This paper proposes an efficient SNR scalable extension for the H.264/AVC video coding standard. The coder consists of two motion compensated sub-coders generating the base and the enhancement layers. The base layer is fully H.264 compatible while the enhancement layer bitstream has been modified. The enhancement layer coder uses the information of both layers in order to improve the coding eff...

Memory bandwidth issue becomes more and more critical in designing video coding system especially in scalable video coding due to its extra inter-layer prediction. This paper proposes a low memory bandwidth prediction method for inter and inter-layer residual prediction. The proposed method combines two predictions into one prediction process and reuses its data for lowering memory bandwidth re...

The increased popularity of video streaming over the Internet attracts numerous clients. These clients are quite heterogeneous in terms of network bandwidth and processing capacity. To accommodate this heterogeneity, fine-grained scalable (FGS) coding of video streams has been proposed in the literature. FGS streams are composed of two layers: base layer, which provides basic quality, and a sin...

A transform coding method for coding higher layers of a multi-layer embedded speech and audio coding system using factorial pulse codebook is proposed. The proposed methods use frequency selective attenuation of lower layer output to reduce the spurious noise generated when speech model based coding method is used in lower layers for coding of the nonspeech signals. The frequency selective atte...

Deep Convolutional Neural Networks (DCNN) require millions of labeled training examples for image classification and object detection tasks, which restrict these models to domains where such datasets are available. In this paper, we explore the use of unsupervised sparse coding applied to stereo-video data to help alleviate the need for large amounts of labeled data. We show that replacing a ty...

In this paper, we investigate optimal cross-layer design of congestion control, routing, onehop two-way inter-commodity (OTIC) network coding and scheduling in wireless multihop networks utilizing the broadcast advantage of wireless medium. We first present an achievable rate region with OTIC network coding by introducing virtual flow rates in a node. Then we formulate the network utility maxim...

We introduce a novel approach for compressive coding at the sensor layer for an integrated imaging system. Compression at the physical layer reduces the measurements-to-pixels ratio and the data volume for storage and transmission, without confounding image estimation or analysis. We introduce a particular compressive coding scheme based on the quantized Cosine transform (QCT) and the correspon...

In this paper, a simple and novel cross-layer adaptive modulation and coding (AMC) scheme, which increases the energy efficiency of the wireless communication system is proposed. Traditionally, AMC has been used to improve MAC-layer performance in terms of coded bit error rate, packet error rate, and throughput. The modulation and coding scheme is switched according to signal-to-noise ratio thr...