An Efficient Implementation of H.264/AVC Integer Motion Estimation Algorithm on Coarse-grained Reconfigurable Computing System

Nguyen, KiemHung; Cao, Peng; Wang, Xue-Xiang

doi:10.4304/jcp.8.3.594-604

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…He applied global motion search algorithm to avoid loss of image quality and parallel computing capacity of graphics processors to accelerate the encoding process. Nguyen [5] optimized motion estimation with hardware accelerator. He proposed a coarse-grained dynamically reconfigurable computing system to develop the real-time speed.…”

Section: Introductionmentioning

confidence: 99%

A Fast Motion Estimation Algorithm Based on Motion Vector Distribution Prediction

Gao¹,

Liu²,

Jia³

2013

JSW

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the main factor that impacts the implementation and application of the latest video coding standard H.264/AVC is the rapid decline encoding speed which is caused by the cost of increased computational complexity. Reducing time-consuming of motion estimation is the key to improve encoding efficiency. In this paper, according to UMHexagonS algorithm, a method of motion vector distribution prediction is proposed and combines with designed patterns to achieve adaptive sub-regional searching. Simulation results show that the proposed motion estimation scheme achieves reducing 21.40% motion estimation encoding time with a good rate-distortion performance compared with UMHexagonS algorithm in JM18.4. The proposed algorithm improves the performance of real-time encoding.

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Section: Introductionmentioning

confidence: 99%

A Fast Motion Estimation Algorithm Based on Motion Vector Distribution Prediction

Gao¹,

Liu²,

Jia³

2013

JSW

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“…Each partition in an inter-coded macroblock is predicted from an area of the same size in a reference picture. For each part of the frame, encoder chooses the best partition size, and for each partition performs motion estimation and motion compensation [8]. There are some watermarking algorithms based on motion vectors (MV) [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Watermarking in H.264/AVC Compressed Domain Using CAVLC

Wang

2013

JCP

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A new real-time watermarking technique based on H.264/AVC video standard is proposed. The algorithm works in the compressed domain by embedding watermark bits into quantized DCT coefficients of 4×4 blocks of the I-frame during the Context-based Adaptive Variable Length Coding (CAVLC) process. CAVLC offers a lower computational complexity which is efficient to the algorithm. During watermark extraction, the entire video do not need to be decoded,which meets the requirement of the real-time processing.The scheme yields tiny bit-rate change after watermarking and the degradation of video quality is negligible. The simulation results show that watermark embedded is fragile and is easily distorted under attacks, which can be used for the video authentication or covert communication applications.

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