PSNR control for GOP-level constant quality in H.264 video coding

Vito, Fabio De; Martin, Juan Carlos De

doi:10.1109/isspit.2005.1577167

Cited by 19 publications

(27 citation statements)

References 9 publications

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“…Reference simulation results were shown in Figs. 3(a)-(c) In [8], ÁQP TAR can be modeled as a linear function of ÁPSNR TAR . ÁQP TAR ¼ 0 when ÁPSNR TAR ¼ 0, so ÁQP TAR ¼ A Â ÁPSNR TAR where A is a model parameter.…”

Section: Control Of Battery Lifetime and Psnr Qualitymentioning

confidence: 99%

Battery lifetime and PSNR quality-scalable video transmission for mobile multimedia systems

Lee

Jang

2015

IEICE Electron. Express

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A battery lifetime and PSNR quality-scalable video transmission is proposed. Video bitstream is intentionally encoded at lowered bitrate, and it is intermittently transmitted to exploit battery recovery effect. Battery lifetime is extended significantly with PSNR quality degradation given by user. Both battery lifetime and PSNR quality are precisely estimated and easily controlled by adjusting encoding bitrate and battery duty ratio. Battery lifetime extension is fully scalable with PSNR quality degradation, and vice versa. Measured battery lifetime was extended up to 31.4 times at the cost of 1.20∼3.89 dB PSNR degradation in H.264 video coding and ZigBee transceiver. Absolute average errors of estimated PSNR degradation and battery lifetime were less than 7.31%.

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Section: Control Of Battery Lifetime and Psnr Qualitymentioning

confidence: 99%

Battery lifetime and PSNR quality-scalable video transmission for mobile multimedia systems

Lee

Jang

2015

IEICE Electron. Express

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“…De Vito et al assigned or adjusted the QP values according to the difference between the average PSNR of previously encoded frames and the target PSNR [12]. If the difference is small, the QP of previous frame is used.…”

Section: S S I M(x Y)mentioning

confidence: 99%

“…If the difference is larger than the threshold, a scene change is detected and we call this scene change frame as the key frame. It should be noted that, although the key frame may need to be encoded as a P-frame, we only use the spatial feature F spatial to calculate β, instead of using the P-frame feature F P shown in Equation (12), because a large number of intra-coded blocks will appear in this frame. After using F spatial to determine the D-Q relation and the frame QP for encoding this frame, we usually encode this frame once again if the resulting quality of this decoded frame is not close to the target value.…”

Section: I I T H E E N C O D I N G P R O C E D U R Ementioning

confidence: 99%

Constant frame quality control for H.264/AVC

Huang

et al. 2013

SIP

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A frame quality control mechanism for H.264/AVC is proposed in this research. The research objective is to ensure that a suitable quantization parameter (QP) can be assigned to each frame so that the target quality of each frame will be achieved. One of the potential application is consistently maintaining frame quality during the encoding process to facilitate video archiving and/or video surveillance. A single-parameter distortion to quantization (D–Q) model is derived by training a large number of frame blocks. The model parameter can be determined from the frame content before the exact encoding process. Given the target quality for a video frame, we can then select an appropriate QP according to the proposed D–Q model. Model refinement and QP adjustment of subsequent frames can be applied by examining the coding results of previous data. Such quality measurements as peak signal to noise ratio (PSNR) and structural similarity (SSIM) can be employed. The experimental results verify the feasibility of the proposed constant quality video coding framework.

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“…In this part, we explain a modified rate control algorithm [6] for the state-of-the-art AVC/H.264 standard video codec (JM 9.3), which can achieve very impressive compression rates. The reference software implements a rate control algorithm, which requires the target rate value and a starting quantization parameter for the first I-frame of the sequence as its input.…”

Section: A Gop-level Constant Bitrate (Cbr) Controlmentioning

confidence: 99%

“…To ensure faster bitrate convergence, in [6], we proposed initial quantization parameter re-computation for each GOP by dynamically updating quantization parameter (QP) vs. bits per pixel (bpp) table, in the duration of encoding. Every time a new I-frame is being coded, the desired bitrate is read and the target bpp indicator is computed according to the frame size and frame rate.…”

Section: A Gop-level Constant Bitrate (Cbr) Controlmentioning

confidence: 99%

An Analysis of Constant Bitrate and Constant PSNR Video Encoding for Wireless Networks

Özçelebi

Vito²,

Tekalp

et al. 2006

2006 IEEE International Conference on Communications

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In wireless networks, transmission of constantquality, high bitrate video is a challenging task due to channel capacity and buffer limitations. Content adaptive rate control, is used as a solution to this problem. Instead of transmitting all of the video content at low quality, the most important content can be transmitted at high quality while still preserving an acceptable quality for the remaining segments. Furthermore, the rate control strategy inside the individual temporal segments plays a key role for the network performance and viewing quality. Although constant quality video encoding inside the temporal segments is preferable for the best viewing experience, it causes more network packet losses due to adverse bitrate fluctuations in the video stream. In cases when the network is too much loaded, it may be better to employ constant bitrate encoding for network friendliness. In this paper, a performance analysis of constant bitrate and constant peak signal-to-noise ratio encoding for content adaptive rate controlled video streaming over wireless networks is presented. Experimental results obtained using AVC/H.264 encoding in a CDMA/HDR multi-user environment with crosslayer optimized scheduling show performance comparisons of CBR and CPSNR encoding. 1

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PSNR control for GOP-level constant quality in H.264 video coding

Cited by 19 publications

References 9 publications

Battery lifetime and PSNR quality-scalable video transmission for mobile multimedia systems

Battery lifetime and PSNR quality-scalable video transmission for mobile multimedia systems

Constant frame quality control for H.264/AVC

An Analysis of Constant Bitrate and Constant PSNR Video Encoding for Wireless Networks

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