Adaptive Video Coding Scheme Based on Spatial Resolution Regulation on Low Bit-Rate

Song, Haohao; Qiu, Zihua; Gu, Jun

doi:10.1109/icoip.2010.194

2010 International Conference on Optoelectronics and Image Processing 2010

DOI: 10.1109/icoip.2010.194

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Adaptive Video Coding Scheme Based on Spatial Resolution Regulation on Low Bit-Rate

Haohao Song

Zihua Qiu

Jun Gu

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2013

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“…But, the replacement of an I-frame with a P-frame leads to more quantization error (GOP length increment due to progressive nature of the quantization error) [8]. In [9], low resolution version of a video sequence is coded for the lowest available BW, and the difference sequence (of the original sequence and the up-sampled low-resolution version) is coded as the available BW exceeds the threshold value. It is assumed that down sampling of frames leads to less distortion compared with QP adjustment schemes.…”

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Motion adaptive video coding scheme for time‐varying network

Bhuyan

Chakraborty

2013

Int J Communication

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SUMMARYAdaptive video coding algorithms can encode a video stream dynamically on the basis of the amount of bandwidth available in a network. In this paper, a novel approach for adaptive video coding based on look-up tables has been proposed. On the basis of the network conditions, the proposed codec estimates quantization parameter (QP) and also the spatial resolution for a group of pictures from the look-up table. Then, QP for each frame is estimated on the basis of the motion content in each frame. More motion leads to more burden of bits while encoding the motion vectors. Also, quantization noise is less prominent in high-motioned frames than frames possessing low motion information because of the temporal masking phenomenon of the human eyes. So, the main trick of the proposed scheme is to assign higher QP to the frames having higher motion than those having less motion. This method also reduces the requirement of excess bits for encoding of motion vectors having higher motion content. Additionally, QP is adjusted on the basis of the buffer availability in order to avoid bit loss error. Experimental results show the efficacy of the proposed codec.

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confidence: 99%

Motion adaptive video coding scheme for time‐varying network

Bhuyan

Chakraborty

2013

Int J Communication

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Adaptive Video Coding Scheme Based on Spatial Resolution Regulation on Low Bit-Rate

Cited by 1 publication

References 3 publications

Motion adaptive video coding scheme for time‐varying network

Motion adaptive video coding scheme for time‐varying network

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