Fast and efficient method for block edge classification
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Efficient intra-prediction mode selection for 4/spl times/4 blocks in H.264
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 3 (ICME '03) - Volume 03
A new rate control scheme using quadratic rate distortion model
IEEE Transactions on Circuits and Systems for Video Technology
Optimum bit allocation and accurate rate control for video coding via ρ-domain source modeling
IEEE Transactions on Circuits and Systems for Video Technology
A linear source model and a unified rate control algorithm for DCT video coding
IEEE Transactions on Circuits and Systems for Video Technology
Fast mode decision algorithm for intraprediction in H.264/AVC video coding
IEEE Transactions on Circuits and Systems for Video Technology
Efficient rate-distortion estimation for H.264/AVC coders
IEEE Transactions on Circuits and Systems for Video Technology
Mode dependent loop filter for intra prediction coding in H.264/AVC
Journal of Visual Communication and Image Representation
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The H.264/AVC is the newest video coding standard recommended by ITU-T and MPEG. Compared with all existing video coding standards, H.264 can achieve superior performance by using many advanced techniques. Intra mode selection is an important feature in H.264 standard and can reduce the spatial redundancy in intra-frame significantly. An efficient rate distortion optimization (RDO) technique is employed in H.264 to choose the best mode for each MB, but the computational cost increases drastically. In this paper, a fast intra-mode selection algorithm is introduced. By using a fast edge detection method which is based on non-normalized Haar transform (NHT), edge for each sub-block can be extracted. Based on the local edge information, only few intra-modes are chosen as mode candidates. A fast RDO algorithm is also proposed in this paper which is based on accurate rate-distortion estimation model and the fast intra-mode RDO method. By combining these two methods, computational load is reduced remarkably. Experimental results show that this fast intra-mode selection scheme can lessen the encoding time significantly with little loss of bit-rate and visual quality.