Mehdi Rezaei

Learn More
Digital video stabilization (DVS) allows acquiring video sequences without disturbing jerkiness, removing unwanted camera movements. In this paper, we propose a novel DVS algorithm that adaptively compensates the camera jitters utilizing an adaptive fuzzy filter on the global motion of video frames. The adaptive fuzzy filter is a simple infinite impulse(More)
In this paper we propose a special bit allocation method which can be used in most rate control algorithms in variable rate video applications. In real-time video communication applications, we need a constant short-term average bitrate, while in variable bitrate applications such as streaming and local recording applications, a constant long-term average(More)
In this paper we propose a real-time, low-complexity video rate control algorithm designed to obey buffer constraints. The algorithm is optimized for streaming and local recording applications in mobile devices. Today, most mobile phones include a digital camera that can be used to capture video. The on-phone processor technology has become powerful enough(More)
—A novel joint video encoding and statistical multi-plexing (StatMux) method for broadcasting over digital video broadcasting for handhelds (DVB-H) channels is proposed to improve the quality of encoded video and to decrease the end-to-end delay in a broadcast system. The main parts of end-to-end delay in a DVB-H system result from a time-sliced(More)
—A novel method is proposed which minimizes the tune-in time of " channel zapping " , i.e. changing from one audiovisual service to another, in IP datacasting (IPDC) over Digital Video Broadcasting for Handheld terminals (DVB-H). DVB-H uses a time-sliced transmission scheme enabling a receiver to turn radio reception off for those time-slices that are not(More)
A novel video encoding and splicing method is proposed which minimizes the tune-in time of " channel zapping " , i.e. changing from one audiovisual service to another, in IPDC over Digital Video Broadcasting for Handheld terminals (DVB-H). DVB-H uses a time-sliced transmission scheme to reduce the power consumption used for radio reception. Tune-in time in(More)
In this paper we propose a low-complexity fuzzy video rate control algorithm with buffer constraint designed for real-time streaming applications. While in low delay video communications bit streams with constant bitrate are required, in streaming application more delay and variation in bitrate is acceptable. The described video rate control algorithm (RCA)(More)
A novel video splicing and rate control method is proposed which minimizes the tune-in time in IPDC over DVB-H. DVB-H uses a time-sliced transmission scheme to reduce the power consumption used for radio reception. One of the significant factors in tune-in time is the time from the start of media decoding to the start of correct output from decoding, which(More)
A novel fuzzy video rate control algorithm (RCA) with delay and quality constraints is proposed for video streaming over DVB-H (Digital Video Broadcasting for Handheld terminals) application. In this application a variable bit rate (VBR) bit stream is used to improve the quality and compression performance of encoded video at the expense of buffering delay(More)