Results 191 to 198 of about 173,206 (198)

Context-adaptive hybrid variable length coding in H.264/AVC

2009 16th IEEE International Conference on Image Processing (ICIP), 2009
It is well observed that the nonzero transform coefficients for block-based hybrid video coding is more clustered in the low frequency region while more scattered in the high frequency region. Based on this observation, hybrid variable length coding (HVLC) was recently proposed, which divides each transform block into low frequency (LF) region and high
null Junlin Li, Ghassan AlRegib, Dihong Tian, Wen H. Chen, Pi Sheng Chang   +4 more
openaire   +1 more source

New bitstream structure for parallel context-adaptive-variable-length-coding decoding

Journal of Electronic Imaging, 2012
A context-adaptive-variable-length-coding (CAVLC) decoder cannot determine an exact start position of the k 'th syntax element until it decodes the ( k - 1 )'th syntax element, which makes parallel CAVLC decoding difficult. We propose a new bitstream structure to maximize parallelism of CAVLC decoding.
Yun Gu Lee, Kyung Hwan Cho
openaire   +1 more source

A new context-adaptive variable-length coding architecture

International Conference on Automatic Control and Artificial Intelligence (ACAI 2012), 2012
In this paper a new context-based adaptive variable length coding (CAVLC) architecture proposed particularly aims to be implemented with Field Programmable Logics. The architecture is composed of a macro-pipeline formed by three stages. In the first stage, all coefficients are scanned and syntactic element “level” is encoded partially if needed.
null Wang Wei, null Huang Zhan, null Rao Caibin   +2 more
openaire   +1 more source

High Performance Context Adaptive Variable Length Coding Encoder for MPEG-4 AVC/H.264 Video Coding

APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems, 2006
This paper presents a high-performance VLSI architecture for context adaptive variable length coding (CAVLC) used in the MPEG-4 AVC/H.264 video coding. Instead of only the coarse-grained 8times8 zero block skipping in the previous design, the proposed design implements the fine-grained zero skipping at the 4times4 block level and the individual ...
Min-Chi Tsai, Tian-Sheuan Chang
openaire   +1 more source

Application-Guided Power-Efficient Fault Tolerance for H.264 Context Adaptive Variable Length Coding

IEEE Transactions on Computers, 2017
This paper presents a fault-tolerance technique for H.264's Context-Adaptive Variable Length Coding (CAVLC) on unreliable computing hardware. The application-specific knowledge is leveraged at both algorithm and architecture levels to protect the CAVLC process (especially context adaptation and coding tables) in a reliable yet power-efficient manner ...
Shafique, M., Rehman, S., Kriebel, F., Khan, M. U. K., Zatt, B., Subramaniyan, A., Vizzotto, B. B., Henkel, J.   +7 more
openaire   +2 more sources

An efficient Context Adaptive Variable Length coding architecture for H.264/AVC video encoders

The 2012 International Conference on Advanced Technologies for Communications, 2012
In this paper, we present an efficient hardware implementation of a Context Adaptive Variable Length Coding (CAVLC) module for an H.264/AVC video encoder. To improve timing performance, a three-stage pipeline architecture is proposed including: input data statistical analysis, encoding and packing.
null Ngoc-Mai Nguyen, null Xuan-Tu Tran, Pascal Vivet, Suzanne Lesecq   +3 more
openaire   +1 more source

Reference frame context-adaptive variable-length coder: a real-time hardware-friendly approach for lossless external memory bandwidth reduction in current video-coding systems

Journal of Real-Time Image Processing, 2014
Video-coding systems require a large external memory bandwidth to encode a single video frame. Many modules of the current video encoders must access the external memory to read and write data resulting in large power consumption, since memory-related power is dominant in current digital systems. Moreover, external memory access represents an important
Dieison Silveira, Bruno Zatt, Luciano Agostini, Marcelo Porto   +3 more
openaire   +1 more source

Power-efficient error-resiliency for H.264/AVC Context-Adaptive Variable Length Coding

2012 Design, Automation & Test in Europe Conference & Exhibition (DATE), 2012
Shafique, Muhammad, Zatt, Bruno, Rehman, Semeen, Kriebel, Florian, Henkel, Jörg   +4 more
openaire   +2 more sources