Adaptive Video Encoder Control
    93.
    发明申请
    Adaptive Video Encoder Control 失效
    自适应视频编码器控制

    公开(公告)号:US20110170591A1

    公开(公告)日:2011-07-14

    申请号:US13063768

    申请日:2009-09-16

    IPC分类号: H04N7/12

    摘要: A value of one or more Lagrangian multipliers is adaptively estimate and update based, at least in part, on the video source statistics or dynamic programming. Methods, techniques, and systems involve determining a first Lagrangian multiplier with a video encoder, and updating a second Lagrangian multiplier with the first Lagrangian multiplier. The system can include a Lagrangian multiplier Estimation Module that estimates the Lagrangian multiplier, and a multiplier Update Module that updates the current Lagrangian multiplier using the estimated Lagrangian multiplier. The Online Lagrangian Multiplier Estimation Module may function with Rate Distortion Slope Estimation with Rate Distortion Optimized Mode Decision; Rate Distortion Slope Estimation with Local Approximation; Rate Distortion Slope Estimation with Local Information; or Rate Distortion Slope Estimation with Global Information. The Lagrangian Multiplier Update Module may function with Direct Update; Step Size Update; Sliding Window Update; or Periodical Update.

    摘要翻译: 一个或多个拉格朗日乘数的值至少部分地基于视频源统计或动态规划自适应地估计和更新。 方法,技术和系统涉及用视频编码器确定第一拉格朗日乘数,并用第一拉格朗日乘数更新第二拉格朗日乘数。 该系统可以包括拉格朗日乘数估计模块,其估计拉格朗日乘数,乘数更新模块使用估计的拉格朗日乘数来更新当前的拉格朗日乘数。 在线拉格朗日乘数估计模块可以利用速率失真优化模式决策的速率失真斜率估计功能; 利用局部逼近估计失真坡度估计; 利用本地信息估价失真坡度估计; 或使用全局信息对失真斜率进行估计。 拉格朗日乘数更新模块可以直接更新; 步长更新; 滑动窗口更新; 或定期更新。

    ADAPTIVE MOTION INFORMAITON COST ESTIMATION WITH DYNAMIC LOOK-UP TABLE UPDATING
    94.
    发明申请
    ADAPTIVE MOTION INFORMAITON COST ESTIMATION WITH DYNAMIC LOOK-UP TABLE UPDATING 有权
    自适应运动信息成本估计与动态查看表更新

    公开(公告)号:US20100316118A1

    公开(公告)日:2010-12-16

    申请号:US12863923

    申请日:2009-01-21

    IPC分类号: H04N7/26 H04N7/50

    摘要: Adaptive motion information cost estimation is achieved in processing video information. A transmission cost is estimated that is associated with encoding a motion vector difference (mvd) in motion vectors that describe a motion characteristic of the video information. The mvd is encoded based on minimizing a rate estimation mismatch associated with the motion vectors. The encoding step includes computing a bit count associated with the mvd using CABAC. A value is indexed that corresponds to the cost from one or more entries in the lookup table. The cost relates to context or content characteristics associated with the video information. The lookup table is adaptively updated based on a change in the contextual information or content characteristics. The value is dynamically adjustable based on the change.

    摘要翻译: 在处理视频信息时实现自适应运动信息成本估计。 估计与描述视频信息的运动特性的运动矢量中的运动矢量差(mvd)编码有关的传输成本。 基于最小化与运动矢量相关联的速率估计失配来编码mvd。 编码步骤包括使用CABAC计算与mvd相关联的位计数。 索引值对应于查找表中的一个或多个条目的成本。 成本涉及与视频信息相关联的上下文或内容特征。 基于上下文信息或内容特征的变化来自适应地更新查找表。 该值可根据变化动态调整。

    Method And Apparatus For Complexity Scalable Video Decoder
    96.
    发明申请
    Method And Apparatus For Complexity Scalable Video Decoder 有权
    复杂度可视化解码器的方法和装置

    公开(公告)号:US20070211798A1

    公开(公告)日:2007-09-13

    申请号:US10593915

    申请日:2005-03-31

    IPC分类号: H04N11/02 H04N7/12

    摘要: A video decoder, a video decoding method, a video encoder and a video encoding method are disclosed. A video decoder for decoding a video bitstream for an image block includes a motion vector resolution reducer and a motion compensator. The motion vector resolution reducer is for receiving decoded high resolution motion vectors included in the video bitstream and for reducing an accuracy of the high resolution motion vectors to correspond to a low resolution. The motion compensator, in signal communication with the motion vector resolution reducer, is for forming a motion compensated high resolution prediction using the reduced accuracy motion vectors. The video encoder for encoding scalable video comprises a motion compensator for forming a motion compensated full resolution prediction and combining the motion compensated full resolution prediction from an image block to form a prediction residual. The prediction residual is downsampled to form a low resolution downsampled prediction residual and then coded.

    摘要翻译: 公开了视频解码器,视频解码方法,视频编码器和视频编码方法。 用于解码用于图像块的视频位流的视频解码器包括运动矢量分辨率降低器和运动补偿器。 运动矢量分辨率降低器用于接收包括在视频比特流中的解码的高分辨率运动矢量,并且用于降低高分辨率运动矢量的精度以对应于低分辨率。 与运动矢量分辨率降低器进行信号通信的运动补偿器用于使用精度较低的运动矢量形成运动补偿的高分辨率预测。 用于编码可伸缩视频的视频编码器包括运动补偿器,用于形成运动补偿全分辨率预测,并组合来自图像块的运动补偿全分辨率预测以形成预测残差。 预测残差被下采样以形成低分辨率下采样预测残差,然后被编码。

    Device and method for fast sub sample block-matching motion estimation in video encoders
    98.
    发明申请
    Device and method for fast sub sample block-matching motion estimation in video encoders 有权
    视频编码器中快速子采样块匹配运动估计的装置和方法

    公开(公告)号:US20070127577A1

    公开(公告)日:2007-06-07

    申请号:US11598976

    申请日:2006-11-14

    IPC分类号: H04N11/02 H04N11/04

    摘要: Motion Estimation is one of the most computationally complex processes within a video encoding system. Several Fast Integer Sample Motion Estimation schemes are introduced to reduce complexity of considering integer positions during motion estimation. However, after making such considerations fractional sample motion vector refinement becomes instead the greatest bottleneck for video encoding. Accordingly, algorithms that can reduce such complexity, with little impact in quality, are required and are also disclosed herein.

    摘要翻译: 运动估计是视频编码系统中计算量最大的过程之一。 引入几个快速整数采样运动估计方案,以降低在运动估计过程中考虑整数位置的复杂性。 然而,在做出这样的考虑之后,分数样本运动矢量细化成为视频编码的最大瓶颈。 因此,需要能够降低这种复杂性,质量影响很小的算法,并且也在此公开。