PRESERVING TEXT QUALITY IN VIDEO ENCODING
    21.
    发明申请
    PRESERVING TEXT QUALITY IN VIDEO ENCODING 有权
    保存视频编码中的文本质量

    公开(公告)号:US20100316119A1

    公开(公告)日:2010-12-16

    申请号:US12777433

    申请日:2010-05-11

    IPC分类号: H04N7/26

    摘要: A video encoder receives a macro-block of an image frame, and determines whether the macro-block contains text. The video encoder computes a quantization parameter for quantizing the macro-block, with the quantization parameter computed to be smaller if the macro-block is determined to contain text. The video encoder encodes the macro-block using the quantization parameter. Text quality in the encoded macro-block is preserved.

    摘要翻译: 视频编码器接收图像帧的宏块,并且确定宏块是否包含文本。 视频编码器计算用于量化宏块的量化参数,如果宏块被确定为包含文本,则计算的量化参数更小。 视频编码器使用量化参数对宏块进行编码。 编码宏块中的文本质量得以保留。

    REDUCING COMPUTATIONAL COMPLEXITY WHEN VIDEO ENCODING USES BI-PREDICTIVELY ENCODED FRAMES
    22.
    发明申请
    REDUCING COMPUTATIONAL COMPLEXITY WHEN VIDEO ENCODING USES BI-PREDICTIVELY ENCODED FRAMES 有权
    视频编码使用双重预编码框架降低计算复杂度

    公开(公告)号:US20100284464A1

    公开(公告)日:2010-11-11

    申请号:US12773145

    申请日:2010-05-04

    IPC分类号: H04N7/26 H04N7/32

    摘要: Several techniques aimed at reducing computational complexity when encoding uses bi-predictively encoded frames (B-frames) are implemented in a video encoder. In an embodiment, B-frames are not used as reference frames for encoding P-frames and other B-frames. Non-use of B-frames allows a de-blocking filter used in the video encoder to be switched off when reconstructing encoded B-frames, and use of a lower complexity filter for fractional-resolution motion search for B-frames. In another embodiment, cost functions used in motion estimation for B-frames are simplified to reduce computational complexity. In one more embodiment, fractional pixel refinement in motion search for B-frames is simplified. In yet another embodiment, predictors used in motion estimation for a macro-block in a P-frame are selected from a B-frame that uses a same reference frame as the P-frame.

    摘要翻译: 在编码中使用双预测编码帧(B帧)的目的在于减少计算复杂度的若干技术在视频编码器中实现。 在一个实施例中,B帧不用作用于对P帧和其他B帧进行编码的参考帧。 不使用B帧允许在重构编码的B帧时使视频编码器中使用的解块滤波器被关闭,并且使用较低复杂度的滤波器用于B帧的分数分辨率运动搜索。 在另一个实施例中,简化了用于B帧运动估计的成本函数,以减少计算复杂度。 在另一个实施例中,简化了用于B帧的运动搜索中的分数像素细化。 在另一个实施例中,从使用与P帧相同的参考帧的B帧中选择用于P帧中的宏块的运动估计中的预测器。

    DETERMINATION OF A FIELD REFERENCING PATTERN
    23.
    发明申请
    DETERMINATION OF A FIELD REFERENCING PATTERN 有权
    现场参考模式的确定

    公开(公告)号:US20100002944A1

    公开(公告)日:2010-01-07

    申请号:US12465673

    申请日:2009-05-14

    IPC分类号: H04N7/26 G06K9/36

    摘要: Several methods and a system to perform determination of a field referencing pattern are disclosed. In one aspect, a method is disclosed. A motion vector of a previously coded frame is analyzed using a processor and a memory. A statistic is updated based on whether the motion vector includes one or more of a fractional pel vertical component, a half pel vertical component, and an integer pel vertical component. A field referencing pattern of a target field is determined based on the statistic and an exception protocol.

    摘要翻译: 公开了几种方法和执行场参考模式确定的系统。 一方面,公开了一种方法。 使用处理器和存储器来分析先前编码的帧的运动矢量。 基于运动矢量是否包括分数像素垂直分量,半像素垂直分量和整数像素垂直分量中的一个或多个来更新统计量。 基于统计量和异常协议来确定目标字段的字段引用模式。

    Statistically Cycle Optimized Bounding Box for High Definition Video Decoding
    24.
    发明申请
    Statistically Cycle Optimized Bounding Box for High Definition Video Decoding 有权
    用于高清晰度视频解码的统计周期优化边界框

    公开(公告)号:US20070176938A1

    公开(公告)日:2007-08-02

    申请号:US11566295

    申请日:2006-12-04

    申请人: Soyeb Nagori

    发明人: Soyeb Nagori

    IPC分类号: G06F12/02

    摘要: A method for conserving memory accesses in motion compensation of compressed video gathers a plurality of motion compensation data accesses into a single bounding box for direct memory access data transfer. The method places the motion compensation data of a current macroblock into a current bounding box until placing the motion compensation data into the current bounding box causes the ratio of motion compensation data to bounding box data to fall below a predetermined memory utilization threshold.

    摘要翻译: 用于节省压缩视频的运动补偿中的存储器访问的方法将多个运动补偿数据访问收集到用于直接存储器访问数据传输的单个边界框中。 该方法将当前宏块的运动补偿数据放置到当前边界框中,直到将运动补偿数据放置到当前边界框中,导致运动补偿数据与边界框数据的比率低于预定的存储器利用阈值。

    Decoding Variable Length Codes While Using Optimal Resources
    25.
    发明申请
    Decoding Variable Length Codes While Using Optimal Resources 有权
    使用最佳资源解码可变长度代码

    公开(公告)号:US20070024473A1

    公开(公告)日:2007-02-01

    申请号:US11467581

    申请日:2006-08-28

    申请人: Soyeb Nagori

    发明人: Soyeb Nagori

    IPC分类号: H03M7/00

    CPC分类号: H03M7/40 H03M7/42

    摘要: In one aspect, code-words of variable lengths are decoded using a multi-stage decoding approach, with different stages being of different sizes (and thus accepting input data of corresponding number of bits). According to another aspect, the same bit positions are used for storing symbol information and offset value in case of hit and miss results respectively, thereby reducing the width of the entries of the decoding table. According to yet another aspect, conditional processing is avoided by providing a common arithmetic operation when decoding code-words in various escape modes, but using neutral operand values in case the operation is not required.

    摘要翻译: 在一个方面,使用多级解码方法对可变长度的码字进行解码,其中不同的级具有不同的大小(并且因此接受相应位数的输入数据)。 根据另一方面,分别在命中和未命中结果的情况下,相同比特位置用于存储符号信息和偏移值,从而减小解码表的条目的宽度。 根据另一方面,通过在对各种逃避模式中的码字进行解码时提供公共算术运算来避免条件处理,但是在不需要操作的情况下使用中性操作数值。

    Intra/inter mode decision for predictive frame encoding
    27.
    发明授权
    Intra/inter mode decision for predictive frame encoding 有权
    用于预测帧编码的帧内/帧间模式决定

    公开(公告)号:US09560350B2

    公开(公告)日:2017-01-31

    申请号:US12751211

    申请日:2010-03-31

    摘要: This invention predicts that intra mode prediction is more effective for the macro blocks where motion estimation in inter mode prediction fails. This failure is indicated by a large value of the inter mode SAD. This invention performs intra mode prediction for only macro blocks have larger inter mode SADs. The definition of a large inter mode SAD differs for different content. This invention compares the inter mode SAD of a current macroblock with an adaptive threshold. This adaptive threshold depends on the average and variance of the SADs of the previous predicted frame. An adaptive threshold is calculated for each new predictive frame.

    摘要翻译: 本发明预测帧模式预测对于帧间模式预测中的运动估计失败的宏块更有效。 该故障由间隔模式SAD的大值指示。 本发明仅对具有较大的帧间模式SAD的宏块执行帧内模式预测。 大型inter模式SAD的定义因不同内容而异。 本发明将当前宏块的帧间模式SAD与自适应阈值进行比较。 该自适应阈值取决于先前预测帧的SAD的平均值和方差。 为每个新的预测帧计算自适应阈值。

    METHODS AND SYSTEMS FOR ESTIMATING MOTION IN MULTIMEDIA PICTURES
    28.
    发明申请
    METHODS AND SYSTEMS FOR ESTIMATING MOTION IN MULTIMEDIA PICTURES 有权
    在多媒体图像中估计运动的方法和系统

    公开(公告)号:US20120263227A1

    公开(公告)日:2012-10-18

    申请号:US13442908

    申请日:2012-04-10

    IPC分类号: H04N7/36 H04N7/26

    摘要: Several methods and systems for estimating motion in a plurality of multimedia pictures are disclosed. In an embodiment, at least one temporal distance between a multimedia picture and one or more reference pictures corresponding to the multimedia picture in a capture order associated with the plurality of multimedia pictures is computed. The at least one temporal distance is computed subsequent to an encoding of the multimedia picture. At least one motion estimation parameter is determined based on the at least one temporal distance. Motion associated with a subsequent multimedia picture to be encoded is estimated based on the at least one motion estimation parameter.

    摘要翻译: 公开了用于估计多个多媒体图像中的运动的几种方法和系统。 在一个实施例中,计算多媒体图片与对应于与多个多媒体图片相关联的捕获顺序中的多媒体图片的一个或多个参考图片之间的至少一个时间距离。 在多媒体图像的编码之后计算至少一个时间距离。 基于至少一个时间距离来确定至少一个运动估计参数。 基于至少一个运动估计参数来估计与待编码的后续多媒体图像相关联的运动。

    Reduced calculations in determining intra-prediction type method and system
    29.
    发明授权
    Reduced calculations in determining intra-prediction type method and system 有权
    确定帧内预测类型方法和系统的减少计算

    公开(公告)号:US08270727B2

    公开(公告)日:2012-09-18

    申请号:US13222384

    申请日:2011-08-31

    申请人: Soyeb Nagori

    发明人: Soyeb Nagori

    IPC分类号: G06K9/48

    摘要: The method, system, and apparatus of source statistics based intra prediction type is disclosed. In one embodiment, a method includes classifying a four-pixel square block in an edge class (e.g., may include a DC edge class, a vertical edge class, a horizontal edge class, a diagonal edge class, and/or a planar edge class) based on an edge classifier, classifying an eight-pixel square block having the four-pixel square block and other four-pixel square blocks as a homogenous class if the four-pixel square block and the other four-pixel square blocks of the eight-pixel square block belong to the edge class, assigning a direction to the edge class of the eight-pixel square block, and determining an optimal intra-prediction type through the classification such that empirical testing of all possible ones of the edge class and the direction is avoided when the homogenous class is identified.

    摘要翻译: 公开了基于源统计的帧内预测类型的方法,系统和装置。 在一个实施例中,一种方法包括对边缘类中的四像素平方块进行分类(例如,可以包括DC边缘类,垂直边缘类,水平边缘类,对角边缘类和/或平面边缘类 )基于边缘分类器,如果八像素的四像素方块和四像素平方块的四像素平方块和四像素平方块的四像素平方块 像素平方块属于边缘类,向八像素平方块的边缘类分配方向,并且通过分类确定最佳帧内预测类型,使得对边缘类和所有边缘类的所有可能的经验检验 当确定同质类时,避免了方向。

    Rate Control in Video Coding
    30.
    发明申请
    Rate Control in Video Coding 审中-公开
    视频编码中的速率控制

    公开(公告)号:US20110255594A1

    公开(公告)日:2011-10-20

    申请号:US13084572

    申请日:2011-04-12

    IPC分类号: H04N7/26

    摘要: A method of rate control in coding of a video sequence to generate a compressed bit stream is provided that includes computing a sequence base quantization step size for a sequence of pictures in the video sequence, computing a picture base quantization step size for a picture in the sequence of pictures based on the sequence base quantization step size, a type of the picture, and a level of the picture in a rate control hierarchy, and coding the picture using the picture base quantization step size to generate a portion of the compressed bit stream.

    摘要翻译: 提供了一种用于编码视频序列以产生压缩比特流的速率控制的方法,包括:计算视频序列中的一系列图像的序列基本量化步长,计算图像中的图像的图像基本量化步长 基于序列基本量化步长,图像类型和速率控制层级中的图像的级别的图像序列,以及使用图像基本量化步长对图像进行编码,以生成压缩比特流的一部分 。