Lukasz Kondrad

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Scalable video coding (SVC) is an extension to H.264/AVC that enables encoding a video sequence once and using it subsequently at multiple operations points by different devices and applications. Forward Error Correction techniques may then be applied to the encoded video in order to enhance the robustness against transmission errors. Media aware FEC code(More)
In this paper, we propose a novel algorithm for constructing an Unequal Error Protection (UEP) FEC code targeted towards video streaming applications. A concatenation of a set of parallel outer block codes followed by a packet interleaver and an inner block code is presented. The algorithm calculates on the fly the optimal allocation of the code rates of(More)
One of the envisioned advantages of scalable video coding is its inherent suitability for achieving unequal error protection (UEP). UEP can be effectively used for graceful quality degradation under harsh network conditions. The Digital Video Broadcasting (DVB) organization recently introduced second generations of broadcast transmission technologies like(More)
In this paper, we discuss the deployment of SVC in DVB-H. We focus on the system configuration aspects, in order to improve the receiver performance in terms of perceived video quality and resulting power consumption. We evaluate a set of different multiplexing and FEC protection strategies in a simulation environment. We show that interleaved transmission(More)
In this paper, we present an approach for achieving application driven seamless handover across different wireless access networks. The target is thereby to eliminate any content loss while minimizing the interruption duration that is perceived by the user during the handover procedure. Ultimately, the user experience will greatly benefit from the usage of(More)
Mobile broadcast services have experienced a strong boost in recent years through the standardization of several mobile broadcast systems such as DVB-H, ATSC-M/H, DMB-T/H, and CMMB. However, steady need for higher quality services is projected to surpass the capabilities of the existing mobile broadcast systems. Consequently, work on new generations of(More)
The Digital Video Broadcasting organisation has recently introduced the second generation of terrestrial broadcast transmission standards, DVB-T2. The newly introduced tools ensure significant gain in performance of DVB-T2 compared to the first generation variant of the standard. One of these tools is the new physical layer concatenated forward error(More)
In this study, a novel approach to perform unsupervised color correction on images captured with multiple cameras is presented. The proposed algorithm requires a minimal common reference area for each pair of cameras in the setup, which makes it well suited for high resolution panoramic images. Moreover, due to its simplicity it allows to cope with realtime(More)
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