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New Intra Luma Prediction Mode in H.264/AVC Using Collocated Weighted Chroma Pixel Value

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Advanced Concepts for Intelligent Vision Systems (ACIVS 2006)

Part of the book series: Lecture Notes in Computer Science ((LNIP,volume 4179))

Abstract

Intra coding in current hybrid video coding method has very important functionality like low delay in decoder, random access and error resilience. Unfortunately coding efficiency of intra frame is very low relative to inter frame coding because of mismatch between current block and its predicted block. In this paper, new intra luma prediction algorithm which improves intra coding efficiency is proposed. The proposed additional intra luma prediction mode uses collocated chroma pixels and weight values to estimate correct spatial pattern of coded block. From neighboring blocks, weight value between chroma and luma values is calculated and then the predicted luma block is obtained by multiplying calculated weight value and collocated upsampled chroma block. The proposed method is effective for complex or non-directional macroblocks and experimental results show that the efficiency of intra coding is increased up to 0.6 dB.

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References

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© 2006 Springer-Verlag Berlin Heidelberg

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Cho, IH., Lee, JH., Lee, WH., Jeong, DS. (2006). New Intra Luma Prediction Mode in H.264/AVC Using Collocated Weighted Chroma Pixel Value. In: Blanc-Talon, J., Philips, W., Popescu, D., Scheunders, P. (eds) Advanced Concepts for Intelligent Vision Systems. ACIVS 2006. Lecture Notes in Computer Science, vol 4179. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11864349_31

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  • DOI: https://doi.org/10.1007/11864349_31

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-44630-9

  • Online ISBN: 978-3-540-44632-3

  • eBook Packages: Computer ScienceComputer Science (R0)

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