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- A New Quadratic Rate Distortion Model for Video Coding and Its Performance Analysis 一种新的视频编码二次率失真模型及其性能分析
- Keywords FGS;rate distortion model;packaging;video buffer;congestion Control;QoS;retransmission;error control; 精细分层编码;率失真模型;打包;视频缓冲区;拥塞控制;服务质量;重发/重收;差错控制;
- rate distortion model 率失真模型
- Then,this paper uses rate distortion theory to model the lossy compression channel,and obtains the method that can get the minimum bit error rate under lossy compression. 在此基础上;应用率失真理论采用高斯信道来模拟有损压缩信道;得到了在有损压缩下使得误码率最低时;选择补偿因子的方法.
- A new linear approach with radial distortion model for camera calibration was designed and realized. 设计并实现了一种考虑径向畸变的逐步线性摄像机标定方法。
- The video coding standard H. 264/AVC uses intra and inter mode decisions to improve rate distortion performance. 视频编码标准H.;264/AVC用帧内和帧间模式预测来提高率失真性能。
- The fiber distortion model was proposed to characterize the fiber misalignment and the fiber content concentration caused by stitching. 采用多层次多尺度模拟的方法得到层合板非均匀的材料性质。
- AVS video standard adopts the Rate Distortion Optimization(RDO) technique to improve the compression performance in the intra prediction. 摘要 AVS视频标准采用率失真优化(RDO)算法来提高帧内预测的压缩性能。
- H.264/AVC provides 17 modes for intra prediction,and the optimal mode is selected by Rate Distortion Optimization (RDO) with high coding complexity. 摘要 H.;264/AVC采用17种预测模式和率失真优化模型来进行帧内模式的选择,复杂度很高。
- A series of non-parametric tests validated the digitized distortion model and indicated that the Paired Comparison Method was superior to the Standard Comparison Method. 专业和非专业人士都认为和谐或“正常”型最具吸引力,其次是“直面”或双颌后缩的男性中国人、“前部发育不足”或上颌后缩的女性中国人。
- For an inter frame without scene change, the INTRA Mode Skipping Algorithm (IMSA) was proposed and applied to Rate Distortion Optimization (RDO) procedure. 对于未发生场景切换的预测帧,采用INTRA模式跳过算法(IMSA),跳过该帧中所有的INTRA模式的决策过程。
- The algorithm incorporates rate distortion optimized mode selection based on the channel condition (forward) with an error tracking technique based on feedback (backward). 结合了考虑信道条件的率失真模式选择(前向)和基于反馈的差错跟踪(后向)两种技术。
- And also evaluates Rate distortion for all coded images by peak-signal-to-noise ratio(PSNR) and a compes applying JPEG2000 and JPEG to the same images by lossless and lossy compression experiment. 通过计算峰值信噪比(PSNR),对编码后的图像进行率失真评价,进行了无损压缩和适当的有损压缩实验,并对JPEG2000标准和JPEG标准的应用效果进行对比。
- The algorithm of the JPEG image compression based on DCT was discussed. Then simulation experiments were done with MATLAB 6.5 and rate distortion curve was drawn with different compression to the same image Lena. 首先介绍了基于离散余弦变换的JPEG图像压缩编码算法;接着用MATLAB6.;5对标准灰度图像进行仿真;并对同一幅Lena图像做不同的压缩;绘制了率失真曲线。
- The experimental results show that N-ARPS is better than ARPS-2 on computational cost while it's average PSNR is the same as that of ARPS-2, and is closer to FS than ARPS-2 on bit rate distortion. 实验结果表明,在搜索代价上N-ARPS比ARPS-2明显好,而平均PSNR基本上与ARPS-2一致,在bit速率失真上较ARPS-2更接近FS,总的来说,性能较好。
- Rate distortion optimization technique plays an important role in video coding, which is widely used in many video coding modules, such as macroblock mode decision, quantization optimization, etc. 摘要率失真优化技术在视频优化编码中起着重要的作用,广泛地应用于宏块模式决策,优化量化等编码模块中。
- Abstract: The H. 264 video coding standard uses rate distortion optimization (RDO) to select the best coding mode for every macroblock, which greatly improves the coding efficiency and quality. 文章摘要: H.264编码标准采用了率失真优化的方法,对各宏块的编码模式逐一进行优化选择,大幅度提高了编码效率和编码质量,但同时也带来了很高的运算复杂度。
- At this rate we won't be able to afford a holiday. 照这样下去,我们不会有时间/钱去度假的。
- By the calculating of the distorted models and the undistorted model of the circumfluence, the effect of the distortion ration on the flow is analyzed. 采用平面二维模型,在数学模型的基础上,计算变率使河工模型弯道水流在相似性上产生的影响。
- Rate distortion optimization technique takes an important role in video coding, which is widely used in many video coding modules, such as macroblock mode decision, quantization optimization, etc. 率失真优化技术在视频优化编码中起着重要的作用,广泛地应用于宏块模式决策,优化量化等编码模块中。