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Fast Intra Mode Decision Algorithm for H264/AVC HD Baseline Profile Encoder

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International Journal of Computer Applications
© 2012 by IJCA Journal
Volume 37 - Number 6
Year of Publication: 2012
Authors:
Nejmeddine Bahri
Imen Werda
Amine Samet
Mohamed Ali Ben Ayed
Nouri Masmoudi
10.5120/4610-6601

Nejmeddine Bahri, Imen Werda, Amine Samet, Mohamed Ali Ben Ayed and Nouri Masmoudi. Article: Fast Intra Mode Decision Algorithm for H264/AVC HD Baseline Profile Encoder. International Journal of Computer Applications 37(6):8-13, January 2012. Full text available. BibTeX

@article{key:article,
	author = {Nejmeddine Bahri and Imen Werda and Amine Samet and Mohamed Ali Ben Ayed and Nouri Masmoudi},
	title = {Article: Fast Intra Mode Decision Algorithm for H264/AVC HD Baseline Profile Encoder},
	journal = {International Journal of Computer Applications},
	year = {2012},
	volume = {37},
	number = {6},
	pages = {8-13},
	month = {January},
	note = {Full text available}
}

Abstract

The high performance of H.264/AVC video encoder is accompanied with a wide computation complexity especially for high definition (HD) video sequences. One of the major H.264/AVC features to be optimized is the mode decision for both inter and intra prediction. Thus, based on high correlation observed between selected inter prediction mode and intra mode decision, a fast intra mode decision algorithm based on the best inter prediction mode for H264 high definition (HD) baseline profile encoder is proposed. The evaluation of the proposed approach was based on the rate distortion and PSNR variation, execution time and percentage of skipping intra4x4 and intra16x16. The proposed scheme is performed on 720p (1280x720) and 1080p (1920x1088) HD video sequences. Experimental results show that the proposed algorithm can save up to 60% of intra prediction computation time, 16% of skipping intra16x16 and up to 83% for intra4x4 without inducing PSNR degradation and bit-rate increase.

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