A New Motion Compensation Design for H.264/AVC Decoder

Wang, Sheng-Zen; Lin, Tsung-Nan; Liu, Tsu-Ming; Lee, Chen‐Yi

doi:10.1109/iscas.2005.1465646

Cited by 49 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inter Compensation (Motion Compensation) is used in a decoding path to generate the inter-frame motion predicted (estimated) pixels by using motion vectors, reference index and reference pixel from inter prediction. inter compensation also allows variable block size, multiple reference frames and quarter-pixel accurate motion vector (Wang, 2005) The main function of quantization is to reduce the transformed coefficients and the encoding information. Because the human eye is less sensitive to high-frequency image components, some video and image compression standards may use higher scaling values (quantization parameters) for high-frequency data.…”

Section: Compensationmentioning

confidence: 99%

Comparison of H.264 and H.265

Jayaratne¹,

Gunawardhana²,

Samarathunga³

2022

Preprint

View full text Add to dashboard Cite

From the Stone Age to the present day, visual communication can be described as a form of communication that has evolved over various topics, from design to technology. As a result of globalization and the transformation of digital citizenship, services such as the Internet have come into the world. With the advent of mobile phones, computers, and television, more and more people are viewing and sharing videos, the need for a lower cost and higher quality methodology. The H.264 standard was successfully introduced in 2003 as another answer to that problem. The H.264 standard, which supported 1920 x 1080 Full HD resolutions, was no longer more practical than 4K resolutions. A decade later, with the introduction of the H265 in 2013, video usage became even more efficient. This was introduced with the combination of MPEG and ITU-T. H.265 codex mostly targets higher resolution video, such as 4k and 8k. Thru this paper, we are looking into the comparison of the technology used in H.264 and H.265. Specially H.264 and H.265 workflow, Transformation and Quantization techniques used, coding Units, Entropy Coding methods, etc. The quality of the output video is expected to be well preserved to the point where the frame concealment algorithm proposed leaves a very little negative impact on the video

show abstract

Section: Compensationmentioning

confidence: 99%

Comparison of H.264 and H.265

Jayaratne¹,

Gunawardhana²,

Samarathunga³

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…There are various architectures of MC decoding proposed in literatures [5][6][7][8]. Reference [5] focused on the interpolation hardware design of both AVS and H.264, but it did not cover other components of the whole MC subsystem.…”

Section: Introductionmentioning

confidence: 99%

“…Reference [5] focused on the interpolation hardware design of both AVS and H.264, but it did not cover other components of the whole MC subsystem. Reference [6] proposed a whole design for MC sub-system in H.264 and it could not support the latest AVS standard. Reference [7] provided three strategies to save the memory bandwidth and adopted 2D filters to increase the system throughput, but the potential optimizing spaces can still be found.…”

Section: Introductionmentioning

confidence: 99%

A novel VLSI architecture of motion compensation for multiple standards

Zheng

Gao

Wu³

et al. 2008

IEEE Trans. Consumer Electron.

View full text Add to dashboard Cite

Motion compensation (MC) is one of the most important technologies capable of removing the temporal redundancy and widely adopted by the main video standards. From the older MPEG-2 to the latest H.264 and the Chinese AVS, many efficient coding tools have been introduced into MC, such as new motion vector prediction, bi-directional matching, quarter precision interpolation, etc. However, these new features enormously increase the computational complexity and the memory bandwidth consumption. In this paper, we introduce a novel architecture design of Motion compensation (MC) for multiple video standards including MPEG-2, H.264, and AVS. The proposed design has a macroblocklevel pipelined structure which consists of MV Predictor, Cachebased Fetch, and Pixel Interpolation unit. The proposed architecture exploits the parallelism in MC algorithm to accelerate the processing speed and uses the dedicated design to optimize the memory access. MV Predictor unit can cover all MV prediction algorithms for the three standards and provide a simple error concealment scheme. Cache-based Fetch unit can save 25% memory bandwidth of MC in average and doesn't impact the performance in the worst case. Pixel Interpolation unit adopts fully separate 1-D filtering structure which is designed to effectively avoid the redundant calculations. The architecture can achieve the real-time multiple-standard decoding for HDTV 1080i (1920×1088 4:2:0 60field/s) video. The efficient design can work at the frequency of 148.5MHz and the total gate count for logic circuit s is about 56K. 1

show abstract