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Many-core processors provide the raw computation power required by modern high-performance multimedia and signal processing workloads. The translation of this into execution performance is often constrained by the overheads of communication between concurrent tasks. This paper presents Pronto, a low overhead message passing system which simplifies the semantics of data movement between communicating...
In this paper a lossless compression scheme is presented. In this scheme we have compared our newly proposed model with lossless predictive code (LPC) and differential pulse code modulation (DPCM) and we have shown how our model is more advantageous than LPC and DPCM. This newly proposed scheme for Huffman coding will achieve higher compression as we have reduced the mean value of the pixel in the...
Compressed video data is very sensitive to channel-induced errors and network losses. Most conventional unequal error protection techniques involve forward error correction codes of different rates or asymmetric signal constellations for data of different priorities. It is yet unknown if combining the above two techniques can further improve performance. In this paper, we investigate rate-compatible...
Phonotactic approach, phone recognition to be followed by language modeling, is one of the most popular approaches to language identification (LID). In this work, we explore how language identification accuracy of a phone decoder can be enhanced by varying acoustic resolution of the phone decoder, and subsequently how multiresolution versions of the same decoder can be integrated to improve the LID...
In this paper, we discuss a novel priority assignment and packetization scheme to transport H.264/AVC video packets over wireless networks. Specifically, we discuss a comprehensive packet priority assignment scheme for unequal error protection, followed by the use of adaptive network abstraction layer unit (NALU) sizes and NALU fragmentation schemes. These schemes use the standard-compliant decoder...
Recently macroblock based technique for backward playback of MPEG video streaming has been discussed in which the network bandwidth and buffer size requirements are less. In this technique, the macroblocks are divided into two categories backward macroblock (BMB) and forward/backward macroblock (FBMB) based upon their motion characteristics. In this paper, we propose a new method in which the network...
In this paper, voice signal compression and spectrum analysis (VSCSA) is a technique that is used to compress transparent high quality voice signals upto 45% - 60% of the source file at low bit rate 45 kbps with same extension (i.e. .wav to .wav), then voice spectrum analysis (VSA) is started. Voice signal compression (VSC) is done by using adaptive wavelet packet a tool of MatLab for decomposition...
In this paper we propose a steganography technique based on Stantlet transform and T-codes. The Stantlet transform are wavelet-like transforms that provides better time localization and signal compression than the conventional discrete cosine transforms (DCT) and discrete Haar-wavelet transforms. T-codes are used for better embedding capacity and decoding efficiency. The proposed method first encodes...
This paper presents a distributed source coding scheme for two correlated image data using Log-MAP and SOVA decoders. Both decoderspsila peak signal to noise ratio (PSNR) performance has been studied in symmetric as well as asymmetric turbo codes environment. Turbo codes are promising for distributed source coding (DSC) because of their simple encoding implementation and impressive decoding performance...
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