公开(公告)号：US09161042B2

公开(公告)日：2015-10-13

申请号：US12528879

申请日：2008-03-05

申请人： Atsushi Shimizu ,  Ryuichi Tanida

发明人： Atsushi Shimizu ,  Ryuichi Tanida

IPC分类号： H04N7/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/172 ,  H04N19/61 ,  H04N19/136 ,  H04N19/142 ,  H04N19/152 ,  H04N19/177 ,  H04N19/174 ,  H04N19/179

CPC分类号： H04N19/124 ,  H04N19/136 ,  H04N19/142 ,  H04N19/152 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/179 ,  H04N19/61

摘要： A quantization control method used in a video encoding which encodes a video image and performs control for making an encoding bit rate approach a predetermined target bit rate. The quantization control method includes measuring a differential amount of code between a target amount of code and an amount of generated code; determining whether or not a predetermined condition has occurred; determining, when it is determined that the condition has occurred, a variation for an amount of feedback which increases or decreases a quantization step size, and changing the amount of feedback based on the determined variation; and increasing or decreasing the quantization step size based on the measured differential amount of code and the changed amount of feedback. If there are a plurality of the predetermined conditions, a final variation for the amount of feedback may be determined by applying a specific operation to variations for the amount of feedback, which are determined for the individual conditions.

摘要翻译： 一种在视频编码中使用的量化控制方法，其对视频图像进行编码，并进行使编码比特率接近预定目标比特率的控制。 量化控制方法包括：测量目标代码量与生成代码量之间的差分代码量; 确定是否发生了预定条件; 确定当确定所述条件已经发生时，增加或减少量化步长的反馈量的变化，以及基于所确定的变化来改变反馈量; 以及基于所测量的差分代码量和改变的反馈量来增加或减少量化步长。 如果存在多个预定条件，则可以通过对针对各个条件确定的反馈量的变化应用特定操作来确定反馈量的最终变化。

公开(公告)号：US08548042B2

公开(公告)日：2013-10-01

申请号：US12994339

申请日：2009-06-03

申请人： Ryuichi Tanida ,  Atsushi Shimizu

发明人： Ryuichi Tanida ,  Atsushi Shimizu

IPC分类号： H04B1/66

CPC分类号： H04N19/146 ,  H04N19/149

摘要： A video bitrate control method and apparatus that control a generated bitrate of a picture to be encoded, based on an initial value of an allocation bitrate that is previously given to each picture are provided, wherein a difference between an allocation bitrate and an actually generated bitrate of a picture that has been encoded is obtained as an error bitrate, one of a maximum value and a minimum value of the allocation bitrate is selected for a plurality of subsequent pictures, as an allowable correction range, based on the sign of the error bitrate, the maximum value and the minimum value of the allocation bitrate being calculated based on the initial value of the allocation bitrate and a previously given constant, a difference between the allowable correction range and the allocation bitrate is obtained for the plurality of pictures, as an allowable variation bitrate, the ratio of the sum of allowable variation bitrates and the error bitrate is obtained as an update rate, a variation bitrate for the allocation bitrate is calculated for the plurality of pictures based on the allowable variation bitrate and the update rate, and the allocation bitrate of each of the plurality of pictures is updated based on the variation bitrate.

摘要翻译： 提供了一种视频比特率控制方法和装置，其基于预先给予每个图像的分配比特率的初始值来控制要编码的图像的生成比特率，其中分配比特率与实际产生的比特率之间的差异 获得已编码的图像作为误码率，基于误码率的符号，为多个后续图像选择分配比特率的最大值和最小值之一作为允许校正范围 ，基于分配比特率的初始值和预先给出的常数来计算分配比特率的最大值和最小值，对于多个图像获得可允许校正范围和分配比特率之间的差，作为 获得允许的变化比特率，获得允许的变化比特率和误差比特率的比率作为更新率，变量 基于允许的变化比特率和更新率，针对多个图像计算用于分配比特率的离子比特率，并且基于变化比特率来更新多个图像中的每一个的分配比特率。

公开(公告)号：US20110075728A1

公开(公告)日：2011-03-31

申请号：US12994339

申请日：2009-06-03

申请人： Ryuichi Tanida ,  Atsushi Shimizu

发明人： Ryuichi Tanida ,  Atsushi Shimizu

IPC分类号： H04N7/24

CPC分类号： H04N19/146 ,  H04N19/149

摘要： A video bitrate control method and apparatus that control a generated bitrate of a picture to be encoded, based on an initial value of an allocation bitrate that is previously given to each picture are provided, wherein a difference between an allocation bitrate and an actually generated bitrate of a picture that has been encoded is obtained as an error bitrate, one of a maximum value and a minimum value of the allocation bitrate is selected for a plurality of subsequent pictures, as an allowable correction range, based on the sign of the error bitrate, the maximum value and the minimum value of the allocation bitrate being calculated based on the initial value of the allocation bitrate and a previously given constant, a difference between the allowable correction range and the allocation bitrate is obtained for the plurality of pictures, as an allowable variation bitrate, the ratio of the sum of allowable variation bitrates and the error bitrate is obtained as an update rate, a variation bitrate for the allocation bitrate is calculated for the plurality of pictures based on the allowable variation bitrate and the update rate, and the allocation bitrate of each of the plurality of pictures is updated based on the variation bitrate.

摘要翻译： 提供了一种视频比特率控制方法和装置，其基于预先给予每个图像的分配比特率的初始值来控制要编码的图像的生成比特率，其中分配比特率与实际产生的比特率之间的差异 获得已编码的图像作为误码率，基于误码率的符号，为多个后续图像选择分配比特率的最大值和最小值之一作为允许校正范围 ，基于分配比特率的初始值和预先给出的常数来计算分配比特率的最大值和最小值，对于多个图像获得可允许校正范围和分配比特率之间的差，作为 获得允许的变化比特率，获得允许的变化比特率和误差比特率的比率作为更新率，变量 基于允许的变化比特率和更新率，针对多个图像计算用于分配比特率的离子比特率，并且基于变化比特率来更新多个图像中的每一个的分配比特率。

公开(公告)号：US20100118937A1

公开(公告)日：2010-05-13

申请号：US12529658

申请日：2008-03-05

申请人： Atsushi Shimizu ,  Ryuichi Tanida

发明人： Atsushi Shimizu ,  Ryuichi Tanida

IPC分类号： H04N7/26

CPC分类号： H04N19/124 ,  H04N19/115 ,  H04N19/147 ,  H04N19/149 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61

摘要： An encoding bit-rate control method used in video encoding in which intraframe prediction and interframe prediction are switchably used. The method includes measuring an amount of code generated for quantized information and an amount of code generated for non-quantized information for the picture which has been encoded; computing a ratio of the amount of code generated for the non-quantized information to the total amount of generated code, based on the above measured amounts of code; and determining a target amount of code of an encoding target picture by using the computed ratio of the amount of code generated for the non-quantized information. The target amount of code may be determined by computing a complex index for the quantized information of the picture which has been encoded, and estimating an amount of code generated when the encoding target picture is encoded using a predetermined assumed quantization step size, based on the above index and the ratio of the amount of code generated for the non-quantized information.

摘要翻译： 在可切换地使用帧内预测和帧间预测的视频编码中使用的编码比特率控制方法。 该方法包括测量为量化信息产生的代码量以及针对已编码的图像的非量化信息产生的代码量; 基于上述测量的代码量，计算针对非量化信息生成的代码量与生成代码总量的比率; 以及通过使用所计算的针对非量化信息生成的代码量的比率来确定编码目标图像的目标量的量。 可以通过计算已经编码的图像的量化信息的复数索引来确定目标量的代码，并且基于以下步骤来估计当使用预定的假定量化步长对编码目标图像进行编码时产生的代码量 以及为非量化信息生成的代码量的比率。

公开(公告)号：US09455739B2

公开(公告)日：2016-09-27

申请号：US12528434

申请日：2008-03-07

申请人： Ryuichi Tanida ,  Atsushi Shimizu

发明人： Ryuichi Tanida ,  Atsushi Shimizu

IPC分类号： H04N7/12 ,  H03M7/30 ,  H04N19/196 ,  H04N19/176 ,  H04N19/13 ,  H04N19/149 ,  H04N19/129 ,  H04N19/61 ,  H04N19/124 ,  H04N19/93

CPC分类号： H03M7/30 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/149 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/61 ,  H04N19/93

摘要： In a code amount estimating method, when encoding quantized values of coefficients of a larger-sized orthogonal transformation than an orthogonal transformation size assigned to a variable length encoding table, the quantized values are rearranged in a one-dimensional form, so as to obtain run-level sets. The number of groups is computed based on a proportion between an orthogonal transformation area corresponding to the orthogonal transformation size assigned to the variable length encoding table and an orthogonal transformation area for an encoding target. The Run-Level sets are classified into groups having the number of groups. Each Run is divided by the number of groups, and the obtained quotient is set as Run. A code length of each Run-Level set in each group is determined by referring to the variable length encoding table. The amount of generated code is estimated to be the total sum of the code lengths of all groups.

摘要翻译： 在码量估计方法中，当对分配给可变长度编码表的正交变换大小进行大尺寸正交变换的系数的量化值进行编码时，将量化值重新排列成一维形式，以获得运行 级集。 基于对应于分配给可变长度编码表的正交变换大小的正交变换区域与编码对象的正交变换区域之间的比例来计算组的数量。 运行级别集合分为具有组数的组。 每个运行除以组的数量，并将获得的商设置为运行。 通过参考可变长度编码表来确定每组中每个运行级别的代码长度。 生成的代码量估计为所有组的代码长度的总和。

公开(公告)号：US20100020872A1

公开(公告)日：2010-01-28

申请号：US12441665

申请日：2007-10-05

申请人： Atsushi Shimizu ,  Ryuichi Tanida

发明人： Atsushi Shimizu ,  Ryuichi Tanida

IPC分类号： H04N7/32

CPC分类号： H04N19/17 ,  H04N19/11 ,  H04N19/14 ,  H04N19/196 ,  H04N19/593

摘要： An intra prediction encoding control method used in intra prediction encoding having a plurality of prediction modes and prediction block sizes, wherein the prediction mode and the prediction block size each can be switched when encoding is performed. The method includes a step of computing a flatness degree index which indicates a degree of flatness of a target area for encoding; a step of determining a prediction block size used in intra prediction encoding of the target area, in accordance with the computed flatness degree index; and a step of selecting a prediction mode used in the intra prediction encoding of the target area, for the determined prediction block size.

摘要翻译： 一种在具有多个预测模式和预测块大小的帧内预测编码中使用的帧内预测编码控制方法，其中，当执行编码时，可以切换预测模式和预测块大小。 该方法包括计算表示用于编码的目标区域的平坦度的平坦度指数的步骤; 根据计算出的平坦度指数，确定在目标区域的帧内预测编码中使用的预测块大小的步骤; 以及对于所确定的预测块大小，选择在目标区域的帧内预测编码中使用的预测模式的步骤。

公开(公告)号：US20100014583A1

公开(公告)日：2010-01-21

申请号：US12528879

申请日：2008-03-05

申请人： Atsushi Shimizu ,  Ryuichi Tanida

发明人： Atsushi Shimizu ,  Ryuichi Tanida

IPC分类号： H04N7/26

CPC分类号： H04N19/124 ,  H04N19/136 ,  H04N19/142 ,  H04N19/152 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/179 ,  H04N19/61

摘要： A quantization control method used in a video encoding which encodes a video image and performs control for making an encoding bit rate approach a predetermined target bit rate. The quantization control method includes measuring a differential amount of code between a target amount of code and an amount of generated code; determining whether or not a predetermined condition has occurred; determining, when it is determined that the condition has occurred, a variation for an amount of feedback which increases or decreases a quantization step size, and changing the amount of feedback based on the determined variation; and increasing or decreasing the quantization step size based on the measured differential amount of code and the changed amount of feedback. If there are a plurality of the predetermined conditions, a final variation for the amount of feedback may be determined by applying a specific operation to variations for the amount of feedback, which are determined for the individual conditions.

摘要翻译： 一种在视频编码中使用的量化控制方法，其对视频图像进行编码，并进行使编码比特率接近预定目标比特率的控制。 量化控制方法包括：测量目标代码量与生成代码量之间的差分代码量; 确定是否发生了预定条件; 确定当确定所述条件已经发生时，增加或减少量化步长的反馈量的变化，以及基于所确定的变化来改变反馈量; 以及基于所测量的差分代码量和改变的反馈量来增加或减少量化步长。 如果存在多个预定条件，则可以通过对针对各个条件确定的反馈量的变化应用特定操作来确定反馈量的最终变化。

公开(公告)号：US08396130B2

公开(公告)日：2013-03-12

申请号：US12527374

申请日：2008-03-05

申请人： Atsushi Shimizu ,  Ryuichi Tanida

发明人： Atsushi Shimizu ,  Ryuichi Tanida

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/139 ,  H04N19/146 ,  H04N19/40 ,  H04N19/51 ,  H04N19/56 ,  H04N19/567 ,  H04N19/57 ,  H04N19/61

摘要： A motion vector search method used in video encoding which performs motion-compensated prediction. The method includes inputting a motion vector which has been searched for with respect to an encoding target block; computing a motion vector having a minimum overhead cost which minimizes the amount of code generated for the motion vector of the encoding target block; limiting a search area based on the input motion vector and the motion vector having the minimum overhead cost; and searching for a motion vector by searching only the limited search area. It is possible to compute a predicted vector of the encoding target block based on a motion vector of an already-encoded block in the vicinity of the target block, and determine the computed predicted vector to be the motion vector having the minimum overhead cost.

摘要翻译： 一种用于执行运动补偿预测的视频编码中的运动矢量搜索方法。 该方法包括输入已经针对编码目标块搜索的运动矢量; 计算具有最小开销成本的运动矢量，所述最小开销成本使针对编码目标块的运动矢量生成的代码量最小化; 基于输入运动矢量和具有最小开销成本的运动矢量来限制搜索区域; 并通过仅搜索有限搜索区域来搜索运动矢量。 可以基于目标块附近的已编码块的运动矢量来计算编码对象块的预测矢量，并且将计算出的预测矢量确定为具有最小开销成本的运动矢量。

公开(公告)号：US08265142B2

公开(公告)日：2012-09-11

申请号：US12529658

申请日：2008-03-05

申请人： Atsushi Shimizu ,  Ryuichi Tanida

发明人： Atsushi Shimizu ,  Ryuichi Tanida

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/124 ,  H04N19/115 ,  H04N19/147 ,  H04N19/149 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61

摘要： An encoding bit-rate control method used in video encoding in which intraframe prediction and interframe prediction are switchably used. The method includes measuring an amount of code generated for quantized information and an amount of code generated for non-quantized information for the picture which has been encoded; computing a ratio of the amount of code generated for the non-quantized information to the total amount of generated code, based on the above measured amounts of code; and determining a target amount of code of an encoding target picture by using the computed ratio of the amount of code generated for the non-quantized information. The target amount of code may be determined by computing a complex index for the quantized information of the picture which has been encoded, and estimating an amount of code generated when the encoding target picture is encoded using a predetermined assumed quantization step size, based on the above index and the ratio of the amount of code generated for the non-quantized information.

摘要翻译： 在可切换地使用帧内预测和帧间预测的视频编码中使用的编码比特率控制方法。 该方法包括测量为量化信息产生的代码量以及针对已编码的图像的非量化信息产生的代码量; 基于上述测量的代码量，计算针对非量化信息生成的代码量与生成代码总量的比率; 以及通过使用所计算的针对非量化信息生成的代码量的比率来确定编码目标图像的目标量的量。 可以通过计算已经编码的图像的量化信息的复数索引来确定目标量的代码，并且基于以下步骤来估计当使用预定的假定量化步长对编码目标图像进行编码时产生的代码量 以及为非量化信息生成的代码量的比率。

公开(公告)号：US20100111184A1

公开(公告)日：2010-05-06

申请号：US12527374

申请日：2008-03-05

申请人： Atsushi Shimizu ,  Ryuichi Tanida

发明人： Atsushi Shimizu ,  Ryuichi Tanida

IPC分类号： H04N7/32

CPC分类号： H04N19/139 ,  H04N19/146 ,  H04N19/40 ,  H04N19/51 ,  H04N19/56 ,  H04N19/567 ,  H04N19/57 ,  H04N19/61

摘要： A motion vector search method used in video encoding which performs motion-compensated prediction. The method includes inputting a motion vector which has been searched for with respect to an encoding target block; computing a motion vector having a minimum overhead cost which minimizes the amount of code generated for the motion vector of the encoding target block; limiting a search area based on the input motion vector and the motion vector having the minimum overhead cost; and searching for a motion vector by searching only the limited search area. It is possible to compute a predicted vector of the encoding target block based on a motion vector of an already-encoded block in the vicinity of the target block, and determine the computed predicted vector to be the motion vector having the minimum overhead cost.

摘要翻译： 一种用于执行运动补偿预测的视频编码中的运动矢量搜索方法。 该方法包括输入已经针对编码目标块搜索的运动矢量; 计算具有最小开销成本的运动矢量，所述最小开销成本使针对编码目标块的运动矢量生成的代码量最小化; 基于输入运动矢量和具有最小开销成本的运动矢量来限制搜索区域; 并通过仅搜索有限搜索区域来搜索运动矢量。 可以基于目标块附近的已编码块的运动矢量来计算编码对象块的预测矢量，并且将计算出的预测矢量确定为具有最小开销成本的运动矢量。