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Motion estimation for video coding problem, a prediction based on the triangle - a small cross algorithm. The algorithm is mainly used in small cross on the static template blocks and blocks of small campaign focused search, the search for large sports block with triangle template. With the classic diamond search algorithm and square - diamond search algorithm comparison, the search speed increased...
This paper proposes a fast inter prediction mode decision method for H.264. Motion compensation residuals of macroblock are used to analyze motion characteristics of each portion, and reduce the candidate inter modes to a small subset. Compared with the exhaustive mode search, the proposed method achieves an average 63% reduction in computation time with negligible degradation in visual quality. Compared...
The mobile robot which accomplishes a work in explored region does not know location information of surroundings. Traditionally, simultaneous localization and mapping(SLAM) algorithms solve the localization and mapping problem in explored regions. Among the several SLAM algorithms, the EKF (Extended Kalman Filter) based SLAM is the scheme most widely used. The EKF is the optimal sensor fusion method...
To deploy highly efficient video coding technologies on different hardware platform, complexity adjustable algorithms are required. One of the significant resource consumers is motion estimation (ME). This paper proposes a complexity adjustable algorithm for ME to remedy this issue. First, we build a mathematic model to indicate that macroblocks (MBs) with intensive motion are worthier of finer searching...
In this paper, we propose a fast mode decision algorithm for intra and inter prediction for H.264/AVC video coding. Here the subband decomposition of the input video is done for the fast mode prediction. To the LL band of the subband decomposition of the video, exhaustive intra prediction is done. To the LH, HL and HH bands selective intra prediction modes are used for the intra prediction. For the...
In this paper, we propose a fast intra-prediction mode selection method for JVT video coding standard H.264. The fast mode decision is based on the quantization parameter and the local edge information obtained by calculating the edge histogram parameters. The inclusion of the DC mode is based on the Residual Complexity factor. The proposed method reduces the computational complexity and time considerably...
Limited feedback in multiple antenna wireless systems is a practical technique to obtain channel state information at the transmitter. When the channel is time-varying with memory, however, selected codeword may become outdated before its use at the transmitter. To overcome this problem, we propose a Grassmannian prediction and predictive coding framework for delayed feedback systems by exploiting...
Video Compression has played an important role in Multimedia data storage and transmission. Video compression techniques remove spatial as well as temporal redundancy using intra-frame and inter-frame coding respectively. A large level of compression can be achieved through inter-frame coding. In this paper, performance of four matching criterion in the temporal coding of video signal, which are Minimum...
Based on neural network, an improvement scheme that iterative matrix replace secondary derivative has been developed by introduced quasi-Newton algorithm. Profile code based on probability has been used and comparison of window width and learning training has been completed. The experiment results indicate that the prediction for secondary structures of protein obtain a very good effect based on neural...
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