average frame rate, the frame rate deviation, and the video content)...
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.