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This paper implements a process of video image streaming restoration through network streaming media Real time Transport Protocol (RTP) and H.264 video encoding technology. It is composed of transmission mode of RTP/RTCP, the decoding process of video image by H.264 based on FFmpeg and video displaying process on PC screen based on the multimedia library SDL
In this paper, we present and investigate a method to attack and remove multimedia steganography in digital audio data. Among the existing steganography methods that can be used to hide secret data in digital audio carriers, the Spread Spectrum methods are among the most effective and robust for embedding steganography data. Though there are currently a few research efforts on removing or destroying...
This paper proposed a THPHP (Task-based Hybrid Parallels and Hybrid Pipelines) scheme to implement multistandard video decoding algorithms, i.e. MPEG-2, H.264 and AVS (Audio Video coding Standard), on a heterogeneous coarsegrained reconfigurable multimedia processor called REMUS (REconfigurable MUltimedia System). Multiple level parallelism and multiple level pipeline techniques are proposed in this...
Raptor codes can provide good error correction capability and efficient encoding and decoding rates. Its fountain code property is effective in avoiding packet retransmission for both unicast and multicast service delivery. Hence, there are many wireless and broadband applications adopting it such as mobile multimedia broadcasting and broadband IPTV systems. In this paper, we present an efficient...
In this paper, a hybrid cache architecture with high versatility and a wide range of applications is proposed, which is effective in image and video processing. Meanwhile, a new 2D-based prefetching scheme for image and video processing, fully exploiting two dimension data locality, is used in this cache. In this scheme, Prefetching Address Generation (PAG) and Prefetching Time Generation (PTG) are...
Dynamic voltage and frequency scaling (DVFS) offers great potential for optimizing the energy efficiency of Multiprocessor Systems-on-Chip (MPSoCs). The conventional approaches for processor voltage and frequency adjustment are not suitable for streaming multimedia applications due to the cyclic nature of dependencies in the executing tasks which can potentially violate the throughput constraints...
Advances in wireless multimedia communication technologies enable new types of pervasive and ubiquitous applications such as mobile health care, environmental monitoring, facility monitoring and traffic surveillance. Among different factors concerned, energy efficiency is one of the most challenging issues in multimedia communication due to the resource constraints, and the requirements for high bandwidth...
The analysis of multimedia application traces can reveal important information to enhance program comprehension. However traces can be very large, which hinders their effective exploitation. In this paper, we study the problem of finding a \textit{k-golden} set of blocks that best characterize data. Sequential pattern mining can help to automatically discover the blocks, and we called \textit{k-golden...
Multiple international video standards in the market have been developed successfully for many commercial products. This paper proposes a new multimedia core and multi-core architecture for multi-standard video decoding. The proposed multimedia core is based on the 6-stage pipelined dual issue VLIW+SIMD architecture and efficient instructions for video decoding. SMIC 130nm process is used for implementation...
3G Internet connections are required for Internet broadcasting with smartphones in outdoor where wireless LAN connections are unavailable. However, it is not easy for the smartphone users broadcast over due to lack of the 3G transmission speed for video streaming in real time. Cell phone carriers, furthermore, tend to shift flat-rate data services to pay-as-you-go data services. 3G data traffic on...
With the increasingly efficient streaming of multimedia standard and the computational resources in the coarse grained reconfigurable architecture (CGRA), how to provide high data throughput for the CGRA for multimedia application in real time becomes a bottleneck challenge. In this paper, a data reuse method is proposed based on the pre-parsing mechanism of MB information in advance. The pre-parsed...
Base on 2D barcode DM and QR, a new 2D character barcode, is proposed in this paper. It is different with the traditional 2D barcode. It is a character matrix instead of the image barcode. The encoding rules, decoding rules and symbol structure of this character barcode are designed and implemented. Then the error-correcting code is studied and added into the encoded information. Finally the 2D character...
Traditional technology scaling of semiconductor chips followed Moore's Law. However, the transistor performance improvement will be limited, and designers will not see doubling of operating frequency every two years. Recently, 3-D integrated circuits that utilize through silicon via (TSV) for interconnection have been developed as an improved alternative to the Package-on-Package (PoP) and System-in-Package...
This paper details the technologies displayed by the authors at ICME 2012. The technologies are those of Variable-Ambisonics and Variable-Polar Pattern Reproduction. These technologies are demonstrated using virtual 2-dimensional speaker layouts via binaural headphone reproduction. The technologies offer benefits over standard pair-wise panning of surround sound by offering on-the-fly changing of...
Reversible data hiding has its attractions and possible drawbacks in researches, and it has the potential to extend to digital rights management (DRM) applications. For reversible data hiding, secret information can be hidden into original multimedia content, and the content with hidden data can be transmitted to the receiver. After reception, receiver employs corresponding algorithm to decode the...
AL-FEC (Application-Layer FEC) is already in used for protecting streaming and file delivery services against packet losses in the field of wide-area multimedia broadcasting, such as in DVB-H and 3GPP MBMS (Multimedia Broadcast Multicast Service) mobile TV systems. However, it is still not a well-studied approach for applying AL-FEC to WiFi multicast since guaranteed bandwidth for a multicast service...
Although wide area wireless network capacity is growing significantly, the consumer demand for popular multimedia content delivered to mobile devices over these networks is growing even faster. An attractive alternative is to deliver multimedia content via broadcast, thereby economizing on the usage of network capacity. We describe best practice techniques for using forward error correction and interleaving...
In this paper, we propose a new structure for the transform domain Wyner Ziv coding to achieve fast and light-weight encoding of standard-definition (SD) video. The proposed scheme divides each picture into multiple tiles which do not have computational dependencies between each other in order to facilitate parallelization. The proposed parallelized encoder is implemented using OpenMP API. In addition,...
In this paper, a power-aware and low power multimedia processor is presented. A novel clock gating scheme and dynamic frequency selection (DFS) are implemented to minimize the power dissipation and it integrates 7-standards (H.264 / VC1 / RV / AVS / MPEG-1 / MPEG-2 / MPEG-4) with several resource-sharing techniques in both algorithmic and architectural levels so as to achieve significant area and...
Emerging trends in applications with the requirement of considerable computational performance and decreasing time-to-market have urged the need of multiprocessor systems. With the increase in number of processor there is an increased demand to efficiently control the energy and power budget of such embedded systems as well. Dynamic voltage frequency scaling (DVFS) strategies permits to control this...
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