Πλοήγηση ανά Θέμα "Signal encoding"
Αποτελέσματα 1-18 από 18
-
Adaptive Tile Parallelization for Fast Video Encoding in HEVC
(2017)As large multimedia providers rely more and more on Cloud resources to perform video coding and transcoding, designing fast and efficient coders that take advantage of parallelization, particularly for the new video standard ... -
A class of multi-carrier CDMA access methods for wide-bandwidth wireless channels
(2005)In this article we describe and evaluate a general class of synchronous multi-carrier CDMA methods. In the proposed methods each accessing user is encoded by a Hadamard sequence and a multi-carrier (MC) encoder. The ... -
Combining tile parallelism with slice partitioning in video coding
(2018)Tiles and slices provide different frame partitioning options. While they can both be used for video coding parallelization, tiles offer better scalability to the number of available processors, especially as far as video ... -
Distributed caching algorithms in the realm of layered video streaming
(2019)Distributed caching architectures have been proposed for bringing content close to requesters, and the key problem is to design caching algorithms for reducing content delivery delay, which determines to an extent the user ... -
EasyHarvest: Supporting the deployment and management of sensing applications on smartphones
(2014)In this paper we present a first prototype of the EasyHarvest framework, which aims to simplify the deployment and controlled execution of large-scale sensing applications on smartphones. On the one hand, application owners ... -
A Fast Heuristic for Tile Partitioning and Processor Assignment in Hevc
(2018)As the compression efficiency of HEVC comes at the cost of high complexity, especially in the encoder's side, improved parallelization techniques that will speedup the encoding process are essential. One of the parallelization ... -
A Framework for Efficient N-Way Interaction Testing in Case/Control Studies with Categorical Data
(2021)Goal: Most common diseases are influenced by multiple gene interactions and interactions with the environment. Performing an exhaustive search to identify such interactions is computationally expensive and needs to address ... -
Joint Object Affordance Reasoning and Segmentation in RGB-D Videos
(2021)Understanding human-object interaction is a fundamental challenge in computer vision and robotics. Crucial to it is the ability to infer 'object affordances' from visual data, namely the types of interaction supported by ... -
Joint packet retransmission and spectrum sensing for cognitive radio networks
(2014)We model and simulate a joint design of packet retransmission through a hybrid automatic repeat request (HARQ) protocol at the data link layer and spectrum sensing (SpSe) at the physical layer for cognitive radio networks ... -
Joint Source Encoding and Networking Optimization for Panoramic Video Streaming over LTE-A Downlink
(2017)With the increasing capacity of wireless networks, more people would like to consume the 360-degree panoramic video (PV) in virtual reality (VR) applications as its immersive experience. However, due to the super-high ... -
Linear current-to-time converter
(2019)In this work, a new current-to-time converter (CDC) based on current-starved inverter is proposed. The time delay of the output pulse edges is linearly proportional to a control current. The benefits of the proposed topology ... -
Low Power EEG Data Encoding for Brain Neurostimulation Implants
(2022)Neurostimulation devices applied for the treatment of epilepsy that collect, encode, temporarily store, and transfer electroencephalographic (EEG) signals recorded intracranially from epileptic patients, suffer from short ... -
Low-Power Electroencephalographic Data Encoding System for Implantable Brain Stimulation Systems
(2021)This paper studies the Delta encoding scheme and its effect on power dissipation, for wireless transmission from implantable devices. The study was performed on data from electroencephalographic signals. For the implementation ... -
Multimodal sign language recognition via temporal deformable convolutional sequence learning
(2020)In this paper we address the challenging problem of sign language recognition (SLR) from videos, introducing an end-to-end deep learning approach that relies on the fusion of a number of spatio-temporal feature streams, ... -
A Multirate Fully Parallel LDPC Encoder for the IEEE 802.11n/ac/ax QC-LDPC Codes Based on Reduced Complexity XOR Trees
(2021)This article proposes an encoding method based on a two-step encoding algorithm for the 12 quasi-cyclic (QC)-low-density parity-check (LDPC) (QC-LDPC) codes specified in the IEEE 802.11n/ac/ax standards. The proposed ... -
On improving the speedup of slice and tile level parallelism in HEVC Using AVX2
(2017)HEVC has emerged as the new video coding standard promising improved compression ratios (for the same quality) by up to 50% compared to H.264/AVC. To achieve this performance HEVC requires increased computational overhead ... -
Review and comparative analysis of parallel video encoding techniques for VVC
(2020)In this paper we review and summarize research results concerning video encoding parallelization, with a primary focus on medium and fine grained methods that operate at block or inner block levels. Taxonomies are illustrated ... -
Tile Based Wavefront Parallelism in HEVC
(2020)High Efficiency Video Coding (HEVC) was developed to tackle the 4K resolution era, achieving up to 50% more compression efficiency (for the same video quality) compared to its predecessor H.264/AVC. However, this performance ...