H.264/AVC intra-only coding (iAVC) techniques for video over wireless networks

Trifas, Monica; Xiong, Guolun; Rogers, Joshua

doi:10.1117/12.811423

Cited by 4 publications

(5 citation statements)

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“…(11) to (15) (also graphically represented in Fig. (11) to (15) (also graphically represented in Fig.…”

Section: Fast Intra Prediction Mode Decisionmentioning

confidence: 99%

“…14 This configuration avoids the high cost of the motion estimation process required for interframe encoding, simplifying the codec and improving its error resilience, 15 both desirable goals in some video surveillance setups, portable studio-quality cameras, and digital cinema distribution networks. This means that the encoded frames are completely selfcontained and no temporal reference frames are used.…”

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confidence: 99%

“…This means that the encoded frames are completely selfcontained and no temporal reference frames are used. 15 This configuration is also of interest in low-complexity devices, like wireless video cameras, mobile phones, and personal digital assistants (PDAs), which usually have less processing power available or limited power supplies. 16,17 Intra-only coding is also a good choice for studio-quality video representation, enabling quick and simple editing without the loss of quality that occurs when editing interframe encoded video.…”

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confidence: 99%

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Inter-view prediction of intra mode decision forhigh-efficiency video coding-based multiviewvideo coding

Silva

Agostini

Cruz

2014

J. Electron. Imaging

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Downloaded From: http://electronicimaging.spiedigitallibrary.org/ on 05/14/2015 Terms of Use: http://spiedl.org/termsAbstract. Intra prediction is a very important tool in current video coding standards. High-efficiency video coding (HEVC) intra prediction presents relevant gains in encoding efficiency when compared to previous standards, but with a very important increase in the computational complexity since 33 directional angular modes must be evaluated. Motivated by this high complexity, this article presents a complexity reduction algorithm developed to reduce the HEVC intra mode decision complexity targeting multiview videos. The proposed algorithm presents an efficient fast intra prediction compliant with singleview and multiview video encoding. This fast solution defines a reduced subset of intra directions according to the video texture and it exploits the relationship between prediction units (PUs) of neighbor depth levels of the coding tree. This fast intra coding procedure is used to develop an inter-view prediction method, which exploits the relationship between the intra mode directions of adjacent views to further accelerate the intra prediction process in multiview video encoding applications. When compared to HEVC simulcast, our method achieves a complexity reduction of up to 47.77%, at the cost of an average BD-PSNR loss of 0.08 dB.

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“…(11) to (15) (also graphically represented in Fig. (11) to (15) (also graphically represented in Fig.…”

Section: Fast Intra Prediction Mode Decisionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Inter-view prediction of intra mode decision forhigh-efficiency video coding-based multiviewvideo coding

Silva

Agostini

Cruz

2014

J. Electron. Imaging

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“…Low-complexity video compression is often achieved solely relying on intra-frame prediction, which is known as intraonly coding. Intra-only coding avoids the usage of the motion estimation technique during encoding, which simplifies the codec and makes it more robust against errors [5], [6]. Even the "zero-motion-vector" case, where motion estimation is avoided by assuming a no-motion vector, is often avoided in many applications for complexity reasons [7].…”

Section: Introductionmentioning

confidence: 99%

“…Even the "zero-motion-vector" case, where motion estimation is avoided by assuming a no-motion vector, is often avoided in many applications for complexity reasons [7]. Intra-only coding is also used in digital cinema and in surveillance systems [5], [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Inter-Frame Post-Processing for Intra-Coded Video

Hung¹,

Queiroz²,

Mukherjee³

2013

Journal of Communication and Information Systems

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We propose a video codec architecture based on mixed quality frames which allows for low-complexity intracoded video to undergo inter-frame post-processing to improve its rate-distortion performance. The video sequence is divided into key and non-key frames by applying different quantization parameters among them. The application of different quantization parameters reduces the bit-rate, but also reduces the quality of the non-key frames. In order to enhance the quality of these non-key frames at the decoding process without additional information, we propose the use of the higher quality (key) frames through motion estimation. For that, in blocks where key and non-key frames "match", we try to apply details of key frames to non-key ones. Tests were carried with H.264-Intra, Motion JPEG 2000 and Motion JPEG video sequences, recording PSNR improvements of up to 1 dB. Index Terms-Video compression, video post-processing, example-based super-resolution, intra-coding of video.Edson Mintsu Hung received the Eng., M.Sc. and D.Sc. degrees from the

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