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Stereoscopic video coding research has received considerable interest over the past decade as many 3D displays have been developed. Unfortunately, the vast amount of multimedia content needed to transmit or store a stereo image pair or video sequence has hindered its use in commercial applications. As H.264 offers significantly enhanced compression and a(More)
In this paper, we propose a new motion estimation algorithm based on evolutionary strategy (ES) for the H.264 video codec applied to monoscopic video. The proposed technique applies in macroblock basis and performs a parallel local search for the motion vector associated with the minimum motion compensated residue. For this purpose (mu+lambda)-ES is used(More)
Video compression has never been more essential than it is today. With the rapid growth of the Internet and the introduction of high-definition media, the need for continual improvements on video coding techniques is vital to keep up with emerging technologies. Dirac video codec is probably new to the video coding researchers, but it has long been a focal(More)
Due to the provision of a more natural representation of a scene in the form of left and right eye views, a stereoscopic imaging system provides a more effective method for image/video display. Unfortunately the vast amount of information that needs to be transmitted/stored to represent a stereo image pair/video sequence, has so far hindered its use in(More)
In this paper, a semi-hierarchical way of motion estimation for the Dirac video encoder is proposed. The algorithm requires fewer numbers of SAD calculations per block while the compression efficiency and PSNR remain the same. There is huge saving in terms of SAD calculation per block especially in moderate level motion sequences. Moreover, the proposed(More)
In recent years, wavelet-based image and video coding systems that utilize a wide range of spatial-temporal-SNR scalability with state-of-the-art coding performance has been proposed in the literature. The strong market acceptance of the new scalable technology stems from advances in network technology as well as various requirements from terminal users(More)
In this paper, a new motion compensated interpolation (MCI) algorithm based on backward multiple reference frame (BMRF) MCI is introduced into distributed video coding (DVC) system to perform the interpolation of side information. The algorithm has been compared with two other common MCI methods (linear, bidirectional) in the aspects of PSNR performance,(More)
Although transmit Delay Diversity (DD) can provide a gain in indoor and other Non Line of Sight situations (NLOS), it can introduce degradation in rooftop reception. In fact, when the Ricean K factor of the channel is significantly high (e.g. Line of Sight reception), the channel performs similar to an AWGN channel where the performance degrades due to DD(More)
This paper describes work carried out by Brunel University and Broadreach Systems (UK) to quantify the advantages that can be achieved if transmit diversity is applied to systems employing the DVB standard. The techniques investigated can be applied to standard receiver equipment without modification. An extensive and carefully planned field trial was(More)
Having fast and efficient motion estimation is crucial in today's advance video compression technique. In this paper, a method which we call partial cost function calculation is proposed for faster cost calculation in finding the exact match for any type of block matching algorithms. It is based upon the reduced number of operations which follows a certain(More)